http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1014383-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_77e850d09cbcd8b4325aa772088b817e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C4-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23C4-10 |
| filingDate | 1962-10-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3acf95b79b22aa7ff5f4212f89cb8dcf http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_58dedee4ced732e98c16a079db904e13 |
| publicationDate | 1965-12-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1014383-A |
| titleOfInvention | Hard metal deposits |
| abstract | A process for the production of a metal carbide coating of extreme hardness containing W2C (i.e. having a hardness of not less than 1700 Vickers Pyramid Number using a 50 gm load) comprises pre-heating a surface to be coated, e.g. a steel surface, and directing upon the pre-heated surface a product formed by rapidly heating powdered W, in elemental form or combined with C, together with sufficient carbonaceous material where necessary to produce a deposit in which between 1.3% and 4.5% by weight of C is combined with the W, the heating being carried out under nonoxidizing conditions in a plasma torch at temperatures in excess of 2400 DEG C. Beta W2C is formed during the process which is unstable and tends to revert to the alpha modification be a solid, e.g. naphthalene or powdered C, a liquid, e.g. benzene, toluene CCl4 or lubricating oil, or a gas, e.g. propane, butane or acetylene. Substances which increase the rate of reaction between the W and C may be employed, such as CH3Cl and CCl4. The coating material may contain a binding material. The surface prior to being sprayed may be heated by the plasma torch using a transferred arc, the coating be deposited using a non-transferred arc, and the surface of the coating then be heated using a transferred arc.ALSO:A process for the production of a metal carbide coating containing beta W2C comprises directing upon a pre-heated surface a product formed by rapidly heating powdered W, in elemental form or combined with C, together with sufficient carbonaceous material where necessary to produce a deposit in which between 1.3% and 4.5% by weight of C is combined with the W, the heating being carried out under non-oxidizing conditions in a plasma torch at temperatures in excess of 2,400 DEG C. The beta W2C formed during the process is unstable and tends to revert to the alpha modification on cooling. The carbonaceous material may be a solid, e.g. naphthalene or powdered C, a liquid, e.g. benzene, toluene, CCl4 or lubricating oil, or a gas, e.g. propane, butane or acetylene. Substances which increase the rate of reaction between the W and C may be employed such as CH3Cl and CCl4. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0324143-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CZ-303411-B6 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2575185-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5128146-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2822727-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0887432-A2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0887432-A3 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-3017907-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2276886-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2153392-A |
| priorityDate | 1962-10-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 35.