Synthesis of New(W,Mo)(C,N) Powder by Heating W-Mo Alloy Powder in CH4+NH3 Mixed Gas of Normal-Pressure.

• Tanaka Kazuhiko

  Institute of Industrial Science, The University of Tokyo

• Hayashi Koji

  Institute of Industrial Science, The University of Tokyo

抄録

The authors had already succeeded in synthesizing the powders of new tungsten and molybdenum mono-carbonitrides, i.e., W(C, N) and Mo(C, N), by the following two processes: (1) high-pressure process: heating of W+C and Mo+C mixed powder in N₂ gas of 10-150 MPa at 1523-1773 K, and (2) normal-pressure process: heating of W and Mo powder in CH₄+NH₃ mixed gas of 0.1 MPa at 1373-1573 K. In this study, the synthesis of (W_0.3Mo_0.7) (C, N) was attempted by the latter normal-pressure process, i.e., by heating W-70at%Mo alloy+C mixed powder in NH₃ gas (method I) and by heating the alloy powder in CH₄+NH₃ mixed gas (method II). It was found that (W_0.3Mo_0.7) (C, N) with nitrogen contents of 23-21 at% could be synthesized by method II at 1373-1573 K. The maximum nitrogen content was fairly larger than 5 at% of W(C, N) and 17 at% of Mo(C, N) synthesized by method II, and also larger than 16-21 at% of (W_0.3Mo_0.7)(C, N) synthesized by the high-pressure process at 10-150 MPa.

収録刊行物

• 粉体および粉末冶金

  粉体および粉末冶金 47 (9), 946-950, 2000

  一般社団法人 粉体粉末冶金協会

キーワード

• (W,Mo)(C,N)
• tungsten-molybdenum alloy
• mono-carbonitrides
• synthesis
• ammonia
• methane
• hard substance

詳細情報

• CRID: 1390001206308135168
• NII論文ID: 10005138515
• NII書誌ID: AN00222724
• DOI: 10.2497/jjspm.47.946
• ISSN: 18809014
• ISSN: 05328799
• NDL書誌ID: 5485928
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5485928
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可