Difference between revisions of "Rare earth magnets"
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A general name for highly magnetic films made from rare earth elements. The strength of rare earth magnets exceeds those of ferrite magnets by approximately 10-fold. Additionally, they are lightweight, as thin as 0.06 inches, and are resistant to corrosion and demagnetization. Rare earth magnets are divided into two categories, that is, the SmCo-type (samarium-cobalt) rare earth magnets and the NdFeB-type (neodymium-iron-boron) magnets (also called Nd magnets). More than 98% of the rare earth magnets are the Nd magnets | A general name for highly magnetic films made from rare earth elements. The strength of rare earth magnets exceeds those of ferrite magnets by approximately 10-fold. Additionally, they are lightweight, as thin as 0.06 inches, and are resistant to corrosion and demagnetization. Rare earth magnets are divided into two categories, that is, the SmCo-type (samarium-cobalt) rare earth magnets and the NdFeB-type (neodymium-iron-boron) magnets (also called Nd magnets). More than 98% of the rare earth magnets are the Nd magnets | ||
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| + | == Risks == | ||
| + | * Rare earth magnets are extremely strong. Handle with caution as they can fly together and pinch fingers and art ([https://www.conservation-wiki.com/wiki/Magnet_Mounts AIC Wiki]). | ||
| + | * Rare earth magnets are brittle and subject to corrosion so they are usually plated or coated. | ||
==Resources and Citations== | ==Resources and Citations== | ||
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* T. Minowa, 'Rare earth magnets: Conservation of energy and the environment', ''Resource Geology'', Nov. 2008 at [https://onlinelibrary.wiley.com/doi/full/10.1111/j.1751-3928.2008.00073.x Wiley Online] | * T. Minowa, 'Rare earth magnets: Conservation of energy and the environment', ''Resource Geology'', Nov. 2008 at [https://onlinelibrary.wiley.com/doi/full/10.1111/j.1751-3928.2008.00073.x Wiley Online] | ||
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| + | * Wikipedia: [https://en.wikipedia.org/wiki/Rare-earth_magnet Website] (Accessed 11/2020) | ||
* Product Information: available from McMaster Carr in U.S. | * Product Information: available from McMaster Carr in U.S. | ||
Latest revision as of 10:40, 18 October 2022
Description
A general name for highly magnetic films made from rare earth elements. The strength of rare earth magnets exceeds those of ferrite magnets by approximately 10-fold. Additionally, they are lightweight, as thin as 0.06 inches, and are resistant to corrosion and demagnetization. Rare earth magnets are divided into two categories, that is, the SmCo-type (samarium-cobalt) rare earth magnets and the NdFeB-type (neodymium-iron-boron) magnets (also called Nd magnets). More than 98% of the rare earth magnets are the Nd magnets
Risks
- Rare earth magnets are extremely strong. Handle with caution as they can fly together and pinch fingers and art (AIC Wiki).
- Rare earth magnets are brittle and subject to corrosion so they are usually plated or coated.
Resources and Citations
- Gwen Spicer, 'Magnetic Mounting Systems for Museums and Cultural Institutions, Spicer Art Books, Delaware, USA (2019) Link
- T. Minowa, 'Rare earth magnets: Conservation of energy and the environment', Resource Geology, Nov. 2008 at Wiley Online
- Wikipedia: Website (Accessed 11/2020)
- Product Information: available from McMaster Carr in U.S.
- DISTLIST 18:27 Dec. 16 2004 from Neill McManus