鉄鋼材料のさび形成前後の耐食性に及ぼすP添加の影響

DOI Web Site
  • 葉山 智絢
    東京理科大学創域理工学研究科先端化学専攻 国立研究開発法人物質・材料研究機構
  • 門脇 万里子
    国立研究開発法人物質・材料研究機構
  • 村瀬 義治
    国立研究開発法人物質・材料研究機構
  • 片山 英樹
    国立研究開発法人物質・材料研究機構
  • 原 徹
    国立研究開発法人物質・材料研究機構
  • 原 由佳
    国立研究開発法人物質・材料研究機構
  • 渡辺 日香里
    東京理科大学創域理工学研究科先端化学専攻
  • 四反田 功
    東京理科大学創域理工学研究科先端化学専攻
  • 板垣 昌幸
    東京理科大学創域理工学研究科先端化学専攻

書誌事項

タイトル別名
  • Effect of P Addition on the Corrosion Resistance of Steels Before and After Rust Formation

抄録

<p>This paper presents the effect of P addition on the corrosion resistance of steels before and after rust formation. Electrochemical measurements and surface analysis of P-containing steels (Fe-0.5 mass% P, Fe-1.0 mass% P, and Fe-1.5 mass% P) were conducted to analyze the contribution of P to their initial corrosion resistance before rust formation. The results showed that the initial corrosion resistance of the steel was worse with higher P content. According to the surface analysis conducted by SEM/EDS, more P-segregations at grain boundaries existed with higher P content. Based on the results of polarization measurements, it was considered that these P-segregation became the initiation sites of localized corrosion, resulting in the decrease in the initial corrosion resistance.</p><p>Although the initial corrosion resistance was worse with higher P content, the long-term corrosion resistance was better with higher P content. According to the results of atmospheric exposure tests at Miyakojima and the surface analysis of rust layers, P was incorporated into the rust layer, and it promoted the protective ability against corrosion.</p>

収録刊行物

  • 鉄と鋼

    鉄と鋼 110 (7), 548-557, 2024-05-01

    一般社団法人 日本鉄鋼協会

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