http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-733111-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_188f5540ab4165e22f64b8e33657881e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B21-0763 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B21-076 |
| filingDate | 1953-06-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1955-07-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-733111-A |
| titleOfInvention | Improvements in or relating to the preparation of titanium nitride |
| abstract | Finely divided titanium nitride is prepared by forming a molten mixture of reduced titanium halide and an alkali metal, alkaline earth metal, or magnesium halide, introducing anhydrous ammonia into the molten mixture to react with the reduced halide and form a finely divided precipitate of titanium nitride and separating the precipitate from the metal salt. The reduced titanium halide is the di- or tri-halide. The reaction is effected at 600-850 DEG C. and the molten mixture may contain 5-50 per cent titanium halide and is agitated throughout while the ammonia as gas is introduced near the bottom of the vessel. An inert atmosphere of argon is maintained during the reaction. The titanium nitride of 0.01-0.1 m size is separated by settling, cooled and leached with dilute acid, e.g. 2 per cent hydrochloric, to remove adhering chlorides. The titanium halide, which may be fluoride or iodide, or particularly chloride or bromide may be prepared by reducing the tetrahalide with sodium or magnesium, or electrolytically. In examples the molten mixture of halides is prepared (1) by passing titanium tetrachloride vapour into molten sodium to form a mixture of sodium chloride, and titanium di- and tri-halides; or (2) by passing the vapour into molten sodium and adding strontium chloride to the resultant mixture. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3385668-A |
| priorityDate | 1952-06-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 37.