AIP法によりTi-6Al-4V基板上に形成したCr-N膜の構造および耐溶融Al性に与える成膜時の窒素圧の影響 The Effect of Nitrogen Pressure on Structure and Molten Aluminum Resistance of Arc-ion Plated Cr-N Coatings on Ti-6Al-4V

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A series of chromium nitride coatings with different nitrogen contents were deposited on Ti-6Al-4V substrate by the arc ion plating method using a Cr target and nitrogen as the reactive gas. At nitrogen pressures below 027Pa, the deposited coatings contained 20 to 27 at% nitrogen and mainly consisted of the Cr<sub>2</sub>N phase. Above this pressure, coatings contained more than 35 at% nitrogen and consisted of the CrN single phase. The dissolution rate of the Cr-N coating in pure molten aluminum was drastically decreased above a nitrogen content of about 35 at%, which corresponds to the transition point from Cr<sub>2</sub>N to CrN. In TEM observation, it was found that a thin (∼50nm) reactive layer confirmed to be as wruzite type AlN formed in the interface between the CrN and Al after Al immersion. It was concluded that this AlN acts as a protective layer for the molten aluminum. In heat cycle testing, formation of heat cracks was significantly suppressed when deposited on Ti-6Al-4V in comparison to deposition on conventional tool steel. This behavior agrees with the results of thermal stress calculations for both substrates.

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(4), 446-453, 1997-04-01

    The Surface Finishing Society of Japan

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各種コード

  • NII論文ID(NAID)
    10002258922
  • 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
    4184939
  • 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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