http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108165791-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22C29-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22C1-051 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C1-05 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C29-08 |
| filingDate | 2017-12-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-01-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-01-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108165791-B |
| titleOfInvention | Preparation method of binderless superfine tungsten carbide hard alloy |
| abstract | The invention provides a preparation method of binderless superfine tungsten carbide hard alloy, which comprises the following steps: (1) pretreating the superfine tungsten carbide powder by adopting a pretreatment solution to prepare the superfine tungsten carbide powder containing a large number of crystal defects; (2) the binderless superfine tungsten carbide hard alloy is prepared by hot-pressing sintering or spark plasma sintering technology. The method adopts the pretreatment liquid to pretreat the superfine tungsten carbide powder, constructs a large number of crystal defects such as faults, dislocation and the like on the surface of the powder, and improves the surface defect energy of the superfine tungsten carbide powder, thereby reducing the sintering temperature of the superfine tungsten carbide powder, obviously improving the compactness of the binderless superfine tungsten carbide hard alloy, and having good mechanical property. |
| priorityDate | 2017-12-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 20.