http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109852861-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-25 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C32-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22F9-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22F3-105 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C1-05 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C27-04 |
| filingDate | 2019-02-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-07-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-07-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109852861-B |
| titleOfInvention | Low-temperature rapid preparation method of high-density nanocrystalline tungsten-copper-based bulk composite material |
| abstract | A low-temperature rapid preparation method of a high-density nanocrystalline tungsten-copper-based bulk composite material belongs to the technical field of refractory metals and powder metallurgy. The method is characterized in that raw materials of tungsten powder, zirconium carbide, chromium and copper are subjected to ball milling, the combined action of grain boundary element segregation and nano dispersion particles is utilized, and a discharge plasma rapid sintering method is combined to realize rapid solid phase sintering densification under the conditions of low temperature and high pressure, so that a series of tungsten-copper-based block composite materials with the density of more than 95% and the average grain size of less than 100 nanometers and adjustable Cu content are successfully prepared. The invention solves the contradiction between material compactness and grain size growth in the sintering process existing in the field of refractory metals and non-ferrous alloys for many years. |
| priorityDate | 2019-02-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 33.