TY - JOUR
T1 - Electrochemical impedance measurement of type 304 stainless steel under SSRT conditions
AU - Sunada, Satoshi
AU - Majima, Kazuhiko
AU - Matsumoto, Satoko
AU - Yamamoto, Takahisa
AU - Nunomura, Norio
PY - 2006/4
Y1 - 2006/4
N2 - SCC susceptibility of Type 304 stainless steel depends on NaCl concentration in aqueous solution composed of H 2SO 4 and NaCl. Immersion potential and electrode impedance were measured during SSRT(Slow Strain Rate Tensile) test in two kinds of solutions; i.e., one is 2.5 kmol·m -3 H 2SO 4 + 0.2 kmol·m -3 NaCl solution in which SCC occurs and the other is 2.5 kmol·m -3 H 2 SO 4 + 3.0 kmol·m -3 NaCl solution in which SCC does not occur. In case of non-SCC, the enhancement of cathodic reaction was observed during the measurement of corrosion potential in both solutions, while in case of SCC, the enhancement of anodic reaction was observed. In addition, R ct, C dl and τ0 slightly depend on the stress loaded on specimens in case of non-SCC, but they greatly depend on the stress loaded on specimens in case of SCC.
AB - SCC susceptibility of Type 304 stainless steel depends on NaCl concentration in aqueous solution composed of H 2SO 4 and NaCl. Immersion potential and electrode impedance were measured during SSRT(Slow Strain Rate Tensile) test in two kinds of solutions; i.e., one is 2.5 kmol·m -3 H 2SO 4 + 0.2 kmol·m -3 NaCl solution in which SCC occurs and the other is 2.5 kmol·m -3 H 2 SO 4 + 3.0 kmol·m -3 NaCl solution in which SCC does not occur. In case of non-SCC, the enhancement of cathodic reaction was observed during the measurement of corrosion potential in both solutions, while in case of SCC, the enhancement of anodic reaction was observed. In addition, R ct, C dl and τ0 slightly depend on the stress loaded on specimens in case of non-SCC, but they greatly depend on the stress loaded on specimens in case of SCC.
KW - Corrosion potential
KW - Electrochemical impedance spectroscopy
KW - Slow strain rate tensile
KW - Stress corrosion cracking
KW - Type 304 stainless steel
UR - http://www.scopus.com/inward/record.url?scp=33744987873&partnerID=8YFLogxK
U2 - 10.2320/jinstmet.70.389
DO - 10.2320/jinstmet.70.389
M3 - 学術論文
AN - SCOPUS:33744987873
SN - 0021-4876
VL - 70
SP - 389
EP - 394
JO - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
JF - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
IS - 4
ER -