| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_afbd28461590271382e45e5cbd1dce91
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_36121ef6e0689e9ac2d74f67c063d57d |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-96
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-94
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-80
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-5472
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-5436
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-5248
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-48
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-428
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-422
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B32B2315-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-405
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-77
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2237-365
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-728
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-3826
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-3821 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-62625
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-6261
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-62655
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F41H5-0435
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F41H5-0414
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-563
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-565
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-573 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-573
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-563
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F41H5-04 |
| filingDate |
2002-10-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9a29f1c30de227ebd16143cf8fec7db6 |
| publicationDate |
2003-10-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-03084872-A2 |
| titleOfInvention |
Toughness enhanced silicon-containing composite bodies, and methods for making same |
| abstract |
A silicon-containing composite body that would otherwise be brittle can be engineered to exhibit enhanced fracture toughness. Specifically, a silicon ceramic reinforced silicon carbide composite body is produced, preferably by a reactive infiltration technique. The ceramic is selected such that it has a higher coefficient of thermal expansion (CTE) than does the silicon phase. At least at some point during processing, the silicon phase is at temperature above its normal ductile/brittle transition temperature of about 500°C, and preferably above its melting point. The formed composite body containing the silicon phase is then cooled below its ductile/brittle transition. During cooking the ceramic phase shrinks more than does the silicon phase, thereby placing the latter in a state of compressive stress. By the time the composite body has cooled to substantially ambient temperature, the induced compressive stress in the silicon phase is sufficient as to impart a measurable degree of semi-ductile character to the silicon phase. This pseudo-ductility manifests itself in the composite body as a significant increase in the fracture toughness of the body. For example when the ceramic reinforcement of the carbide (which has a CTE similar to that of silicon), fracture toughness increased by almost 30 percent. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10139201-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10563961-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-102005060304-B4
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-102005060304-A1 |
| priorityDate |
2000-11-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |