過酸化水素溶液によるSUS304鋼電解研磨面の不働態化処理

書誌事項

タイトル別名
  • Passivation Treatment of Electro-polished Type 304 Stainless Steel with H<sub>2</sub>O<sub>2</sub> Solutions
  • カサンカスイソ ヨウエキ ニ ヨル SUS304コウ デンカイ ケンマメン ノ フドウタイカ ショリ

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抄録

To develop a safe and environmentally friendly passivation treatment, the pitting resistance of Type 304 stainless steels, which were finished with different polishing methods and then passivated in H2O2 solutions under various conditions, were examined by measuring their pitting potentials in deaerated 3.5 %NaCl. Results show that pitting potentials were strongly dependent on the surface polishing conditions. A remarkable increase in pitting potential was attained on an electro-polished surface. The highest resistance to pitting was obtained on a surface treated in 3.5 %H2O2 at 25 °C for 2 h. The steels treated under this condition showed extremely high pitting potential of 1075 mV(vs. Ag/AgCl(sat. KCl)) in 3.5 %NaCl, but they showed no change in pitting potential after immersion in aerated 3.5 %NaCl for 100 d.

収録刊行物

  • 表面技術

    表面技術 65 (7), 330-337, 2014

    一般社団法人 表面技術協会

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