Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 2179-2184 |
| Number of pages | 6 |
| Journal | Science of Advanced Materials |
| Volume | 6 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2014 |
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Keywords
- 304 stainless steel
- Corrosion
- Electrochemical impedance spectroscopy
- Mechanical surface treatment
- Shot peening
ASJC Scopus subject areas
- Materials Science(all)
Cite this
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.
In: Science of Advanced Materials, Vol. 6, No. 10, 2014, p. 2179-2184.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Characterization of mechanical surface treated 304 stainless steel by electrochemical impedance spectroscopy
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.
AB - 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.
KW - 304 stainless steel
KW - Corrosion
KW - Electrochemical impedance spectroscopy
KW - Mechanical surface treatment
KW - Shot peening
UR - http://www.scopus.com/inward/record.url?scp=84913591516&partnerID=8YFLogxK
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U2 - 10.1166/sam.2014.2063
DO - 10.1166/sam.2014.2063
M3 - Article
VL - 6
SP - 2179
EP - 2184
JO - Science of Advanced Materials
JF - Science of Advanced Materials
SN - 1947-2935
IS - 10
ER -