네오디뮴 자석 정보

네오디뮴 자석 정보

네오디뮴 자석은 시중에 판매되는 영구 자석 중 가장 강한 자석입니다., 세계 어느 곳에서나. 페라이트와 비교할 때 비교할 수 없는 수준의 자성과 감자 저항성을 제공합니다., 알니코 및 사마륨-코발트 자석.

네오디뮴 자석의 역사

네오디뮴 자석은 2009년에 처음 개발되었습니다. 1982 합금 NdFeB의 공식화에 따라 General Motors와 Sumitomo Special Metals에 의해, 네오디뮴과 철, 붕소로 만들어졌습니다.. 네오디뮴 자석은 사마륨-코발트 자석의 높은 가격에 대응하여 처음 생산되었습니다., 경제적인 것을 식별할 필요가 있음, 고성능 자석. 공동으로 만들어졌지만, General Motors와 Sumitomo Special Metals는 서로 다른 제조 공정을 따랐으며 General Motors는 분말 결합 형태의 네오디뮴 자석 생산을 선택한 반면 Sumitomo는 소결 제조 공정을 따랐습니다., 다양한 네오디뮴 자석을 제조하는 데 사용된 것과 동일한 공정.

희토류

네오디뮴 자석은 희토류 자석이라고도 합니다., 네오디뮴은 희토류 원소 계열의 일부이기 때문에. 희토류라는 용어는 희토류가 희소하다는 것을 의미하지 않습니다., 네오디뮴은 지각에 풍부합니다. 실제로 금과 같은 일부 귀금속보다 더 흔합니다. – 이 용어는 지구화학적 특성에서 유래되었습니다., 희토류 원소는 일반적으로 분산되어 있으며 경제적으로 활용 가능한 매장지에 집중되어 있는 경우는 많지 않습니다..

Neodymium is not the only element used to make neodymium magnets; neodymium is combined with boron and iron and sometimes other elements too to make super-strength magnets, just like those supplied by umagnets.com.

Neodymium Magnet Grades

It all starts with the letter ‘N’, all the names of neodymium magnets begin with ‘N’ for neodymium. The number that follows is a little more technical as this represents the maximum energy product of the magnet in ‘Mega-Gauss Oersteds’ (Mgoe). This is the primary indicator of a magnets ‘strength’. Simply, the higher the maximum energy product value, the greater the magnetic field the magnet will generate in a particular application.
The grades generally available to buy, range from N30 to N52 as lower grades are generally no longer manufactured.

네오디뮴 자석 – Platings/Coatings

Neodymium magnets are very hard, but very brittle. 을 더한, as neodymium magnets also contain iron it means they are prone to corrosion if they aren’t coated. They are so prone to corrosion that even the moisture in the atmosphere can cause an uncoated neodymium magnet to corrode over time. If a magnet corrodes it will weaken and crumble

That’s why, at umagnets.com we supply all our magnets already triple-coated (unless specifically requested otherwise). The typical coating for a neodymium magnet is a layer of nickel followed by a layer of copper and then nickel again. However there are many different coatings used with neodymium magnets including gold, rubber and Polytetrafluoroethylene (PTFE). The coating applied to a raw neodymium magnet depends on the application it will be used for, potential coatings include:

• 니켈-구리-니켈 (니쿠니)
• 고무
• 니켈 (~ 안에)
• 에폭시
• 아연 (아연)
• 금 (Au)
• 주석 (Sn)
• Titanium (Ti)
• Titanium Nitride (TiN)
• Parylene C
• Everlube
• Chrome
• Polytetrafluoroethylene (PTFE)
• 니켈-구리-니켈, plus Rubber
• 아연, plus Rubber
• 니켈-구리-니켈, plus Parylene
• 니켈-구리-니켈, plus PTFE
• 주석, plus Parylene
• Zinc chromate
• Phosphate passivation

During manufacture, all our magnets are thoroughly dried to prevent moisture being captured underneath the coating during the coating and plating process.

How does temperature affect neodymium magnets?

In the application of neodymium magnets, it is critical to understand the maximum operating temperature of each grade of magnet. Neodymium magnets operate best at lower temperatures, they even get stronger as the temperature gets colder, to a point of approximately -130°C. 하지만, some grades of neodymium magnets can also be exposed to very high temperatures before their properties begin to change and they lose their magnetism, either temporarily or permanently.

Uses of Neodymium Magnets

Neodymium magnets are the strongest magnets in the world. Because of their strength, even tiny magnets can be effective. This also makes them incredibly versatile; as each of us goes about our modern lives, we are never far from a neodymium magnet, you are likely to have one in your pocket right now, or if you are reading this article on smartphone, you might even have one in your hand!