| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6cc95d8834fc116503e8fdffa4094da3 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B24B7-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B24D5-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B24D3-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B24B19-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B24B1-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B24B55-02 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B24B19-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B24B55-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B24B1-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B24D3-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B24D5-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B24B7-22 |
| filingDate |
1999-07-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c10bdbee9978f541a739f9fcb07a242b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_36e8db8769dc2541fd72b0a54b10fd2e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a0aa9c3f1b7577928c95cb7855f66afc
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e1a7a4213d0cc5644cc97526cb5d772d |
| publicationDate |
2000-05-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
GB-2343856-A |
| titleOfInvention |
Surface finishing covalent-ionic ceramics |
| abstract |
A method of surface finishing covalent-ionic ceramics comprises (a) repeatedly rubbing a finishing medium (35) against an exposed surface (36) of the ceramic (37), the medium (35) being constituted of an ionic bonded oxide having grains harder than the grains of the covalent-ionic bonded ceramic; (b) interrupting the rubbing at frequent intervals to dress the medium by a single point diamond tool; and (c) continuing the repeated rubbing and dressing interruptions of steps (a) and (b) until a surface roughness of about .04 micrometer Ra has been achieved on the ceramic (37) and the exposed surface (36) of the ceramic (37) retains an ionic residue of the finishing medium. The ceramic 37 may be silicon nitride and the surface so produced when in rubbing contact with another component, eg a cam, and in the presence of lubricating oil, produces a low friction surface by the interaction of ionic residues with additives in the oil. |
| priorityDate |
1998-07-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |