Title:
気相浸炭による炭化タングステンの製造方法
Document Type and Number:
Japanese Patent JP3963649
Kind Code:
B2
Abstract:
The invention relates to a method for producing wolfram carbides by gas-phase carburetion of wolfram powders and/or suitable wolfram precursor compounds in powder form at temperatures above 850° C. According to the method a CO2/CO mixture with a CO2 content greater than the Boudouard equilibrium content corresponding to the carburetion temperature is used as carburetion gas phase.
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Inventors:
Gilet, Gerhard
Grease, Benno
Brett Hauer, Jerck
Grease, Benno
Brett Hauer, Jerck
Application Number:
JP2000582326A
Publication Date:
August 22, 2007
Filing Date:
November 03, 1999
Export Citation:
Assignee:
H.C.Starck Gmbh
International Classes:
C01B32/949; B22F1/00; B22F9/22; C04B35/56; C22C29/08; C23C8/20
Other References:
F.C.Nava Alonso,Tungsten trioxide reduction-carburization with carbon monoxide-carbon-dioxide mixtures:Kinetics and thermodynamics,International journal of Mineral Processing,1987年,vol.20,p.137-151
Attorney, Agent or Firm:
Heikichi Odashima
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