Claims
- 1. A bonded rare earth magnet composed mainly of a powder of a magnetic material containing at least 50 atom % of a iron, and a high molecular compound produced by reacting with an epoxy resin one or more of a polyhydric phenol having adjacent hydroxyls, a polyhydric phenolic carboxylic acid having adjacent hydroxyls, an ester of a polyhydric phenol and a polyhydric alcohol having adjacent hydroxyls, and a polycyclic and polyhydric phenol having adjacent hydroxyls, or composed mainly of said powder, said compound and a resin.
- 2. A magnet as set forth in claim 1, wherein said powder is of Nd.sub.2 Fe.sub.14 B, an alloy of SmFe.sub.12 or an alloy of Fe.sub.16 N.sub.2.
- 3. A bonded rare earth magnet made by molding a powder of a magnetic material containing at least 50 atoms % of iron with a binder of a redox resin as a reduction agent.
- 4. A bonded rare earth magnet made by molding a powder of a magnetic material containing at least 50 atom % of iron with a binder of a high molecular compound produced by curing a mixture of ascorbic acid, or a derivative thereof, and an epoxy resin.
- 5. A magnet as set forth in claim 3 or 4, wherein said powder is of Nd.sub.2 Fe.sub.14 B, an alloy of SmFe.sub.12 or an alloy of Fe.sub.16 N.sub.2.
- 6. A magnet as set forth in claim 2, wherein said alloy is of Nd.sub.2 Fe.sub.14 B containing another element, said element is selected from the group consisting of rare earth elements, Co, V, Al, Ga and V.
- 7. A magnet as set forth in claim 1, wherein said powder is of a compound obtained by adding at least one element selected from the group consisting of Al, Si, Ti, Co, V, Cr and Mo, to SmFe.sub.12 having the ThMn.sub.12 crystal structure.
- 8. A magnet as set forth in claim 1, wherein said powder is of Fe.sub.16 N.sub.2 consisting of needle crystals providing anisotropy.
- 9. A magnet as set forth in claim 5, wherein said alloy is of Nd.sub.2 Fe.sub.14 B containing another element, said element is selected from the group consisting of rare earth elements, Co, V, Al, Ga and N.
- 10. A magnet as set forth in claim 3 or 4, wherein said powder is of a compound obtained by adding at least one element selected from the group consisting of Al, Si, Ti, Co, V, Cr and Mo, to SmFe.sub.12 having the ThMn.sub.12 crystal structure.
- 11. A magnet as set forth in claim 3 or 4, wherein said powder is of Fe.sub.16 N.sub.2 consisting of needle crystals providing anisotropy.
Priority Claims (3)
Number |
Date |
Country |
Kind |
2-195958 |
Jul 1990 |
JPX |
|
2-213110 |
Aug 1990 |
JPX |
|
2-309199 |
Nov 1990 |
JPX |
|
Parent Case Info
This application is a continuation-in-part of Ser. No. 07/733,749 filed Jul. 24, 1991, abandoned.
US Referenced Citations (10)
Foreign Referenced Citations (2)
Number |
Date |
Country |
0320064 |
Dec 1988 |
EPX |
0197712 |
Jan 1990 |
EPX |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
733749 |
Jul 1991 |
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