Improvement of Corrosion Resistance and Structural Change in 304 Stainless Steel by means of Ion-Mixing

Yasuyuki Masumoto; Mitsuhiro Takeda; Takanori Suda; Seiichi Watanabe; Soumei Ohnuki; Toshiaki Ohtsuka; Kazuhiro Ikezawa

doi:10.2320/matertrans.43.638

Yasuyuki Masumoto, Mitsuhiro Takeda, Takanori Suda, Seiichi Watanabe, Soumei Ohnuki, Toshiaki Ohtsuka, Kazuhiro Ikezawa

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Keywords: ion-beam mixing, surface modification, austenitic stainless steel, corrosion resistance

JOURNAL FREE ACCESS

2002 Volume 43 Issue 4 Pages 638-640

DOI https://doi.org/10.2320/matertrans.43.638

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Abstract

High-energy ion-beam mixing technique was applied for the surface modification of austenitic stainless steel, followed by electrochemical characterization and microstructural observation. The co-mixing of silicon and chromium resisted the passivation current to 1/1000 relative to the un-modified condition. The corrosion resistance improved remarkably. Microstructural observation revealed that the enhanced diffusion and induced amorphous structure introduced by the co-mixing of silicon and chromium, which played a very important role in the improvement of electrochemical behavior at surface.

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