| Predicate |
Object |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B22F2003-248
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B22F2003-241
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B22F2003-242
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22C2202-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01F1-0577
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B22F2003-247 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C10-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01F41-0293
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01F1-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B22F3-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C10-52
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01F41-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01F1-053
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C21D6-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C24-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22C38-005
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C10-28 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C21D6-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22F3-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01F1-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23C10-52
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01F1-053
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C38-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01F41-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23C10-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C33-02 |
| filingDate |
2006-04-14^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2011-01-05^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
2011-01-05^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-4605396-B2 |
| titleOfInvention |
Method for producing rare earth permanent magnet material |
| abstract |
A method for preparing a rare earth permanent magnet material is characterized by comprising the steps of disposing a powder mixture on a surface of a sintered magnet body of R 1 -Fe-B composition wherein R 1 is at least one element selected from rare earth elements inclusive of Sc and Y, the powder mixture comprising a powder containing at least 0.5% by weight of M which is at least one element selected from Al, Cu, and Zn and having an average particle size equal to or less than 300 µm and a powder containing at least 30% by weight of a fluoride of R 2 which is at least one element selected from rare earth elements inclusive of Sc and Y and having an average particle size equal to or less than 100 µm, and heat treating the magnet body having the powder disposed on its surface at a temperature equal to or below the sintering temperature of the magnet body in vacuum or in an inert gas, for causing at least one of M and R 2 in the powder mixture to be absorbed in the magnet body. The invention provides an R-Fe-B sintered magnet with high performance and a minimized amount of Tb or Dy used. |
| priorityDate |
2006-04-14^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |