摘要：Differents forms of localised etch appear on solution heat-treated austenitic stainless steel exposed to solutions of H2SO4 + NaCl according to the SO4/Cl ratio, under well-defined experimental conditions: presence of pre-formed cavities, application of constant load, polarization to a potential in the region of imperfect passivity.The forms of etch and the effect of the various parameters are discussed.
