Electrochemical Noise of SCC Inhibition of a Supermartensitic Stainless Steel in Sour Solution

In this work, the inhibition effect of a non-ionic gemini surfactant, named bis(2-((2-palmitoamidoethyl)amino)ethyl)1H-imidazole4,5-dicarboxylate, on stress corrosion cracking (SCC) behavior supermartensitic stainless steel (SMSS) was studied in sour environment. The slow strain rate tests (SSRT) results and fractographic analysis revealed that inhibitor able to inhibit SCC process using concentration above than 5ppm. At concentrations 0 5 ppm, showed brittle fracture with susceptibility SCC, whereas at 25 100 ductile, practically immune SCC. EN measurements transients associated pits microcracks, which were confirmed by SEM examination. shot noise theory indicated localized dominant SMSS susceptible