http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9528364-A3
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7399cee5ccce75f206e49b8fb973db58 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_21976c8e40cc58526551150baf697e59 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a2bcaf91101a370a3d64e3190366357f |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61F2310-00203 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61L27-105 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-111 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61F2-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-111 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K6-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61L27-10 |
| filingDate | 1995-04-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a8cead1814e8ca16eb5860ed9e81c868 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_04f215a95504c9b95b4f731655464cf4 |
| publicationDate | 1995-11-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | WO-9528364-A3 |
| titleOfInvention | Al2o3 sintering material, process for the production of said material and use thereof |
| abstract | The invention relates to ceramics and concerns Al2O3 sintering materials made from corundum powder, a process for the production of the said materials and their use as, for example, human implants or as a material for tools. According to the invention, high-grade, low-defect Al2O3 sintering materials with very high degrees of hardness or high degrees of hardness and strength are produced containing 95-100 vol.% Al2O3 and a Vickers micro hardness of » 2000 at a test load of 10-100 N; these sintering materials have a relative sinter density δ » 98.5 %, grain structure with a mean grain size of « 1.5 νm and inhomogeneities which occur with a frequency of < 50 x 10+9 m-2. According to the invention, Al¿2?O3 sintering materials are also produced containing 95-100 vol.% Al2O3 and a Vickers micro hardness of » 1750 at a test load of 10-100 N and a bending strength of » 800 MPa, with a relative sinter density δ » 98.5 %, grain structure with a mean grain size of « 2 νm and defect density of < 30 x 10?-3¿. In order to produce Al¿2?O3 sintering materials of this kind from corundum powder, α-Al2O3 powder with defined characteristics is used in at least two different dispersion processes to produce an initially unsintered preliminary product with a relative density δ » 55 % which then undergoes heat treatment and sintering. |
| priorityDate | 1994-04-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 26.