| Predicate |
Object |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-5445
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-5436
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-6581
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-3217
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-3229
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-3227
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-3225
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-3843
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-3865
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-3847
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-96
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-656
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-6567
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-661 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-5831
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-645
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-64
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-622 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-5835
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-5831
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-622
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-645
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-64 |
| filingDate |
2020-06-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2022-05-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
2022-05-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CN-111635234-B |
| titleOfInvention |
Polycrystalline cubic boron nitride composite sheet and preparation method and application thereof |
| abstract |
The invention provides a polycrystalline cubic boron nitride composite sheet and a preparation method and application thereof, belonging to the technical field of superhard materials. The PCBN provided by the invention is prepared by sintering the following raw materials in parts by mass at high temperature and high pressure: 70-90 parts of CBN, 3-8 parts of nano alumina, 6-18 parts of tungsten-titanium solid solution and 1-4 parts of sintering aid; the sintering aid is aluminum nitride or rare earth oxide; the mass ratio of tungsten element to titanium element in the tungsten-titanium solid solution is 1: 1. The polycrystalline cubic boron nitride composite sheet provided by the invention has the characteristics of high strength and high hardness. |
| priorityDate |
2020-06-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |