{"id":6277,"date":"2025-11-26T22:57:54","date_gmt":"2025-11-26T14:57:54","guid":{"rendered":"https:\/\/ct.semitanker.com\/?p=6277"},"modified":"2025-11-26T22:57:57","modified_gmt":"2025-11-26T14:57:57","slug":"what-is-a-permanent-magnet","status":"publish","type":"post","link":"https:\/\/ct.semitanker.com\/poland\/what-is-a-permanent-magnet\/","title":{"rendered":"Czym jest magnes trwa\u0142y"},"content":{"rendered":"<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/1.-What-is-a-Permanent-Magnet.webp\" alt=\"1. What is a Permanent Magnet\" class=\"wp-image-6278\" srcset=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/1.-What-is-a-Permanent-Magnet.webp 800w, https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/1.-What-is-a-Permanent-Magnet-600x450.webp 600w, https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/1.-What-is-a-Permanent-Magnet-768x576.webp 768w, https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/1.-What-is-a-Permanent-Magnet-16x12.webp 16w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Magnes trwa\u0142y to materia\u0142, kt\u00f3ry wytwarza w\u0142asne pole magnetyczne. Dzieje si\u0119 tak, poniewa\u017c znajduj\u0105ce si\u0119 w nim elektrony ustawiaj\u0105 si\u0119 w okre\u015blony spos\u00f3b.<\/strong> Na co dzie\u0144 korzystam z magnes\u00f3w trwa\u0142ych na wiele sposob\u00f3w. W niekt\u00f3rych metalach, takich jak \u017celazo, kobalt i nikiel, spiny oraz ruch elektron\u00f3w ulegaj\u0105 uporz\u0105dkowaniu. W ten spos\u00f3b powstaje silne i trwa\u0142e pole magnetyczne. Wyr\u00f3\u017cniam r\u00f3\u017cne rodzaje magnes\u00f3w, takie jak:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Stopowe magnesy trwa\u0142e (np. neodymowo-\u017celazowo-borowe, samarowo-kobaltowe i AlNiCo)<\/li>\n\n\n\n<li>Ferrytowe magnesy trwa\u0142e<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Magnesy te wspomagaj\u0105 dzia\u0142anie urz\u0105dze\u0144 w domach, samochodach i zak\u0142adach przemys\u0142owych. \ud83e\uddf2<\/p>\n\n\n\n\n\n<h2 class=\"wp-block-heading\" id=\"permanent-magnet-basics\">Podstawowe informacje o magnesach trwa\u0142ych<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"what-makes-a-magnet-permanent\">Co sprawia, \u017ce magnes jest trwa\u0142y<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Magnes trwa\u0142y zachowuje namagnesowanie, poniewa\u017c jego struktura atomowa utrwala silne pole magnetyczne.<\/strong> \ud83e\uddf2<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dzia\u0142anie magnes\u00f3w trwa\u0142ych wynika z zachowania ich atom\u00f3w i elektron\u00f3w. Elektrony w tych materia\u0142ach maj\u0105 niesparowane spiny. Spiny te s\u0105 skierowane w tym samym kierunku, co powoduje powstanie silnego i stabilnego pola magnetycznego. Spiny tworz\u0105 domeny magnetyczne. Gdy wi\u0119kszo\u015b\u0107 domen jest skierowana w t\u0119 sam\u0105 stron\u0119, magnes zachowuje swoje w\u0142a\u015bciwo\u015bci przez d\u0142ugi czas.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Najwa\u017cniejsze w\u0142a\u015bciwo\u015bci decyduj\u0105ce o trwa\u0142o\u015bci magnesu:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Remanencja: oznacza zdolno\u015b\u0107 magnesu do zachowania namagnesowania po zaniku zewn\u0119trznego pola magnetycznego.<\/li>\n\n\n\n<li>Koercja: okre\u015bla odporno\u015b\u0107 magnesu na odmagnesowanie. Wysoka koercja pozwala magnesowi zachowa\u0107 si\u0142\u0119 przez wiele lat.<\/li>\n\n\n\n<li>Anizotropia magnetokrystaliczna: pomaga zachowa\u0107 stabilno\u015b\u0107 magnesu i zapobiega \u0142atwej zmianie kierunku namagnesowania.<\/li>\n\n\n\n<li>Stabilno\u015b\u0107 termiczna: dobre magnesy trwa\u0142e trac\u0105 mniej ni\u017c 5% swojej si\u0142y przez wiele lat, nawet przy zmianach temperatury.<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Poni\u017csza tabela przedstawia te wa\u017cne w\u0142a\u015bciwo\u015bci:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>W\u0142a\u015bciwo\u015b\u0107<\/th><th>Opis<\/th><\/tr><tr><td>Indukcja magnetyczna (B)<\/td><td>Okre\u015bla, jaka cz\u0119\u015b\u0107 pola magnetycznego przenika przez magnes.<\/td><\/tr><tr><td>Nat\u0119\u017cenie pola magnetycznego (H)<\/td><td>Okre\u015bla nat\u0119\u017cenie pola wok\u00f3\u0142 magnesu.<\/td><\/tr><tr><td>Wektor namagnesowania (M)<\/td><td>Okre\u015bla kierunek i warto\u015b\u0107 namagnesowania wewn\u0105trz magnesu.<\/td><\/tr><tr><td>Koercja<\/td><td>Okre\u015bla odporno\u015b\u0107 magnesu na utrat\u0119 namagnesowania.<\/td><\/tr><tr><td>Anizotropia magnetokrystaliczna<\/td><td>Stabilizuje magnes poprzez utrzymywanie kierunku namagnesowania.<\/td><\/tr><tr><td>Stabilno\u015b\u0107 cieplna<\/td><td>Okre\u015bla, w jakim stopniu magnes zachowuje swoje w\u0142a\u015bciwo\u015bci magnetyczne w czasie i przy zmianach temperatury.