Abstract
The corrosion characteristics of Al-Si-Mg alloy were investigated in <TEX>$O_2$</TEX> and <TEX>$H_2S/H_2$</TEX> environments at high temperature. The weight gain and the reaction rate constant of the Al-Si-Mg alloy were measured in the oxygen and hydrogen sulfide environments at 773K. The weight gain of Al-Si-Mg alloy was showed parabolic increase in the oxygen and hydrogen sulfide environments. The reaction rate constants were confirmed to be <TEX>$1.45{\times}10^{-4}mg^2cm^{-4}sec^{-2}$</TEX> in the oxygen environment and <TEX>$6.19{\times}10^{-4}mg^2cm^{-4}sec^{-2}$</TEX> in the hydrogen sulfide environment respectively. As a result of XPS analysis on the specimen surface, <TEX>$Al_2O_3$</TEX> and MgO compounds were detected in oxygen environment and <TEX>$Al_2(SO_4)_3$</TEX> sulfate was detected in the hydrogen sulfide environment. Corrosion rate of Al-Si-Mg alloy was about 4.3 times faster in hydrogen sulfide environment than oxygen environment.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
