http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102000816-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_cc4e13141d402ceb885f368dfa042348 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22F9-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22F1-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01F1-01 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01F1-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01F1-057 |
| filingDate | 2010-10-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2013-07-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_abd17f236b0d4960c82e6f992cf63146 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b548b7498571f3fc0568425610222a22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_15b6aa5868bc4b9a53c0b385238d0c5c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_78e77b949b27da350c0286fd1f1f85d7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1a98df06bb69fc5f13ea746d7a1529f1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3ce3cc11e2ef708d3a375bbb44db2690 |
| publicationDate | 2013-07-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102000816-B |
| titleOfInvention | Exchange coupling dual-phase nano composite permanent magnet particles and preparation method thereof |
| abstract | The invention discloses exchange coupling dual-phase nano composite NdFeB permanent magnet particles and a preparation method thereof. The nano composite rare-earth permanent magnet particles are formed by uniformly distributing soft magnetic nano particles on the surface of hard magnetic particles, wherein the soft magnetic nano particles are iron, cobalt or iron cobalt alloy nano particles and account for 3-20 percent by weight of the nano composite rare-earth permanent magnet particles, and the hard magnetic particles are NdFeB magnetic powder. In the invention, the nano composite permanent magnet powder is prepared by wrapping the iron, cobalt or iron cobalt alloy nano particles on the surfaces of the single-phase hard magnet particles NdFeB by using a coprecipitation method or microwave-assisted polyalcohol reduction method. The preparation method of the invention has simple process and relatively lower cost and is suitable for mass production, the permanent magnet powder obtained by the method disclosed in the invention can be prepared into high-performance nano composite permanent magnets after being sintered, bonded or densified subsequently; in addition, the invention can remarkably reduce the rare-earth content in a permanent magnet material, decrease the production cost and improve the magnetic performance of the prepared product. |
| priorityDate | 2010-10-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 48.