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Podsumowuj\u0105c, materia\u0142 na magnes trwa\u0142y musi charakteryzowa\u0107 si\u0119 wysok\u0105 remanencj\u0105 i koercj\u0105.<\/strong> W\u0142a\u015bciwo\u015bci te wyst\u0119puj\u0105 w magnesach neodymowych, samarowo-kobaltowych i ferrytowych. Magnesy te zachowuj\u0105 swoje w\u0142a\u015bciwo\u015bci magnetyczne dzi\u0119ki uporz\u0105dkowaniu domen magnetycznych. Do utrzymania namagnesowania nie wymagaj\u0105 dzia\u0142ania si\u0142y zewn\u0119trznej. Dzi\u0119ki temu magnesy trwa\u0142e znajduj\u0105 zastosowanie w silnikach, elektronice i urz\u0105dzeniach medycznych. Oko\u0142o 30% wszystkich magnes\u00f3w stosowanych obecnie w przemy\u015ble stanowi\u0105 magnesy trwa\u0142e. Pokazuje to ich znaczenie we wsp\u00f3\u0142czesnej technice. \u26a1<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"how-permanent-magnets-work\">Jak dzia\u0142aj\u0105 magnesy trwa\u0142e<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"533\" src=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/3.-How-permanent-magnets-work.webp\" alt=\"3. How permanent magnets work\" class=\"wp-image-6279\" srcset=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/3.-How-permanent-magnets-work.webp 800w, https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/3.-How-permanent-magnets-work-600x400.webp 600w, https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/3.-How-permanent-magnets-work-768x512.webp 768w, https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/3.-How-permanent-magnets-work-18x12.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Magnesy trwa\u0142e wytwarzaj\u0105 pole magnetyczne dzi\u0119ki sposobowi, w jaki elektrony poruszaj\u0105 si\u0119 i ustawiaj\u0105 wewn\u0105trz materia\u0142u.<\/strong> \ud83e\uddf2<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Elektrony to bardzo ma\u0142e sk\u0142adniki atom\u00f3w. Wiruj\u0105 i poruszaj\u0105 si\u0119 wok\u00f3\u0142 \u015brodka ka\u017cdego atomu. W wi\u0119kszo\u015bci materia\u0142\u00f3w elektrony tworz\u0105 pary, a ich spiny wzajemnie si\u0119 znosz\u0105. W \u017celazie, kobalcie i niklu niekt\u00f3re elektrony pozostaj\u0105 niesparowane. Ich spiny s\u0105 skierowane w t\u0119 sam\u0105 stron\u0119, co wywo\u0142uje silny efekt magnetyczny.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Najwa\u017cniejsze etapy dzia\u0142ania magnes\u00f3w trwa\u0142ych:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Niesparowane elektrony w atomach maj\u0105 spiny skierowane w t\u0119 sam\u0105 stron\u0119.<\/li>\n\n\n\n<li>Spiny te wytwarzaj\u0105 niewielkie pola magnetyczne, nazywane orbitalnymi momentami magnetycznymi.<\/li>\n\n\n\n<li>Momenty te ustawiaj\u0105 si\u0119 zgodnie w grupach zwanych domenami magnetycznymi.<\/li>\n\n\n\n<li>Gdy wi\u0119kszo\u015b\u0107 domen jest skierowana w t\u0119 sam\u0105 stron\u0119, ca\u0142y magnes wytwarza silne i trwa\u0142e pole magnetyczne.<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Takie uporz\u0105dkowanie nie zachodzi przypadkowo. Materia\u0142 musi by\u0107 ferromagnetyczny \u2014 tylko wtedy domeny mog\u0105 zachowa\u0107 zgodne ustawienie. Pozostaj\u0105 uporz\u0105dkowane nawet po ustaniu oddzia\u0142ywania zewn\u0119trznego. Dzi\u0119ki temu magnesy trwa\u0142e zachowuj\u0105 swoje w\u0142a\u015bciwo\u015bci przez wiele lat.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Poni\u017csza prosta tabela przedstawia procesy zachodz\u0105ce wewn\u0105trz magnes\u00f3w trwa\u0142ych:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>Etap<\/th><th>Co zachodzi wewn\u0105trz magnesu<\/th><\/tr><tr><td>Spin elektronu<\/td><td>Niesparowane elektrony maj\u0105 spiny skierowane w t\u0119 sam\u0105 stron\u0119<\/td><\/tr><tr><td>Powstawanie domen magnetycznych<\/td><td>Grupy atom\u00f3w (domeny) ustawiaj\u0105 swoje momenty magnetyczne w jednym kierunku<\/td><\/tr><tr><td>Uporz\u0105dkowanie domen<\/td><td>Wi\u0119kszo\u015b\u0107 domen jest skierowana w t\u0119 sam\u0105 stron\u0119, dzi\u0119ki czemu magnes jest silny<\/td><\/tr><tr><td>Trwa\u0142e pole magnetyczne<\/td><td>Magnes zachowuje swoje pole bez oddzia\u0142ywania zewn\u0119trznego<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">U\u017cywam magnes\u00f3w trwa\u0142ych w wielu urz\u0105dzeniach. Nie trac\u0105 one \u0142atwo swoich w\u0142a\u015bciwo\u015bci magnetycznych. Oko\u0142o 30% wszystkich magnes\u00f3w stosowanych w przemy\u015ble stanowi\u0105 magnesy trwa\u0142e. Pokazuje to ich znaczenie w silnikach, czujnikach i elektronice. Ka\u017cdego dnia korzystam z ich stabilnego pola magnetycznego.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"magnet-materials\">Materia\u0142y magnetyczne<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"533\" src=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/4.-Magnet-Materials.webp\" alt=\"4. Magnet Materials\" class=\"wp-image-6280\" srcset=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/4.-Magnet-Materials.webp 800w, https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/4.-Magnet-Materials-600x400.webp 600w, https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/4.-Magnet-Materials-768x512.webp 768w, https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/4.-Magnet-Materials-18x12.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"advanced-materials-in-permanent-magnets\">Zaawansowane materia\u0142y na magnesy trwa\u0142e<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Najbardziej zaawansowanymi materia\u0142ami na magnesy trwa\u0142e s\u0105 stopy metali ziem rzadkich, takie jak neodym-\u017celazo-bor (NdFeB) i samar-kobalt.<\/strong> \ud83e\uddf2<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Materia\u0142y na magnesy trwa\u0142e z metali ziem rzadkich znacz\u0105co wp\u0142yn\u0119\u0142y na rozw\u00f3j technologii. Magnesy neodymowe wyr\u00f3\u017cniaj\u0105 si\u0119 najsilniejszymi w\u0142a\u015bciwo\u015bciami magnetycznymi. Stosuje si\u0119 je w silnikach samochod\u00f3w elektrycznych, turbinach wiatrowych i g\u0142o\u015bnikach. Magnesy samarowo-kobaltowe dobrze sprawdzaj\u0105 si\u0119 w wysokich temperaturach, na przyk\u0142ad w samolotach i maszynach wojskowych.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Poni\u017csza tabela przedstawia najcz\u0119\u015bciej stosowane materia\u0142y oraz udzia\u0142 ka\u017cdego z nich:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>Materia\u0142<\/th><th>Sk\u0142ad (obj\u0119to\u015bciowo)<\/th><th>Sk\u0142ad (masowo)<\/th><\/tr><tr><td>Neodym<\/td><td>12%<\/td><td>26.7%<\/td><\/tr><tr><td>\u017belazo<\/td><td>Nie dotyczy<\/td><td>Nie dotyczy<\/td><\/tr><tr><td>Bor<\/td><td>Nie dotyczy<\/td><td>Nie dotyczy<\/td><\/tr><tr><td>Samar<\/td><td>Nie dotyczy<\/td><td>Nie dotyczy<\/td><\/tr><tr><td>Kobalt<\/td><td>Nie dotyczy<\/td><td>Nie dotyczy<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Neodym i \u017celazo s\u0105 \u0142atwiej dost\u0119pne ni\u017c samar i kobalt. Dzi\u0119ki temu magnesy neodymowe s\u0105 ta\u0144sze i bardziej rozpowszechnione.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"material-properties-and-technological-impact\">W\u0142a\u015bciwo\u015bci materia\u0142\u00f3w i ich wp\u0142yw na rozw\u00f3j technologii<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Wyj\u0105tkowe w\u0142a\u015bciwo\u015bci trwa\u0142ych materia\u0142\u00f3w magnetycznych nap\u0119dzaj\u0105 innowacje w wielu bran\u017cach.<\/strong> \u26a1<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pierwiastki ziem rzadkich, takie jak neodym, oraz samar i kobalt umo\u017cliwiaj\u0105 wytwarzanie bardzo silnych magnes\u00f3w trwa\u0142ych. Magnesy neodymowo-\u017celazowo-borowe maj\u0105 najwi\u0119ksz\u0105 si\u0142\u0119 magnetyczn\u0105. Ma to du\u017ce znaczenie w samochodach elektrycznych i turbinach wiatrowych. Magnesy samarowo-kobaltowe zachowuj\u0105 silne w\u0142a\u015bciwo\u015bci magnetyczne nawet w bardzo wysokiej temperaturze, dlatego s\u0105 stosowane w samolotach i urz\u0105dzeniach wojskowych.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Najwa\u017cniejsze korzy\u015bci wynikaj\u0105ce z zastosowania zaawansowanych trwa\u0142ych materia\u0142\u00f3w magnetycznych:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Mo\u017cliwo\u015b\u0107 miniaturyzacji urz\u0105dze\u0144<\/li>\n\n\n\n<li>Wi\u0119ksza sprawno\u015b\u0107 silnik\u00f3w<\/li>\n\n\n\n<li>Lepsza jako\u015b\u0107 obrazowania medycznego<\/li>\n\n\n\n<li>Zachowanie silnych w\u0142a\u015bciwo\u015bci magnetycznych w trudnych warunkach<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Struktura atomowa pierwiastk\u00f3w ziem rzadkich zapewnia tym magnesom silne momenty magnetyczne i wysok\u0105 koercj\u0119. Dzi\u0119ki temu zachowuj\u0105 stabilno\u015b\u0107 i dobre parametry nawet w trudnych warunkach. Materia\u0142y te umo\u017cliwiaj\u0105 konstruowanie mniejszych i bardziej wydajnych urz\u0105dze\u0144. Oko\u0142o 30% wszystkich magnes\u00f3w stosowanych w przemy\u015ble stanowi\u0105 zaawansowane trwa\u0142e materia\u0142y magnetyczne. Pokazuje to ich znaczenie we wsp\u00f3\u0142czesnej technice.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"types-of-permanent-magnets\">Rodzaje magnes\u00f3w trwa\u0142ych<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"449\" src=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/5.-Types-of-permanent-magnets.webp\" alt=\"5. Types of permanent magnets\" class=\"wp-image-6281\" srcset=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/5.