| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4922854ecca6e0d97d8b5e61f459369e |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22C1-045
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B34-24 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C27-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C1-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22F1-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B34-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22F1-00 |
| filingDate |
1990-05-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b953113b041c3237f335923b1a0cbe8c |
| publicationDate |
1991-01-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
GB-2233349-A |
| titleOfInvention |
Powders and products of tantalum, niobium and their alloys |
| abstract |
Disclosed is a powder of tantalum, niobium, or an alloy thereof, having an oxygen content less than about 300 ppm and a powder metallurgy product formed therefrom. The production of the powder or body is effected without exposure to a temperature greater than about 0.7 TH. where TH is the homologous temperature of the metal. The process involves blending the metal powder with a metal (e.g. magnesium) having a higher affinity for oxygen than the powder in a vacuum chamber and heating to a temperature less than about 0.7 TH. The metal containing the oxygen is then removed by evaporation at low pressure and subsequently by selective leaching or dissolution of the powder. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2409466-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2409466-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-19831280-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2004042095-A1 |
| priorityDate |
1989-06-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |