1999 Volume 48 Issue 3 Pages 117-122
Aluminides and silicides are receiving much attention as high-temperature structural materials having high oxidation resistance and consequently the oxidation resistance of these intermetallics has been investigated extensively. This review focuses on the oxidation behavior of Ni-aluminides, Ti-aluminides and Mo-silicides. The topics in Nialuminides are the time-depending change in the scale structure and the void formation at the scale/substrate interface. In Ti-aluminides, the modification of the scale structure by alloying additions and the effects of atmospheres on the oxidation behavior are described. The topic in Mo-suicides is the effects of defects and H2O vapor on the accelerated oxidation.