Corrosion behavior of the resistance sintered TiAl based intermetallics induced by two different molten salt mixture

摘要

The cyclic hot corrosion behaviors of TiAl based intermetallics were studied in two different molten salts consisting of % wt. Na2SO4-25NaCl and Na2SO4-25K(2)SO(4) at 800 and 900 degrees C for 180 h, respectively. The aim of the study is to elucidate the effect of alloying elements on hot corrosion phenomena in the corrosive molten salt mixture. Corrosion kinetics revealed the Mo-added samples exhibit poor corrosion resistance in both corrosive salt mixture. It has been found that the NaCl-containing salt mixture clearly influence the extent of degradation due to the self-sustaining reaction mechanism.