中国物理B ›› 2017, Vol. 26 ›› Issue (3): 38201-038201.doi: 10.1088/1674-1056/26/3/038201

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Diffusion in the aged aluminium film on iron

A Y Galashev, O R Rakhmanova, V A Kovrov, Yu P Zaikov   

  1. Institute of High-Temperature Electrochemistry, Ural Branch of Russian Academy of Sciences, Yekaterinburg 620990, Russia
  • 收稿日期:2016-10-24 修回日期:2016-11-30 出版日期:2017-03-05 发布日期:2017-03-05
  • 通讯作者: A Y Galashev E-mail:alexander-galashev@yandex.ru
  • 基金资助:

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

Diffusion in the aged aluminium film on iron

A Y Galashev, O R Rakhmanova, V A Kovrov, Yu P Zaikov   

  1. Institute of High-Temperature Electrochemistry, Ural Branch of Russian Academy of Sciences, Yekaterinburg 620990, Russia
  • Received:2016-10-24 Revised:2016-11-30 Online:2017-03-05 Published:2017-03-05
  • Contact: A Y Galashev E-mail:alexander-galashev@yandex.ru
  • Supported by:

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

摘要:

Metallic coatings of many types can be applied to steel to provide outstanding, long-term corrosion protection. A thin Al film is studied at an Fe substrate by the molecular dynamics method at temperatures ranging from 300 K to 1173 K. Al 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 Al and Fe diffusion coefficients are mainly determined by the temperature dependence of the diffusion activation energy.

关键词: aluminium film, diffusion coefficients, iron, molecular dynamics

Abstract:

Metallic coatings of many types can be applied to steel to provide outstanding, long-term corrosion protection. A thin Al film is studied at an Fe substrate by the molecular dynamics method at temperatures ranging from 300 K to 1173 K. Al 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 Al and Fe diffusion coefficients are mainly determined by the temperature dependence of the diffusion activation energy.

Key words: aluminium film, diffusion coefficients, iron, molecular dynamics

中图分类号:  (Computational modeling; simulation)

  • 82.20.Wt
81.15.Aa (Theory and models of film growth)