http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114029497-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4c0ed78c4d5c4951a22374d61ea1f178 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B22F9-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B82Y30-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B82Y40-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B82Y30-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22F9-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B82Y40-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22F1-054 |
| filingDate | 2021-11-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4fca5cb75337cf305a2bc8aa887d34ea http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1f71c30d5eebfd4790113e49fca6a1f8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_948d4755dfbd1a6382a42c643aa0784b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d6fc2f92f4ca2b172df79789b1be157d |
| publicationDate | 2022-02-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-114029497-A |
| titleOfInvention | Preparation of high-specific gravity tungsten nickel cobalt nano powder and alloy with uniform element distribution and small particle size |
| abstract | A preparation method of high specific gravity tungsten nickel cobalt nano powder and alloy with uniform element distribution and small particle size belongs to the technical field of shielding materials and powder metallurgy. The method comprises the following steps: dissolving tungsten trioxide, cobalt chloride and nickel chloride in deionized water, uniformly mixing and stirring, heating, stirring and evaporating to dryness, drying in an oven, grinding the dried agglomerates by using a mortar, and sieving to obtain precursor powder. And then, sending the precursor powder into an argon plasma torch through carrier gas hydrogen, collecting powder at each part after the reaction is finished, loading the powder into a stainless steel mold, performing cold press molding, and performing tube furnace sintering in hydrogen atmosphere to obtain the tungsten-nickel-cobalt heavy alloy block. The grain diameter of the tungsten-nickel-cobalt nano powder prepared by the invention is about 25nm, the relative density of the sintered tungsten-based heavy alloy is more than 99%, and the shielding test result shows that the linear absorption coefficient is 1.31 times of that of lead. |
| priorityDate | 2021-11-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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