Specialized metallurgical processes – compositions for use therei – Compositions – Consolidated metal powder compositions
Patent
1998-07-22
1999-10-26
Mai, Ngoclan
Specialized metallurgical processes, compositions for use therei
Compositions
Consolidated metal powder compositions
419 3, 419 4, 419 28, 419 29, C22C 109
Patent
active
059720697
ABSTRACT:
A primary product comprising tungsten or molybdenum accommodated in a container 1 is heated at 500.degree. C. with 1000 atmospheric pressure in an Ar gas atmosphere and retained for 1 hour. According to the present invention, the crystal orientation in the (110) face can be 99% or more, and thus a material with a good electron radiation characteristic can be obtained.
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patent: 5145512 (1992-09-01), Spencer et al.
patent: 5440995 (1995-08-01), Levitt
patent: 5742891 (1998-04-01), Patrician et al.
Maekawa Shigeki
Takemoto Megumi
Mai Ngoclan
Mitsubishi Denki & Kabushiki Kaisha
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