抄録
The stainless steel is excellent on mechanical properties, workability and especially corrosion resistance. The corrosion resistance comes from the oxide film on the material surface. However, the oxide film may be damaged by a chloride ion. If the oxide film is damaged, a pitting corrosion occurs. Stress corrosion cracking and corrosion fatigue are initiated from the corrosion pit under loading. In this study, to evaluate the effect of stress on the corrosion resistance, the electrochemical property of austenitic stainless steel was measured under the constant tensile stress in corrosion environment. As the tensile stress increased, the spontaneous potential decreased. The pitting corrosion potential was confirmed to be constant around the potential difference of 0.1 V vs. Ag|AgCl.
