密着性に優れたダイヤモンド被覆工具による Al-18mass%Si合金の切削特性 Cutting Performance of Well-Adheded Diamond Coated Tools for Turning of Al-18mass%Si Alloys

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Coated cutting tools with CVD diamond film requires high adhesion strength between the diamond film and substrate. We studied the adhesion strength of diamond-coated WC-Co tools using Microwave Plasma CVD (MWPCVD) and an Al-18%Si alloy cutting test using diamond cutting tools.<br>Diamond was coated onto tools using an MWPCVD apparatus. The reaction gas was a mixture of methane and hydrogen. Substrate temperature was varied from 673K to 1173K by controlling the microwave output power and growth pressure.<br>SEM observation revealed that grain size grew with increasing substrate temperature. All deposits were clear diamond crystals. XRD showed that deposits were cubic diamond. Raman spectroscopy showed that deposits synthesized at a lower substrate temperature (673K) were of higher quality than those synthesized at a higher substrate temperature (1173K). A scratch adhesion strength test, from 673K to 873K showed that adhesion strength increased from 873K to 1173K, but it decreased with increasing substrate temperature. Deposition synthesized at 873K showed the best adhesion strength. In Al-18%Si alloy cutting test of using diamond-coated tools synthesized at 873K, diamond film did not peel after a 800m cutting test and the surface of Al-Si work pieces turned with diamond coating tools synthesized at 873K presented uniform roughness.<br>The cutting performance of Al-18%Si alloys using diamond-coated WC-Co tools was related to adhesion strength.

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 48(6), 653-657, 1997-06-01 

    The Surface Finishing Society of Japan

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各種コード

  • NII論文ID(NAID)
    10002259308
  • 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
    4237645
  • 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  NDL  J-STAGE 
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