-Types-of-permanent-magnets.webp 800w, https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/5.-Types-of-permanent-magnets-600x337.webp 600w, https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/5.-Types-of-permanent-magnets-768x431.webp 768w, https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/5.-Types-of-permanent-magnets-18x10.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Istnieje pi\u0119\u0107 g\u0142\u00f3wnych rodzaj\u00f3w magnes\u00f3w trwa\u0142ych. Ka\u017cdy z nich jest wykonany z innych materia\u0142\u00f3w i ma odmienne zastosowania.<\/strong> \ud83e\uddf2<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Poni\u017cej przedstawiono kr\u00f3tkie zestawienie sk\u0142adu materia\u0142owego ka\u017cdego rodzaju:<\/strong><\/p>\n<\/blockquote>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>Rodzaj magnesu<\/th><th>Sk\u0142ad materia\u0142owy<\/th><\/tr><tr><td>Magnesy neodymowe (NdFeB)<\/td><td>Neodymium, Iron, Boron<\/td><\/tr><tr><td>Samarium Cobalt Magnets (SmCo)<\/td><td>Samarium, Cobalt<\/td><\/tr><tr><td>Magnesy Alnico<\/td><td>Aluminum, Nickel, Cobalt, Iron (plus copper, titanium)<\/td><\/tr><tr><td>Ferrite Magnets (Ceramic)<\/td><td>Iron oxide with barium or strontium<\/td><\/tr><tr><td>Flexible Rubber Magnets<\/td><td>Ferrite powder mixed with rubber or plastic binders<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"neodymium-magnets\">magnes\u00f3w neodymowych<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" href=\"https:\/\/ct.semitanker.com\/poland\/neodymium-magnets\/\" rel=\"noreferrer noopener\"><strong>magnes\u00f3w neodymowych<\/strong><\/a><strong> are the strongest and most used permanent magnets.<\/strong> \ud83d\udcaa<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">People use neodymium magnets because they are very powerful. They make magnetic fields much stronger than ferrite magnets. Their energy product is over 50 MGOe. This makes them important for new technology. You can find them in electric car motors and wind turbines. They are also in electronics, speakers, headphones, and medical machines. Even magnetic trains use them.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Key properties of neodymium magnets:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Very strong magnetic power<\/li>\n\n\n\n<li>Small size but powerful<\/li>\n\n\n\n<li>Some types work up to 230\u00b0C<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Common uses:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Electric and hybrid car motors<\/li>\n\n\n\n<li>Wind turbines<\/li>\n\n\n\n<li>Hard drives, phones, headphones<\/li>\n\n\n\n<li>MRI machines and other medical devices<\/li>\n\n\n\n<li>Magnetic gears, brakes, and sensors<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">At Osenc, I only work with neodymium magnets and their parts. I have many shapes and sizes, from tiny to very big. I also add special coatings for tough or medical places. This keeps them working well.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"samarium-cobalt-magnets\">Samarium cobalt magnets<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Samarium cobalt magnets work well in high heat and resist rust.<\/strong> \ud83d\udd25<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">I pick samarium cobalt magnets for very hot or tough places. They keep their strength up to 260\u00b0C (500\u00b0F). They do not lose much power when it gets hot or cold. I use them in planes, military tools, and hot factories.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Advantages of samarium cobalt magnets:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Resist rust very well<\/li>\n\n\n\n<li>Stay strong at high temperatures<\/li>\n\n\n\n<li>Tough and last long in hard places<\/li>\n<\/ol>\n<\/blockquote>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Common uses:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Airplane and defense tools<\/li>\n\n\n\n<li>Strong motors and generators<\/li>\n\n\n\n<li>Sensors and measuring tools<\/li>\n\n\n\n<li>Medical and science equipment<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Samarium cobalt magnets cost more than others. But they are worth it for important jobs.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"alnico-magnets\">Alnico magnets<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Alnico magnets make strong fields and handle heat well.<\/strong> \ud83c\udfb8<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">I use alnico magnets when I need them to work in heat or under stress. They have aluminum, nickel, cobalt, iron, and a little copper and titanium. They do not rust easily and keep their power in rough places.