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US 12,609,223 B2Granted
Bonded magnet and method of preparing the same
AssigneeNichia Corporation
InventorShuichi Tada
Life of this patent
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Abstract
The present invention provides a bonded magnet having good heat resistance. The present invention relates to a bonded magnet containing a SmFeN magnetic powder, nylon 12, and a hexafluoroisopropanol-unextractable component. The present invention also relates to a method of preparing a bonded magnet, including: bringing a raw material bonded magnet containing a SmFeN magnetic powder and nylon 12 into contact with an amorphizing agent; and heat-treating the raw material bonded magnet in contact with the amorphizing agent.
Claims5
A method of preparing a bonded magnet, comprising:
- melt-kneading a SmFeN magnetic powder and nylon 12 to prepare a compound containing the SmFeN magnetic powder and the nylon 12,
- molding the compound to prepare a raw material bonded magnet,
- bringing the raw material bonded magnet into contact with an amorphizing agent;
- and
- heat-treating the raw material bonded magnet in contact with the amorphizing agent.
2 more elements
Dependencies are inferred from the claim text.