摘要
Hydrogen adsorption and diffusion on the surface of austenitic stainless steel are studied with atom probe field ion microscope(AP-FIM).Hydrogen is noticeably adsorbed on the surface at low temperature(85K)and diffuses into the bulk to a depth of about 40 atom layers.The diffusion activation energy is calculated to be 0.22eV(or 21.2KJ/mol).It is also found that the microstructure of a specimen charged with hydrogen is changed,and the distribution of hydrogen fluctuates with the depth.
作者
REN Dagang
任大刚(Institute of Metal Research,Academia Sinica,Shenyang)
基金
Project supported by the National Science Foundstion of China.
