材料期刊网

SURFACE REACTION OF Ni_3Al WITH WATER VAPOR OR OXYGEN

YX. Chen , X.J. Wan and W.X. Xu (Institute of Materials Sciences , Shanghai University , Shanghai 200072 , China)(Shanghai Iron and Steel Research Institute , Shanghai 200940 , China)

金属学报(英文版)

The kinetics of the surface reactions of single crystal Ni3Al and polycrystal line Ni3Al0.00052 wt% B with water vapor or oxygen was investigated using XPS. Both reactions initiate at less than 1.5×10-6 Pa.s exposure. The reaction of Ni3Al does not saturote with water vapor at 0.43 Pa.s; with oxygen at 8.4×10-2 Pa.s and the oxide formed is Al2O3. The kinetics of these reactions can be used to eaplain the different ductility behavior of Ni3Al-based alloys in various environment.

关键词: Ni_3Al , null , null , null