CORROSION BEHAVIOR OF 12CRMOV STEEL IN WASTE INCINERATION ENVIRONMENTS - HOT CORROSION BY MOLTEN CHLORIDES

The corrosion resistance of a 12CrMo V alloy in contact with a molten mixture of (52-48) mol.%PbCl2-KCl, similar to that found in waste inci neration plants, has been studied. The corrosion kinetics have been an alyzed using continuous-current electrochemical techniques and electro chemical impedance spectroscopy (EIS). Studies were performed to deter mine the influence that temperature and the presence of carbon in the salt have on the corrosion rate. Scanning electron microscopy (SEM) an d electron-probe microanalysis (EPMA) were used as additional analytic al techniques to analyze the corrosion products in order to elucidate the corrosion mechanism.