Ti-Mo系焼結合金の腐食挙動について Corrosion Behavior of Ti-Mo Sintered Alloy

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The corrosion behavior of Ti-(0-40)mass%Mo alloys prepared through P/M technology was studied by corrosion test and electrochemical measurements. The corrosion rate of sintered Ti-Mo alloys in 35% HCl solution decreased remarkably with increasing molybdenum content. The corrosion rate of Ti-40mass%Mo alloy, for example, exhibited 5*10<SUP>-3</SUP> [mm/year], which was 10<SUP>4</SUP> times lower than that of pure titanium. On the other hand, the corrosion rate in 3%NaCl solution wasn't affected by molybdenum content in alloys and was less than 10<SUP>-3</SUP> [mm/Year].<BR>Potentiodynamic polarization curves in 35%HCl solution showed that increasing molybdenum content caused the open circuit potential (corrosion potential) to be noble and the anodic current density to be low. It was thought that the presence of spontaneously passivated film in which molybdenum was enriched by preferential dissolution of titanium suppressed the anodic reaction and improved their corrosion resistance. On the other hand, potentiodynamic polarization curves in 3%NaCl solution revealed that increasing molybdenum content caused the open circuit potential to be base and the anodic current density to be high because molybdenum dissolved actively.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 44(3), 241-246, 1997-03-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002013628
  • NII書誌ID(NCID)
    AN00222724
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    05328799
  • NDL 記事登録ID
    4172707
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-274
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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