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Key properties of alnico magnets:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Work well in high heat<\/li>\n\n\n\n<li>Strong and tough<\/li>\n\n\n\n<li>Reliable in hard conditions<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Common uses:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Guitar pick-ups and microphones<\/li>\n\n\n\n<li>Plane sensors and navigation tools<\/li>\n\n\n\n<li>Motors and generators<\/li>\n\n\n\n<li>Medical and science devices<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Alnico magnets are still used in music, planes, and factories because they are strong and steady.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"ferrite-magnets\">Ferrite magnets<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ferrite magnets are cheap, do not rust, and are used every day.<\/strong> \ud83c\udfe0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">I pick ferrite magnets for things that do not need a lot of power. They are made from iron oxide and barium or strontium. They work up to 250\u00b0C and do not rust, even in water. They are cheap, so they are used in many products.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Key properties of ferrite magnets:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Do not rust easily<\/li>\n\n\n\n<li>Hard and keep their power<\/li>\n\n\n\n<li>Work up to 250\u00b0C<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Common uses:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Fridge magnets and whiteboards<\/li>\n\n\n\n<li>Speakers and small motors<\/li>\n\n\n\n<li>Car sensors and ABS brakes<\/li>\n\n\n\n<li>Magnetic separators and machines<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Ferrite magnets are used a lot in homes and cars because they are low-cost.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"flexible-rubber-magnets\">Flexible rubber magnets<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Flexible rubber magnets are bendy and easy to shape.<\/strong> \ud83e\uddf2\u2702\ufe0f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">I use flexible rubber magnets when I need them to bend or fit odd shapes. They are made by mixing ferrite powder with rubber or plastic. They are light, strong, and not expensive. I see them in crafts, toys, signs, and ads.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Key features of flexible rubber magnets:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Medium strength for close use<\/li>\n\n\n\n<li>Can bend and take hits<\/li>\n\n\n\n<li>Easy to cut or shape<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Typical applications:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Fridge seals and iceboxes<\/li>\n\n\n\n<li>Signs, labels, and displays<\/li>\n\n\n\n<li>Toys, games, and crafts<\/li>\n\n\n\n<li>Small motors and electronics<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Flexible rubber magnets are great for creative and factory uses where hard magnets will not work.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Podsumowanie:<\/strong><br>I see many types of permanent magnets in life and work. Each type is best for certain jobs. Neodymium magnets are the most powerful. Samarium cobalt magnets are best for hot or tough places. Alnico magnets work well in heat and stress. Ferrite magnets are cheap and used every day. Flexible rubber magnets are good for bending and shaping.<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"difference-between-electromagnets-permanent-magnets\">Difference Between Electromagnets &amp; Permanent Magnets<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"533\" src=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/6.-Difference-Between-Electromagnets-and-Permanent-Magnets.webp\" alt=\"6. Difference Between Electromagnets and Permanent Magnets\" class=\"wp-image-6282\" srcset=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/6.-Difference-Between-Electromagnets-and-Permanent-Magnets.webp 800w, https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/6.-Difference-Between-Electromagnets-and-Permanent-Magnets-600x400.webp 600w, https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/6.-Difference-Between-Electromagnets-and-Permanent-Magnets-768x512.webp 768w, https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/6.-Difference-Between-Electromagnets-and-Permanent-Magnets-18x12.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Electromagnets and permanent magnets are not the same.<\/strong> \ud83e\uddf2 They work in different ways and have their own uses. Electromagnets need electricity to make a magnetic field. Permanent magnets have a magnetic field all the time. I use both types for different jobs.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Electromagnets need electric current. Permanent magnets do not need power.