用一个简单的元胞自动机从介观的角度对腐蚀环境中金属表面蚀坑的生长演化过程进行研究.假定腐蚀体系为扩散过程控制的金属腐蚀体系,引入溶液浓度、溶解概率和钝化概率,对腐蚀过程中质量转移、金属溶解和钝化过程进行分析;用模拟过程中的溶解掉的元胞数目表征溶解电流,用二维元胞自动机网格中纵向上溶解掉的元胞数目来表征蚀坑深度,研究了在不同的溶液浓度、溶解及钝化概率下溶解电流随时间的变化规律,其结果表明为服从时间的幂函数关系;并得到了蚀坑深度随时间的变化曲线.
参考文献
| [1] | C Vautrin-Ul,A Taleb,J Stafiej,et al.Mesoscopic modelling of corrosion phenomena:Coupling between electrochemical and mechanical processes,analysis of the deviation from the Faraday law[J].Electrochimica Acta,2007,52:5368. |
| [2] | B Malki,B Baroux.Computer simulation of the corrosion pit growth[J].Corrosion Science,2005,47:171. |
| [3] | J Saunier,M Dymitrowska,A Chausse,et al.Diffusion,interactions and universal behavior in a corrosion growth model[J].Journal of Electroanalytical Chemistry,2005,582:267. |
| [4] | J Saunier,A Chausse,J Stafiej,et al.Simulations of diffusion limited corrosion at the metal/environment interface[J].Journal of Electroanalytical Chemistry,2004,563:239. |
| [5] | A Taleb,J Stafiej,A Chausse,et al.Simulations of film growth and diffusion during the corrosion process[J].Journal of Electroanalytical Chemistry,2001,500:554. |
| [6] | Bastien Chopard,Michel Droz著.祝玉学,赵学龙译.物理系统的元胞自动机模拟[M].北京:清华大学出版社,2003.8. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%