| 摘要 |
PURPOSE:To improve magnetic properties, antioxidation, heat resistance, etc., of a cast permanent magnet by incorporating recrystalline composition containing R2Fe14B phase as a main phase in an R-Fe-B series cast permanent magnet. CONSTITUTION:An R-Fe-B series alloy cast containing as main ingredients rare earth element (R) including Y, Fe and B is formed. The composition of the cast is of recrystalline composition containing as a main phase R2Fe14B intermetallic compound phase 1 having a tetragonal structure including 0.05-50mum of mean recrystal particle size. Thus, the magnetic properties, antioxidation, heat resistance, etc., of the cast permanent magnet are improved. |
