http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DD-264990-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_44e0b0bb037fbe91c7bc0d6e1e7b5a1e |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N15-08 |
| filingDate | 1987-11-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_62fdf3a54e550034a4ab70941d91c39b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5dc3b666440c51f21b801d9548eff547 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f09c84b69d0d6907b606948076e1858d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_42280fbd163bbfd591cb3721819e4427 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_eae6738b41b3f0b326ce6ca2881e0027 |
| publicationDate | 1989-02-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DD-264990-A1 |
| titleOfInvention | METHOD FOR DETERMINING THE SURFACE OF METAL POWDER OF THE TANTALI AND ITS ALLOYS |
| abstract | The invention relates to a rapid oxidimetric method for determining the surface of metal powders of tantalum and its alloys and is used for their characterization or quality control, wherein instead of aufwiogen measurement of the adsorbed inert gas volume, the faster and more sensitive activation analytical determination of Oberflaechensauerstoffgehaltes occurs. The inventive method is characterized in that on the surface of the Ta powder under the action of atmospheric oxygen from a few atomic layers existing, adherent oxide film is produced to the Ta powder is heated to 320-330C for at least 60 min, after completion of the oxidation of Excess unbound oxygen is removed by inert gas flushing, a BET calibration measurement is carried out to determine the specific oxygen coverage, the surface oxygen content is determined by activation analysis and the true surface area of the powder is determined therefrom. |
| priorityDate | 1987-11-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 26.