Characterization of mechanical surface treated 304 stainless steel by electrochemical impedance spectroscopy

Teguh Dwi Widodo, Azizul Helmi Bin Sofian, Ryouji Suzuki, Youhei Hirohata, Kazuhiko Noda

研究成果: Article

抄録

The electrochemical behaviors of 304 stainless steel before and after mechanical surface treatment were investigated by electrochemical impedance spectroscopy (EIS) in 3.5 wt% NaCl solution. Prior to EIS measurements, potentiodynamic polarization was conducted to characterize the passive potential range and localized potential behaviors. The potentiodynamic polarization results demonstrated a localized corrosion potential shift towards a more noble direction and an expanded passive potential range after the shot peening process. The EIS results showed that the surface barrier of 304 stainless steel improved after the shot peening process. In addition, field emission scanning electron microscopy (FE-SEM) observations revealed grain refinement on the 304 stainless steel surface after the shot peening process. The observed improvement in localized corrosion resistance may be attributable to grain refinement of the 304 stainless steel surface.

元の言語English
ページ(範囲)2179-2184
ページ数6
ジャーナルScience of Advanced Materials
6
発行部数10
DOI
出版物ステータスPublished - 2014

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Stainless Steel
Electrochemical impedance spectroscopy
Shot peening
Stainless steel
Potentiodynamic polarization
Grain refinement
Field emission
Corrosion resistance
Surface treatment
Corrosion
Scanning electron microscopy

ASJC Scopus subject areas

  • Materials Science(all)

これを引用

Characterization of mechanical surface treated 304 stainless steel by electrochemical impedance spectroscopy. / Widodo, Teguh Dwi; Bin Sofian, Azizul Helmi; Suzuki, Ryouji; Hirohata, Youhei; Noda, Kazuhiko.

:: Science of Advanced Materials, 巻 6, 番号 10, 2014, p. 2179-2184.

研究成果: Article

Widodo, Teguh Dwi ; Bin Sofian, Azizul Helmi ; Suzuki, Ryouji ; Hirohata, Youhei ; Noda, Kazuhiko. / Characterization of mechanical surface treated 304 stainless steel by electrochemical impedance spectroscopy. :: Science of Advanced Materials. 2014 ; 巻 6, 番号 10. pp. 2179-2184.
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AU - Widodo, Teguh Dwi

AU - Bin Sofian, Azizul Helmi

AU - Suzuki, Ryouji

AU - Hirohata, Youhei

AU - Noda, Kazuhiko

PY - 2014

Y1 - 2014

N2 - The electrochemical behaviors of 304 stainless steel before and after mechanical surface treatment were investigated by electrochemical impedance spectroscopy (EIS) in 3.5 wt% NaCl solution. Prior to EIS measurements, potentiodynamic polarization was conducted to characterize the passive potential range and localized potential behaviors. The potentiodynamic polarization results demonstrated a localized corrosion potential shift towards a more noble direction and an expanded passive potential range after the shot peening process. The EIS results showed that the surface barrier of 304 stainless steel improved after the shot peening process. In addition, field emission scanning electron microscopy (FE-SEM) observations revealed grain refinement on the 304 stainless steel surface after the shot peening process. The observed improvement in localized corrosion resistance may be attributable to grain refinement of the 304 stainless steel surface.

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