| Predicate |
Object |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-77
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-6581
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-9615
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-96
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-9669
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-6567
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-6562
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-6565
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-9684
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-5436
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-422
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-3839
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-3856
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-666
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-3852
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-3886 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-62655
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-6261
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-6264
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-622
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-5622
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-64
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-645
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-58035 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-64
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-622 |
| filingDate |
2020-02-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2021-07-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
2021-07-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CN-111072388-B |
| titleOfInvention |
Long-time ablation-resistant ultrahigh-melting-point nitrogen-containing carbide ultrahigh-temperature ceramic and application thereof |
| abstract |
The invention belongs to the technical field of carbide ceramics, and particularly relates to a nitrogen-containing carbide ultrahigh-temperature ceramic block and application thereof. The invention provides a method for preparing HfC with density more than or equal to 98% and uniform C/N content distribution by adopting ball milling and spark plasma sintering for the first time x N y A ceramic. The novel ultrahigh melting point ceramic designed and prepared by the invention overcomes the defects of too low ablation resistance temperature or too fast high-temperature ablation loss of the existing ultrahigh-temperature ablation-resistant ceramic; so that the utility model is suitable for the ablation-resistant protection at the ultra-high temperature of 3000 ℃ and above. The verification shows that the ceramic still keeps a state close to zero ablation rate and a continuous and stable anti-oxidation protective structure after the ceramic is ablated for a very long time (300 s). |
| priorityDate |
2019-11-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |