http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2008517870-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C30B11-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C30B29-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B13-0233 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B9-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B9-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C30B29-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F11-22 |
| filingDate | 2005-10-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2008-05-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2008517870-A |
| titleOfInvention | Method for purifying alkaline earths and alkali halides for crystal growth |
| abstract | An improved technique that reduces the likelihood of impurities being trapped and / or ensures the desired stoichiometric ratio of the growing crystal. Improved impurity removal is obtained by bubbling through a scavenge gas, such as fluorine gas or hydrogen fluoride gas, through an alkaline earth or alkali halide melt, and more volatile halides and melts. The purity of the melt is improved by removing the oxygen contained therein. By reacting the raw material after melting, any oxygen or metal impurities trapped in the raw material are free to react with the scavenger. The desired stoichiometric ratio is reached because the alkaline earth or alkali metal reacts with the halide in the scavenging gas. By reducing the amount of impurities in the melt and using the desired stoichiometric ratio of the melt, the radiation resistance and transmission properties of the resulting mass grown from this purified raw material are improved. In addition, this method can reduce the time required for degassing. This method can also be used to form a high purity pre-melt, which can be used to grow higher purity lumps. [Selection figure] None |
| priorityDate | 2004-10-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 121.