Al-Mg-Si系合金の粒界腐食に及ぼすCu含有量の影響 The effect of Cu content on susceptibility to intergranular corrosion of Al-Mg-Si alloy

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Electrochemical measurements showed the results as follows. Pitting potential of solution heat treated alloy increased with Cu content. After precipitation heat treatment at 200°C for 60 min and for 180 min, pitting potential of Cu containing alloys decreased to −720~−730 mV (vs. SCE), accompanying intergranular corrosion. Dissolution potential of Mg<sub>2</sub>Si compound was found to be −730 mV (vs. SCE), which agreed with the pitting potential of precipitation heat treated Al–Mg–Si–Cu alloys. Intergranular corrosion of Al–Mg–Si–Cu alloys was concluded to be caused by preferential dissolution of less noble Mg<sub>2</sub>Si phase at grain boundary.

収録刊行物

  • 軽金属

    軽金属 47(5), 285-291, 1997-05-30

    The Japan Institute of Light Metals

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各種コード

  • NII論文ID(NAID)
    10003795470
  • NII書誌ID(NCID)
    AN00069773
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    04515994
  • NDL 記事登録ID
    4217035
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-284
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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