Corrosion of Valve Steels in Combustion Gases of Diesel Engines under Thermal Shock Conditions
The corrosion behavior of four valve steels (X33CrNiMn23-8, X50CrMnNiNbN21-9, X53CrMnNiN20-8 and X55CrMnNiN20-8) in combustion gases of fuel oil, containing different bio-component concentrations of (5 and 10 wt. %) has been studied under thermal shock conditions. It has been found that the addition of bio-components to the fuel oil decreases the corrosion resistance of all steels under investigation, this effect being the stronger, the higher was the concentration of bio-component addition. It has been shown, that in spite of bio-component addition, the X33CrNiMn23-8 steel containing the highest chromium concentration, behaved much better than three remaining steels due to the formation of the highly protective chromia scale.
I. Bezverkhyy, S. Chevalier and O. Politano
Z. Grzesik et al., "Corrosion of Valve Steels in Combustion Gases of Diesel Engines under Thermal Shock Conditions", Defect and Diffusion Forum, Vols. 323-325, pp. 327-332, 2012