Synthesis of New Mo(C,N) Powder by Heating Mo Powder in CH4+NH3 Mixed Gas of Normal-Pressure (特集 硬質材料)
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概要
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New tungsten mono-carbonitride W(C, N) powder had already been found by the authors to be synthesized by the following two processes: (1) heating of W+C mixed powder in high-pressure N<SUB>2</SUB>gas of 10-160 MPa at 1523-1773 K and (2) heating of W powder in CH<SUB>4</SUB>+NH<SUB>3</SUB> mixed gas of normal-pressure at 1373-1573 K. In this study, the synthesis of Mo(C, N) was tried by the latter normal-pressure process, i.e., by heating Mo + C mixed powder in NH<SUB>3</SUB> gas (method I) and by heating Mo powder in CH<SUB>4</SUB>+NH<SUB>3</SUB> mixed gas (method II). It was found that Mo(C, N) with nitrogen content of 17 at% could be synthesized by method II, at 33-67 NH<SUB>3</SUB> vol% in the mixed gas. The nitrogen content was much larger than the 5 at% of W(C, N) by method II and it was within 14-25 at% which are the nitrogen contents of Mo(C, N) synthesized by the high-pressure-N<SUB>2</SUB> process.
- 社団法人 粉体粉末冶金協会の論文
- 2000-05-15
著者
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HAYASHI Koji
Institute of Industrial Science, The University of Tokyo
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TANAKA Kazuhiko
Institute of Industrial Science,The University of Tokyo
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Tanaka K
Institute Of Industrial Science The University Of Tokyo
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Tanaka Kazuhiko
Institute Of Industrial Science The University Of Tokyo
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Hayashi Koji
Institute Of Industrial Science
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