TiN-Ti(C, N. )- 結合膜-α-AL_2O_3 膜被覆切削工具のマイクロ組織と切削特性 The Microstructure and Cutting performance of TiN-Ti(C, N. )- a Bounding Layer -α-AL_2O_3 Fillms Coated Cutting Tools

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We developed cemented carbide cutting tools coated with a layer of TiN, moderate temperature-Ti (C, N), bonding, and α-Al<sub>2</sub>O<sub>3</sub> by chemical vapor deposition (CVD). Tool life is about twice that of ordinary TiN-Ti (C, N) -TiC-κ-Al<sub>2</sub>O<sub>3</sub> coating in cutting tests on a cast metal FC 250 due to improved α-Al<sub>2</sub>O<sub>3</sub> layer adherence.<br>CVD coatings of cutting tools were studied using X-ray diffraction, SEM, EPMA, TEM, and TEM-EDX, with the following results:<br>(1) Bonding layer grains consisted of Ti, C, N, and O, or of Ti, C, and O.<br>(2) The crystal structure of the bonding layer phase was face-centered cubic with a lattice parameter of 0.431nm.<br>(3) Bonding layer grains grew epitaxially on moderate temperature-Ti (C, N) layer grains.<br>(4) No disorder of lattice fringes in interfaces between bonding layer grains and α-Al<sub>2</sub>O<sub>3</sub> layer grains was seen. (3) and (4) are considered to be the reason for improved tool life and α-Al<sub>2</sub>O<sub>3</sub> layer adherence.

収録刊行物

  • 表面技術 = The Journal of the Surface Finishing Society of Japan

    表面技術 = The Journal of the Surface Finishing Society of Japan 50(1), 47-51, 1999-01-01

    The Surface Finishing Society of Japan

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各種コード

  • NII論文ID(NAID)
    10002111560
  • NII書誌ID(NCID)
    AN1005202X
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09151869
  • NDL 記事登録ID
    973143
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-291
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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