| 摘要 |
PCT No. PCT/JP92/00521 Sec. 371 Date Oct. 16, 1992 Sec. 102(e) Date Oct. 16, 1992 PCT Filed Apr. 27, 1992 PCT Pub. No. WO92/20081 PCT Pub. Date Nov. 12, 1992.A high-performance R-Fe-B permanent magnet being radially anisotropic can be produced by carrying out hot bending of a plateshaped magnet material produced by casting and hot working, to mold it into an arc shape; the cracks to be generated during the bending can be decreased by deciding such bending conditions as the amount of strain, the strain rate, the working temperature, as well as the structure and the composition of the alloy. Furthermore, by optimizing the conditions for heat-treatment and by using an oxidation resistance coating lubricant, an arc shape magnet of high performance and a low cost can be produced under stabilized conditions.
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