http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1265329-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2b8b744d430e252fa21c14c2b8dee176 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01J1-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01J9-047 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01J1-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01J9-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01J1-14 |
| filingDate | 1985-10-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1990-02-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_660db358d809e70573ad50ab15fc59b2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_671b627f13811a5019dd196845e7aad1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8f3e6ae80ed853f94646bf8650bb8331 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c0e7b4f9e215912cd84179795b77eeba |
| publicationDate | 1990-02-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1265329-A |
| titleOfInvention | Method of manufacturing a scandate dispenser cathode and dispenser cathode manufactured by means of the method |
| abstract | PHN11.170 10 5.5.1985 ABSTRACT: Method of manufacturing a scandate dispenser cathode and dispenser cathode manufactured by means of the method. A method of manufacturing a scandate dispenser cathode having a matrix at least the top layer of which at the surface consists substantially of tungsten (W) and scandium oxide (Sc2O3) and with emitter material in or below said matrix. If said method comprises the following steps: a) compressing a porous plug of tungsten powder; b) heating said plug in a non-reactive atmosphere and in contact with scandium to above the melting temperatu-re of scandium; c) cooling the plug in a hydrogen (H2) atmosphere; d) pulverizing the plug to fragments; e) heating said fragments to approximately 800°C and firing them at this temperature for a few to a few tens of minutes in a hydrogen atmosphere; f) grinding the fragments to scandium hydride-tungsten powder (ScH2/W); g) compressing a matrix or a top layer on a matrix of pure tungsten from said ScH2/W powder or from a mixture of this powder with tungsten powder; h) sintering and cooling the said matrix, 1) bringing emissive material in the cathode, a scandate dispenser cathode is obtained the recovery of which after ion bonbardment occurs better than in cathodes having Sc2O3. The scandium is also distributed more homo-geneously in the cathode than in cathodes having Sc2O3 grains. |
| priorityDate | 1984-10-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 32.