Title:
METHOD OF PRODUCING TUNGSTEN-COPPER COMPOSITE POWDER AND METHOD OF PRODUCING SINTERED ALLOY FOR HEAT- RADIATION USING THE SAME
Document Type and Number:
Japanese Patent JP3821730
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method of producing tungsten-copper composite powder for producing a tungsten-copper sintered alloy for a heat-radiation material, which has excellent sinterability without the addition of other components, and has excellent electrical and thermal conductivity.
SOLUTION: The production method includes: a stage where tungsten salt and copper salt dissolved into water, are thereafter subjected to spray drying, and are subsequently calcined to prepare compound oxide powder; a stage where tungsten salt is separately calcined to prepare tungsten oxide; a stage where the compound oxide powder of 20 to 75 wt.% and the tungsten oxide of 25 to 80 wt.% are mixed, and this mixture is subjected to ball milling to form ultra-fine tungsten-copper oxide powder; and a stage where the ultra-fine compound oxide powder is reduced.
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Inventors:
Kim Byung Kee
Hong Seong Hyun
Wu Yang Won
Hong Seong Hyun
Wu Yang Won
Application Number:
JP2002062161A
Publication Date:
September 13, 2006
Filing Date:
March 07, 2002
Export Citation:
Assignee:
Korea Institute of Machinery and Materials
International Classes:
B22F9/20; B22F1/00; B22F3/00; B22F9/22; C01G41/00; C22C1/04; C22C27/04; (IPC1-7): B22F9/20; C22C1/04; //C22C27/04
Domestic Patent References:
| JP10245603A | ||||
| JP2000294668A | ||||
| JP8120310A |
Attorney, Agent or Firm:
Omae Kaname
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