フェロキシル試験によるステンレス鋼の耐銹性評価 Evaluation of Rust Resistance of Stainless Steels by Applying the Ferroxyl Test

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著者

    • 木谷 滋 KIYA Shigeru
    • 住友金属工業(株)総合技術研究所 Corp. Res. and Dev. Labs., Sumitomo Metal Industries, Ltd.

抄録

A method for evaluating the rust resistance of stainless steels by applying the ferroxyl test was investigated. Filter paper is moistened with test solution containing Fe(CN)<sub>6</sub><sup>3-</sup> and Cl<sup>-</sup> ions. The paper is then superimposed on a sample for 3 to 10 minutes. This induces pitting corrosion on the sample's surface. Iron ions generated by corrosion react with Fe(CN)<sub>6</sub><sup>3-</sup> ions to produce blue precipitates of prussian blue, Fe<sub>4</sub>[Fe(CN)<sub>6</sub>]<sub>3</sub>, which form blue spots on the filter paper. After the filter paper is rinsed and dried, rust resistance is evaluated based on the ratio of the total area of blue spots. The time required for this test is only 15 to 20 minutes and the method is very simple. It also has strong correlativity with the atmospheric exposure test on the evaluation of rust resistance of bright annealed ferritic stainless steels. It should also be noted, however that the method cannot predict the deterioration of rust resistance in every steel having a different surface film and roughness induced by atmospheric exposure. In conclusion, the method is most useful for quality control in a manufacturing process or the product inspection.

収録刊行物

  • 表面技術 = The Journal of the Surface Finishing Society of Japan  

    表面技術 = The Journal of the Surface Finishing Society of Japan 47(10), 873-879, 1996-10 

    The Surface Finishing Society of Japan

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各種コード

  • NII論文ID(NAID)
    10002257342
  • NII書誌ID(NCID)
    AN1005202X
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09151869
  • NDL 記事登録ID
    4057358
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-291
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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