METHOD OF MANUFACTURING R-T-B BASED SINTERED MAGNET

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PROBLEM TO BE SOLVED : To provide a method of manufacturing an R-T-B based sintered magnet which can reduce occurrence of deposition between an R-T-B based sintered magnet and a support body, and also achieves an efficient supply of a heavy rare earth element RH from RH supply sources to R-T-B based sintered magnet bodies. SOLUTION : A vertical multi-stage arrangement of RH supply sources and R-T-B based sintered magnet bodies is obtained by respectively interposing a spacer having a specific shape therebetween. This achieves a considerable reduction of the occurrence of deposition between an R-T-B based sintered magnet and a support body than using a conventionally employed support body, such as a mesh. Additionally, a small contact area between the RH supply source and the R-T-B based sintered magnet body allows an efficient supply of a heavy rare earth element RH from the RH supply sources to the R-T-B based sintered magnet bodies, thereby improving a yield of the heavy rare earth element RH. COPYRIGHT : (C)2013, JPO&INPIT