Diffusion in the aged aluminium film on iron

作     者：A Y Galashev O R Rakhmanova V A Kovrov Yu P Zaikov 

作者机构：Institute of High-Temperature Electrochemistry Ural Branch of Russian Academy of Sciences Yekaterinburg 620990 Russia 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2017年第26卷第3期

页      面：569-574页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：Project supported by the Ministry of Science and Education of the Russian Federation(Grant No.14.607.21.0035 unique identifier RFMEFI60714X0035) 

主　　题：aluminium film diffusion coefficients iron molecular dynamics 

摘      要：Metallic coatings of many types can be applied to steel to provide outstanding, long-term corrosion protection. A thin A1 film is studied at an Fe substrate by the molecular dynamics method at temperatures ranging from 300 K to 1173 K. A1 atoms are found to penetrate the Fe matrix at a temperature of 873 K. The potential energy of the system changes step-like at a temperature of 1173 K. At such temperature mean square atomic displacement significantly changes. The behaviors of the A1 and Fe diffusion coefficients are mainly determined by the temperature dependence of the diffusion activation energy.