<\/strong><\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Here is a table that shows the main differences:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>Cecha<\/th><th>Elektromagnesy<\/th><th>Magnesy trwa\u0142e<\/th><\/tr><tr><td>Magnetic Field Generation<\/td><td>Electric current creates the field<\/td><td>Magnetic field exists naturally<\/td><\/tr><tr><td>Power Requirement<\/td><td>Needs power to work<\/td><td>Works without power<\/td><\/tr><tr><td>Magnetic Field Control<\/td><td>Can turn on and off<\/td><td>Always active<\/td><\/tr><tr><td>Si\u0142a magnetyczna<\/td><td>Can change with current<\/td><td>Fixed strength<\/td><\/tr><tr><td>Cost and Availability<\/td><td>More expensive and complex<\/td><td>Easier to find and cheaper<\/td><\/tr><tr><td>Zastosowania<\/td><td>Used in electronics, manufacturing<\/td><td>Used in motors, generators, loudspeakers<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Electromagnets can be stronger than permanent magnets if I use enough current.<\/strong> I can change how strong they are. I can also turn them on or off. This is good for machines that need switching. I use electromagnets in cranes, MRI machines, and relays.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Permanent magnets always have a magnetic field.<\/strong> I use them in motors, generators, and speakers. They do not need power, so they save energy. About 30% of all magnets in industry are permanent magnets. I count on them for steady work.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Key points to remember:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Electromagnets need electricity; permanent magnets do not.<\/li>\n\n\n\n<li>I can switch electromagnets on and off.<\/li>\n\n\n\n<li>Permanent magnets work all the time.<\/li>\n\n\n\n<li>Electromagnets fit jobs that need control.<\/li>\n\n\n\n<li>Permanent magnets fit jobs that need steady power.<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">I pick the right type for each job. If I need to control the magnet, I use electromagnets. If I need a magnet that is always strong, I use permanent magnets. Both types help me make better machines and devices. \u26a1<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"applications-of-permanent-magnets\">Applications of permanent magnets<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/7.-Applications-of-permanent-magnets.webp\" alt=\"7. Applications of permanent magnets\" class=\"wp-image-6283\" srcset=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/7.-Applications-of-permanent-magnets.webp 800w, https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/7.-Applications-of-permanent-magnets-600x450.webp 600w, https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/7.-Applications-of-permanent-magnets-768x576.webp 768w, https:\/\/ct.semitanker.com\/wp-content\/uploads\/2025\/11\/7.-Applications-of-permanent-magnets-16x12.webp 16w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"household-and-everyday-uses\">Household and everyday uses<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Permanent magnets power many household items I use every day.<\/strong> \ud83c\udfe0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">These magnets are in things like kitchen tools, electronics, and toys. They help doors stay shut, save information, and make sounds. The market for these magnets in homes was $22.18 billion in 2023. It may grow to $39.71 billion by 2030. This shows they are very important in daily life.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Here is a table showing common household items and how magnets work inside them:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>Household Item<\/th><th>Funkcja<\/th><\/tr><tr><td>Refrigerators<\/td><td>A small magnet in the door keeps it closed tightly.<\/td><\/tr><tr><td>Hard Disk Drives<\/td><td>Three magnets help read\/write data and spin the disk.<\/td><\/tr><tr><td>Doorbells<\/td><td>Magnets interact with solenoids to make sound when pressed.<\/td><\/tr><tr><td>Microwave Ovens<\/td><td>Magnets in the magnetron create waves to heat food.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Magnets are also in speakers, headphones, and some toys. These uses of permanent magnets make my life easier and more dependable.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"industrial-and-automotive-applications\">Industrial and automotive applications<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Permanent magnets drive innovation in factories and vehicles.