JPS57171603A - Production of tungsten powder of good fluidity - Google Patents
Production of tungsten powder of good fluidityInfo
- Publication number
- JPS57171603A JPS57171603A JP5650181A JP5650181A JPS57171603A JP S57171603 A JPS57171603 A JP S57171603A JP 5650181 A JP5650181 A JP 5650181A JP 5650181 A JP5650181 A JP 5650181A JP S57171603 A JPS57171603 A JP S57171603A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- good fluidity
- production
- dried
- tungsten powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
- B22F9/22—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Coating By Spraying Or Casting (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
PURPOSE:To produce W powder of good fluidity used as a melt spraying material by adding a compd. of Li to oxide of W then reducing, pickling, washing and drying the same. CONSTITUTION:An aq. lithium nitrate soln. is added to the tungsten blue oxide obtd. by decomposing ammonium paratungstate powder by heating at about 400-500 deg.C in gaseous H2 flow in such a way as to contain 0.02-0.5wt% Li2O basing on WO3, after which this is dried and is reduced at about 700-900 deg.C in H2, whereby W powder is obtained. This W powder is then washed for about 10min in about 2:3 dilute hydrochloric acid, and is further washed until the supernatant attains around 3pH, after which it is dried, whereby desired W powder is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5650181A JPS57171603A (en) | 1981-04-14 | 1981-04-14 | Production of tungsten powder of good fluidity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5650181A JPS57171603A (en) | 1981-04-14 | 1981-04-14 | Production of tungsten powder of good fluidity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57171603A true JPS57171603A (en) | 1982-10-22 |
Family
ID=13028849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5650181A Pending JPS57171603A (en) | 1981-04-14 | 1981-04-14 | Production of tungsten powder of good fluidity |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57171603A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6169907A (en) * | 1984-09-14 | 1986-04-10 | Nippon Tungsten Co Ltd | Production of pulverous tungsten powder |
| EP1440752A1 (en) | 2003-01-23 | 2004-07-28 | General Electric Company | Fabrication and utilization of metallic powder prepared without melting |
| CN100464902C (en) * | 2007-03-19 | 2009-03-04 | 江苏峰峰钨钼制品股份有限公司 | Method of eliminating potassium impurity from molybdenum powder |
| CN106180741A (en) * | 2016-07-15 | 2016-12-07 | 江苏峰峰钨钼制品股份有限公司 | A kind of preparation method of the tungsten rod that adulterates |
| US10100386B2 (en) | 2002-06-14 | 2018-10-16 | General Electric Company | Method for preparing a metallic article having an other additive constituent, without any melting |
| CN109834285A (en) * | 2019-03-08 | 2019-06-04 | 北京矿冶科技集团有限公司 | A kind of method of accurate control tungsten alloy powder doping component content |
| US10604452B2 (en) | 2004-11-12 | 2020-03-31 | General Electric Company | Article having a dispersion of ultrafine titanium boride particles in a titanium-base matrix |
-
1981
- 1981-04-14 JP JP5650181A patent/JPS57171603A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6169907A (en) * | 1984-09-14 | 1986-04-10 | Nippon Tungsten Co Ltd | Production of pulverous tungsten powder |
| JPH0239562B2 (en) * | 1984-09-14 | 1990-09-06 | Nippon Tungsten | |
| US10100386B2 (en) | 2002-06-14 | 2018-10-16 | General Electric Company | Method for preparing a metallic article having an other additive constituent, without any melting |
| EP1440752A1 (en) | 2003-01-23 | 2004-07-28 | General Electric Company | Fabrication and utilization of metallic powder prepared without melting |
| US6968990B2 (en) | 2003-01-23 | 2005-11-29 | General Electric Company | Fabrication and utilization of metallic powder prepared without melting |
| US10604452B2 (en) | 2004-11-12 | 2020-03-31 | General Electric Company | Article having a dispersion of ultrafine titanium boride particles in a titanium-base matrix |
| CN100464902C (en) * | 2007-03-19 | 2009-03-04 | 江苏峰峰钨钼制品股份有限公司 | Method of eliminating potassium impurity from molybdenum powder |
| CN106180741A (en) * | 2016-07-15 | 2016-12-07 | 江苏峰峰钨钼制品股份有限公司 | A kind of preparation method of the tungsten rod that adulterates |
| CN109834285A (en) * | 2019-03-08 | 2019-06-04 | 北京矿冶科技集团有限公司 | A kind of method of accurate control tungsten alloy powder doping component content |
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