| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7254628375f2c50b22dfce633d16dcad |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-48
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-5264
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-5244
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-5276
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-5296
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T428-292
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T428-2938
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-79
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-72
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-96 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-488
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-505
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-597
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-63444
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-117
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-584
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-62281
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-62884
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-62873
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-62844
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-62897
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-80 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-80 |
| filingDate |
1989-11-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1991-05-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_843758a36b14841ecbbb45d55787998e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1034c4874a9baca49b949cb3eef41608 |
| publicationDate |
1991-05-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-5017528-A |
| titleOfInvention |
Modified silicon carbide whiskers |
| abstract |
Silicon carbide whisker-reinforced ceramic composites are fabricated in a highly reproducible manner by beneficating the surfaces of the silicon carbide whiskers prior to their usage in the ceramic composites. The silicon carbide whiskers which contain considerable concentrations of surface oxides and other impurities which interact with the ceramic composite material to form a chemical bond are significantly reduced so that only a relatively weak chemical bond is formed between the whisker and the ceramic material. Thus, when the whiskers interact with a crack propagating into the composite the crack is diverted or deflected along the whisker-matrix interface due to the weak chemical bonding so as to deter the crack propagation through the composite. The depletion of the oxygen-containing compounds and other impurities on the whisker surfaces and near surface region is effected by heat treating the whiskers in a suitable oxygen sparaging atmosphere at elevated temperatures. Additionally, a sedimentation technique may be utilized to remove whiskers which suffer structural and physical anomalies which render them undesirable for use in the composite. Also, a layer of carbon may be provided on the surface of the whiskers to further inhibit chemical bonding of the whiskers to the ceramic composite material. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005143251-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5376600-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5275984-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6905992-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5123935-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9322258-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5567518-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005133963-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7485278-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5216813-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5449647-A |
| priorityDate |
1988-02-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |