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Title:
GRAIN BOUNDARY DIFFUSION PROCESS JIG, AND CONTAINER FOR GRAIN BOUNDARY DIFFUSION PROCESS JIG
Document Type and Number:
WIPO Patent Application WO/2014/148354
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a grain boundary diffusion process jig to which substrates (S) of RL 2Fe14B-based magnets, obtained by bonding a coating material (P) containing an element (RH) (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.

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Inventors:
SAGAWA MASATO (JP)
TAKAGI SHINOBU (JP)
Application Number:
PCT/JP2014/056703
Publication Date:
September 25, 2014
Filing Date:
March 13, 2014
Export Citation:
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Assignee:
INTERMETALLICS CO LTD (JP)
DAIDO STEEL CO LTD (JP)
International Classes:
H01F41/02; B22F3/10; H01F1/057; H01F1/08
Domestic Patent References:
WO2013061836A12013-05-02
WO2011004867A12011-01-13
WO2011136223A12011-11-03
Foreign References:
JP2000210602A2000-08-02
JP2011233663A2011-11-17
JP2011204965A2011-10-13
JP2006249547A2006-09-21
Other References:
See also references of EP 2978000A4
Attorney, Agent or Firm:
Kyoto International Patent Law Office (JP)
Patent business corporation Kyoto international patent firm (JP)
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