<\/strong> \ud83d\ude97\ud83c\udfed<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">I use these magnets in <a target=\"_blank\" href=\"https:\/\/ct.semitanker.com\/poland\/motor-and-permanent-magnet\/\" rel=\"noreferrer noopener\">motors<\/a>, sensors, and machines that work by themselves. They help machines work well and safely. In factories, magnets sort materials, lift heavy things, and power robots. In cars, they make driving safer and help cars use less energy.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>I see permanent magnets in:\n<ul class=\"wp-block-list\">\n<li>Motors for robots and machines<\/li>\n\n\n\n<li>Magnetic separators for sorting materials<\/li>\n\n\n\n<li>Lifting tools for heavy objects<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>In cars, I use magnets for:\n<ul class=\"wp-block-list\">\n<li>Anti-lock brakes (ABS)<\/li>\n\n\n\n<li>Electric car motors (neodymium magnets for better power)<\/li>\n\n\n\n<li>Fuel pumps, airbag parts, and steering sensors<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">These uses of permanent magnets help factories and cars save energy and work better. I often pick special coatings for magnets in tough places, like hot or wet spots. Osenc makes strong coatings and custom parts, so magnets last longer and work well in hard jobs.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"electronics-and-medical-devices\">Electronics and medical devices<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Permanent magnets play a key role in modern electronics and medical technology.<\/strong> \ud83d\udcbb\ud83e\ude7a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">I use magnets in computers, phones, and medical machines. They help store data, make sound, and power sensors. In medical tools, they help doctors find and treat problems safely.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>In electronics, I find magnets in:\n<ul class=\"wp-block-list\">\n<li>Hard drives and speakers<\/li>\n\n\n\n<li>Microphones and sensors<\/li>\n\n\n\n<li>Smartphones and tablets<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>In medical devices, I rely on:\n<ul class=\"wp-block-list\">\n<li>MRI machines (strong magnets for pictures inside the body)<\/li>\n\n\n\n<li>Magnetic drug targeting for careful treatment<\/li>\n\n\n\n<li>Cochlear implants and dental tools<\/li>\n\n\n\n<li>Magnetic tools for surgery<\/li>\n\n\n\n<li>Magnet-based health monitors you can wear<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">MRI machines use permanent magnets to make strong, even fields for pictures. Neodymium magnets have the highest energy product, so they are great for advanced medical tools. I often choose special coatings for magnets in medical devices to keep them safe and stop rust. Osenc gives these advanced choices for medical and electronic uses.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"advanced-engineering-and-research\">Advanced engineering and research<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Permanent magnets enable breakthroughs in engineering and scientific research.<\/strong> \ud83e\uddd1\u200d\ud83d\udd2c\u2699\ufe0f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">I use magnets in new projects, from new materials to high-tech machines. Research teams make new permanent magnets with advanced methods. They want to use less rare earth elements. For example, the VCU Permanent Magnet Research project looks at other metals like iron, cobalt, nickel, and manganese.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>Project<\/th><th>Opis<\/th><\/tr><tr><td>VCU Permanent Magnet Research<\/td><td>Developing new magnets with additive manufacturing to reduce rare earth use.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">I also use magnets in particle accelerators, maglev trains, and special sensors. These projects need magnets in special shapes, sizes, and coatings. Osenc helps engineers design, test, and make custom magnets for research and new technology.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Wskaz\u00f3wka:<\/strong> I always think about temperature, size, and tough conditions when picking magnets for special uses. Advanced coatings and custom solutions from Osenc help me meet strict needs in cars, medical tools, electronics, and research projects.<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A permanent magnet makes its own magnetic field and keeps it for years.<\/strong> There are five main types. These are neodymium, samarium cobalt, alnico, ferrite, and flexible rubber. These magnets help in daily life and in factories.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Permanent magnets are in home appliances and electronics.<\/li>\n\n\n\n<li>In hospitals, they are in MRI machines and hearing aids.<\/li>\n\n\n\n<li>In cars and planes, they power motors and sensors.<\/li>\n\n\n\n<li>In green energy, they help wind turbines and solar panels.