超微粒炭化タングステン粉末および超微粒超硬合金の製造技術の開発

• 志垣 憲良

  東京タングステン(株)

書誌事項

タイトル別名

• Development of Production Technique for Ultrafine Tungsten Carbide and Ultrafine Grain Cemented Carbide.
• チョウ ビリュウ タンカ タングステン フンマツ オヨビ チョウ ビリュウ チ

抄録

Fine grain cemented carbide having high hardness and toughness is used in various kinds of precision procecing industries such as semiconductor, electronic device, machine work. In order to make clear grain growth mechanism of WC phase for fine grain cemented carbide, a lot of studies have been done. However, there have been a few studies on formtion mechanism of ultrafine WC powder. We succeeded in manufacturing of ultrafine WC powder by direct carburizing method (direct reaction of W oxide powder with C). Particle diameter of WC powder made by direct carburizing method is mainly determined by the nucleation generated by the reaction from WO_2.72 to WO₂. Direct carburizaing method is advantageous to the manufacturing of ultrafine WC powder, and cemented carbide made from ultrafine WC by direct carburizaing method has higher hardness, strength and toughness than conventional cemented carbide.

収録刊行物

• 粉体および粉末冶金

  粉体および粉末冶金 43 (4), 457-463, 1996

  一般社団法人 粉体粉末冶金協会

キーワード

• direct carburization
• ultrafine tungsten carbide
• fine grain cemented carbide

詳細情報

• CRID: 1390001206307768576
• NII論文ID: 10002011897
• NII書誌ID: AN00222724
• DOI: 10.2497/jjspm.43.457
• ISSN: 18809014
• ISSN: 05328799
• NDL書誌ID: 3954808
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3954808
• 本文言語コード: ja
• データソース種別:
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• 抄録ライセンスフラグ: 使用不可