JPS57171603A - Production of tungsten powder of good fluidity - Google Patents

Production of tungsten powder of good fluidity

Info

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
Application number
JP5650181A
Other languages
Japanese (ja)
Inventor
Hiroshi Yamamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Tungsten Co Ltd
Original Assignee
Nippon Tungsten Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Tungsten Co Ltd filed Critical Nippon Tungsten Co Ltd
Priority to JP5650181A priority Critical patent/JPS57171603A/en
Publication of JPS57171603A publication Critical patent/JPS57171603A/en
Pending legal-status Critical Current

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

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.
JP5650181A 1981-04-14 1981-04-14 Production of tungsten powder of good fluidity Pending JPS57171603A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (9)

* Cited by examiner, † Cited by third party
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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