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Neodymium magnets made devices smaller and stronger. I use rare earth permanent magnetic products for better electric cars, speakers, and wind turbines. Permanent magnets are everywhere. They help shape the world and industry today.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A permanent magnet is a material that keeps its magnetic field without needing power.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"faq\">Najcz\u0119\u015bciej zadawane pytania<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"what-is-the-strongest-type-of-permanent-magnet\">What is the strongest type of permanent magnet?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Neodymium magnets are the <\/strong><a target=\"_blank\" href=\"https:\/\/ct.semitanker.com\/poland\/how-strong-is-a-neodymium-magnet\/\" rel=\"noreferrer noopener\"><strong>strongest permanent magnets<\/strong><\/a><strong>.<\/strong> \ud83d\udcaa<br>I use these magnets in motors, electronics, and medical devices. Their energy product can go over 50 MGOe. This makes them about 30% stronger than other types.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"how-long-does-a-permanent-magnet-last\">How long does a permanent magnet last?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A permanent magnet can last for decades.<\/strong> \u23f3<br>Most magnets lose less than 5% of their strength over many years. If used the right way, they keep their power for more than 30 years.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"where-do-i-use-permanent-magnets-most-often\">Where do I use permanent magnets most often?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>I use permanent magnets in motors, sensors, and electronics.<\/strong><br>Here is a quick list:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Electric car motors \ud83d\ude97<\/li>\n\n\n\n<li>Speakers and headphones \ud83c\udfa7<\/li>\n\n\n\n<li>MRI machines \ud83e\ude7a<\/li>\n\n\n\n<li>Household appliances \ud83c\udfe0<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"can-permanent-magnets-lose-their-magnetism\">Can permanent magnets lose their magnetism?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Yes, permanent magnets can lose magnetism.<\/strong><br>Some things can make magnets weaker:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>High temperatures above their safe limit<\/li>\n\n\n\n<li>Strong magnetic fields that go the other way<\/li>\n\n\n\n<li>Physical damage<br>In normal use, they lose less than 5% of their power.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"what-coatings-protect-permanent-magnets\">What coatings protect permanent magnets?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>I use nickel, zinc, epoxy, PTFE, and gold coatings.<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>Pow\u0142oka<\/th><th>Use Case<\/th><\/tr><tr><td>Nikiel<\/td><td>General protection<\/td><\/tr><tr><td>PTFE<\/td><td>Corrosive environments<\/td><\/tr><tr><td>Z\u0142oto<\/td><td>Medical devices<\/td><\/tr><tr><td>Epoksyd<\/td><td>Elektronika<\/td><\/tr><\/tbody><\/table><\/figure>","protected":false},"excerpt":{"rendered":"<p>A permanent magnet is a material that makes its own magnetic field. This happens because the electrons inside it line up in a special way. I use permanent magnets every day in many ways. In some metals, like iron, cobalt, and nickel, the electrons spin and move in a way that lines up. This makes [&hellip;]<\/p>\n","protected":false},"author":14,"featured_media":6278,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[54],"tags":[],"class_list":["post-6277","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-magnet"],"_links":{"self":[{"href":"https:\/\/ct.semitanker.com\/poland\/wp-json\/wp\/v2\/posts\/6277","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ct.semitanker.com\/poland\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ct.semitanker.com\/poland\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ct.semitanker.com\/poland\/wp-json\/wp\/v2\/users\/14"}],"replies":[{"embeddable":true,"href":"https:\/\/ct.semitanker.com\/poland\/wp-json\/wp\/v2\/comments?post=6277"}],"version-history":[{"count":0,"href":"https:\/\/ct.semitanker.com\/poland\/wp-json\/wp\/v2\/posts\/6277\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ct.semitanker.com\/poland\/wp-json\/wp\/v2\/media\/6278"}],"wp:attachment":[{"href":"https:\/\/ct.semitanker.com\/poland\/wp-json\/wp\/v2\/media?parent=6277"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ct.semitanker.com\/poland\/wp-json\/wp\/v2\/categories?post=6277"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ct.semitanker.com\/poland\/wp-json\/wp\/v2\/tags?post=6277"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}