Improvement of the Corrosion Resistance of the Belt-ground Stainless Steels by Nitric Acid Treatment.

• KIYA Shigeru

  Naoetsu Works, Sumitomo Metal Industries, Ltd.

Bibliographic Information

Other Title

• 硝酸処理によるベルト研磨ステンレス鋼の耐食性改善
• ショウサン ショリ ニヨル ベルト ケンマ ステンレス コウ ノ タイショクセ

Abstract

The effects of immersion or electrolysis in nitric acid solutions on the corrosion resistance of stainless steels ground using an abrasive belt and polishing oil were studied by immersing plate specimens of SUS 430, SUS 430LX, and SUS 304 belt-ground using a sulfurized mineral oil in 5∼30mass % HNO₃ for 60min or by electrolyzing them in 10mass % HNO₃ for 8-16s at 50 or 60°C. Corrosion resistance of samples was evaluated by a modified ferroxyl test and salt spraying followed by drying and wetting (SDW) rusting tests. We found that immersion in 10-20mass % HNO₃ was more effective than that in 30mass % HNO₃ and that cathodic or alternating electrolysis was more effective than anodic electrolysis in improving corrosion resistance of samples. XPS showed that effective immersion and effective electrolysis in nitric acid solution decreased sulfur content in the surface film. Corrosion resistance is presumed improved by repassivation after dissolution of the original surface film containing sulfur in nitric acid solution.

Journal

• Journal of The Surface Finishing Society of Japan

  Journal of The Surface Finishing Society of Japan 49 (8), 881-886, 1998

  The Surface Finishing Society of Japan

Keywords

• Stainless Steel
• Corrosion Resistance
• Sulfurized Mineral Oil
• Belt-grinding
• Nitric Acid

Details

• CRID: 1390001204115222016
• NII Article ID: 10002110291
• NII Book ID: AN1005202X
• DOI: 10.4139/sfj.49.881
• ISSN: 18843409
• ISSN: 09151869
• NDL BIB ID: 4546112
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4546112
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed