http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104569130-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N1-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N27-626 |
| filingDate | 2014-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2018-12-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2018-12-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-104569130-B |
| titleOfInvention | The measuring method of content of niobium is aoxidized in steel |
| abstract | The invention discloses the measuring methods that content of niobium is aoxidized in a kind of steel, clean after steel sample is impregnated in water and hydrochloric acid, and ethyl alcohol rinses, and weighing obtains the quality of steel sample before being electrolysed after drying；Using steel sample as anode, as cathode, the mixed solution of potassium chloride and citric acid is electrolysed stainless steel as electrolyte；The electrolysis residue on steel sample is washed away, ethyl alcohol rinses, dry, the quality of steel sample after weighing is electrolysed；Hydrochloric acid, nitric acid and perchloric acid are added into electrolysis residue, heating for dissolving obtains the first test solution；Hydrochloric acid and tartaric acid are added into the first test solution, precipitating is obtained by filtration after boiling；Nitric acid is added into precipitating, perchloric acid is added and obtains the second test solution；Nitric acid is added to the second test solution and hydrofluoric acid dissolution obtains third test solution；It is 25mL or 50mL by third test solution constant volume；Using caesium as internal standard element, using the niobium oxide quality of ICP-MS measurement third test solution and the niobium oxide quality of blank solution；It is obtained aoxidizing content of niobium in steel according to formula. |
| priorityDate | 2014-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.