金属表面腐蚀损伤形态演化规律研究
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摘要
针对金属材料在环境作用下容易形成腐蚀损伤而致其力学性能降低的问题,采用元胞自动机方法,通过定义元胞规则,以氢标电极电位作为材料特性参数,定义铝和铁两种金属的溶解概率。研究两种材料在不同的温度和相对湿度腐蚀环境下,腐蚀表面形态演化和腐蚀产物形成规律。结果为研究金属搭接件在环境作用下的枕垫效应提供了理论依据。
Corrosion damage of metal materials under the action of environment reduces the mechanical property of materials. By means of cellular automaton method for defining cellular rule,the dissolution probability of aluminum and iron was defined by using hydrogen standard electrode potential as a material characteristic parameter. The corrosion morphology evolution and corrosion product formation of two materials under different temperature and relative humidity were studied. The results provide a theoretical basis for studying the pillowing effect of metal lap joints under the influence of environment.
Corrosion damage of metal materials under the action of environment reduces the mechanical property of materials. By means of cellular automaton method for defining cellular rule,the dissolution probability of aluminum and iron was defined by using hydrogen standard electrode potential as a material characteristic parameter. The corrosion morphology evolution and corrosion product formation of two materials under different temperature and relative humidity were studied. The results provide a theoretical basis for studying the pillowing effect of metal lap joints under the influence of environment.
引文
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[12]郭东旭,任克亮,王燕昌,等.金属局部腐蚀的三维元胞自动机模型[J].力学与实践,2014,36(4):447-452.
[2]李晓刚,等.材料腐蚀与防护[M].长沙:中南大学出版社,2009:1-180.
[3]王慧,宋笔锋,吕国志,等.蚀坑几何形貌的三维模拟[J].航空学报,2009,30(11):2186-2192.
[4]王慧,吕国志,张有宏.蚀坑生长演化过程的元胞自动机模拟[J].腐蚀科学与防护技术,2008,20(6):473-475.
[5]高士武,郭东旭,任克亮,等.金属腐蚀产物膜生长演化机理研究[J].固体力学学报,2013,33(S1):133-135.
[6]李磊,李晓刚,肖葵,等.金属在湿大气环境下初期腐蚀行为的元胞自动机模拟[J].中国腐蚀与防护学报,2010,30(2):114-117.
[7]VAUTRIN?UI C,TALEB A,STAFIEJ J,et al. Mesoscopic mod?elling of corrosion phenomena:Coupling between electrochemical and mechanical processes,analysis of the deviation from the Faraday law[J]. Electrochim Acta,2007,52:7082-7810.
[8]VAUTRIN?UI C,CHAUSSE A,STAFIEJ J,et al. Numerical simulations of corrosion processes?properties of the corrosion front and formation of islands[J]. Condensed Matters Phys,2004,7:813-828.
[9]DI CAPRIO D,VAUTRIN?UI C,STAFIEJ J,et al. Morphology of corroded surfaces:Contribution of cellular automaton modelling[J]. Corrosion Science,2011,53(1):418-425.
[10]黄淑菊.金属腐蚀与防护[M].西安:西安交通大学出版社,1987:10-79.
[11]陈玉璞,刘芙燕,宋学军,等.温度对电极电位精确度影响及其校正[J].沈阳师范学院学报,2002,20(3):206-208.
[12]郭东旭,任克亮,王燕昌,等.金属局部腐蚀的三维元胞自动机模型[J].力学与实践,2014,36(4):447-452.