http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DD-278253-A3
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b6afce59a5bcf28f992ad4092f2f612d |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23C16-02 |
| filingDate | 1988-03-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_874fecbf31404f4a937a1f1bc5191f16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0cabe5bae25d45067bf1bfcfec7186c9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1ff7d31c62a68a518363ec4cd8bbb667 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_80543b2232f3b39c170b407d0d12df23 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_52ccc513f047a6a3e4996da83c04bc45 |
| publicationDate | 1990-05-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DD-278253-A3 |
| titleOfInvention | PROCESS FOR PRE-TREATING SINTERHARD METAL BODIES FOR SURFACE COATING |
| abstract | The invention relates to a method for the pretreatment of Sinterhartmetallkoerpern for the surface coating with Verschleissschutzschichten of carbides, nitrides, borides and / or oxides of metals and / or non-metals by a chemical-physical method for producing a free of the sintering skin and other impurities surface with a fine Roughness and chemical surface activation. It is the object and the object of the invention to develop a method for the pretreatment of cemented carbide bodies for the subsequent surface coating, which enables an economic application in connection with the subsequent coating process and increases the adhesive strength of wear protection layers. This object is achieved in accordance with the invention in that the sintered hard metal bodies thoroughly purified of grease and dirt deposits are first reduced with hydrogen in a coating reactor at a temperature of between 1 170 and 1 370 K, and then within a period of 2 to 60 minutes under normal pressure or low pressure in one Gas mixture of 0.5 to 5 vol .-% titanium tetrachloride and 95 to 99.5 vol .-% hydrogen pretreated. |
| priorityDate | 1988-03-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 22.