高濃度硫酸中におけるステンレス鋼の腐食挙動に及ぼすNi量の影響

DOI Web Site Web Site 被引用文献1件 参考文献2件
  • 松橋 亮
    新日本製鐵株式会社中央研究本部ステンレス・チタン研究センター
  • 佐藤 栄次
    新日本製鐵株式会社中央研究本部ステンレス・チタン研究センター
  • 阿部 征三郎
    新日本製鐵株式会社中央研究本部八幡技術研究部
  • 安保 秀雄
    新日本製鐵株式会社中央研究本部ステンレス・チタン研究センター

書誌事項

タイトル別名
  • Effect of Ni Content on the Corrosion Behaviour of Stainless Steels in Highly Concentrated Sulfuric Acid
  • コウ ノウド リュウサンチュウ ニ オケル ステンレス コウ ノ フショク キ

この論文をさがす

抄録

The effect of Ni content and temperature on corrosion behaviour of stainless steels in highly concentrated sulfuric acid was studied by electrochemical methods. Corrosion rate of stainless steels in highly concentrated sulfuric acid decreased as Ni content increased in low temperature region less than 60°C. Inversely, the corrosion rate increased in proportional to the increase of Ni content in the high temperature region over 60°C. The main cause of the above phenomena was considered to be that the dissolution rate of stainless steels in the activepassive transition range was accelerated by the rapid increase of the frequency of potential oscillation in high temperature region. It was also clarified that the cathodic reaction of molecular sulfuric acid resulting in the formation of water (H2O) and elemental sulfur (S°), easily occured on passivated metal surface of Ni bearing stainless steels, and subsequently led to the corrosion potential to less-noble state by the dissolution of passivated film with the water, which accelerated the frequency of potential oscillation and increased corrosion rate of stainless steels with Ni content in high temperature region.

収録刊行物

被引用文献 (1)*注記

もっと見る

参考文献 (2)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