GRAIN BOUNDARY DIFFUSION PROCESS JIG, AND CONTAINER FOR GRAIN BOUNDARY DIFFUSION PROCESS JIG

摘要

The present invention addresses the problem of providing a grain boundary diffusion process jig to which substrates (S) of R^L₂Fe₁₄B-based magnets, obtained by bonding a coating material (P) containing an element (R^H) (comprising at least one of dysprosium, terbium and holmium) to the surfaces of the substrates (S), do not readily fuse as a result of heat applied in a grain boundary diffusion process. A grain boundary diffusion process jig (10) has a large number of protrusions (12), the tips (121) of which have a ceramic surface, positioned on the surface of a tabular base (11) in such a manner that the tips (121) are in a single plane. By mounting substrates (S) on the protrusions (12), the contact area between the grain boundary diffusion process jig and a coating material bonded to the substrate surfaces is reduced, and by using a ceramic that does not easily react with the coating material (P), fusion between the substrates (S) and the grain boundary diffusion process jig (10) does not readily occur when heat is applied.