Title:
PRODUCTION OF METAL POWDER, AND METAL POWDER PRODUCED BY THE METHOD
Document Type and Number:
Japanese Patent JPH1180818
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To produce a powder of base metal or a powder of metal made of alloy thereof, having spherical shape and excellent in crystallinity, by atomizing a raw-material solution containing specific amounts of base metal salt to form it into droplets and conveying them into a heated reaction tube by the use of an inert carrier gas in which reducing gas content and flow velocity are specified, respectively. SOLUTION: A raw material solution, containing one or many kinds of base metal salts by (0.1 to 5) mol/l in total of metal ions, is formed into droplets by atomization. As the base metal salts, the nitrates, sulfates, chlorides, etc., of copper, nickel, cobalt, iron, etc., are used, and water, alcohol, acetone, etc., are used as a solvent. The droplets are conveyed into a heated reaction tube by means of an inert carrier gas containing 1 to 35% reducing gas and having (1 to 5) cm/sec flow velocity, by which a powder of base metal or a powder of its alloy is produced. As inert carrier gas, nitrogen, argon, helium, etc., are used, and hydrogen, ammonium, carbon monoxide, etc., are used as reducing gas.
Inventors:
KURUMA SEIRAI
SAKURAI OSAMU
SHINOZAKI KAZUO
MIZUTANI TADAYASU
SAKURAI OSAMU
SHINOZAKI KAZUO
MIZUTANI TADAYASU
Application Number:
JP25926297A
Publication Date:
March 26, 1999
Filing Date:
September 08, 1997
Export Citation:
Assignee:
SUMITOMO METAL MINING CO
International Classes:
B22F9/24; B22F9/30; H01B1/16; H01G4/12; (IPC1-7): B22F9/30; B22F9/24; H01B1/16; H01G4/12
Attorney, Agent or Firm:
Ueda Shozo