| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of manufacturing a surface-modified R-Fe-B-based sintered magnet that has sufficient corrosion resistance even in an environment where humidity varies, and also has superior magnetic characteristics. <P>SOLUTION: The method of manufacturing the surface-modified R-Fe-B-based sintered magnet is characterized by carrying out a second process of performing a heat treatment at 200 to 600°C in an atmosphere of 1×10<SP>2</SP>to 1×10<SP>5</SP>Pa in oxygen partial pressure and 0.1 to 1,000 Pa (excluding 1,000 Pa) in water vapor partial pressure after carrying out a first process of forming an R-rich layer including ≥80 mass% of R on a surface of a magnet. <P>COPYRIGHT: (C)2011,JPO&INPIT |
