材料期刊网

SURFACE SEGREGATION IN Mo-La ALLOY WIRE

HU Deqing ZHANG Zhaoxiang ZHAO Xingyu Peking University , Beijing , China ZHZNG Zhaoxiang , Dept.of Radio Electronics , Peking University , Beijing 100871 , China

金属学报(英文版)

The surface segregation in Mo-4wt-% La alloy wire has been studied by using Auger elec- tron spectroscopy.The process of the segregation is that the La atoms diffuse from the grain boundaries to surface.The experimental results were analysed by kinetics of grain boundary diffusion.The diffusion activation energy E_(?)=1.6 eV was obtained.

关键词: surface segregation , null , null , null