海水中阴极保护35钢有限元模拟研究  

A Simulation Study of Cathodic Protection of 35-Steel in Seawater by Finite Element Method

作　　者：王巍[1,2] 孙虎元[1] 孙立娟[1] 王顺[1,2] 李红玲[1] 

机构地区：[1]中国科学院海洋研究所,青岛266071 [2]中国科学院研究生院,北京100049

出　　处：《腐蚀与防护》2009年第7期462-465,469,共5页Corrosion & Protection

基　　金：国家自然科学基金项目(No.40776044);中国科学院知识创新工程重要方向项目(KZCX2-YW-210)

摘　　要：设计了海水中铝基牺牲阳极阴极保护35钢的电极电位分别处于保护范围内、过保护、欠保护状态下的物理模型,推导Laplace方程的弱形式,方便了有限元程序设计。利用Kriging网格化插值法比较了有限元计算和实验数据。结果表明,有限元法模拟计算三种保护状态下的电位分布接近测量值。Physical models of cathodic protection for 35-steel by aluminum sacrificial anode in seawater were built under different conditions of normal cathodic protection, over-protection and under-protection, respectively. And the weak form of Laplace equation was deduced to make finite element method （FEM） numerical calculation conveniently. The comparison of FEM data and measured experimental data was made by Kriging gridding interpolation. The results show that the potential distributions under three protection conditions simulated by FEM approximated to measured experimental results.

关 键 词：有限元 阴极保护 35钢 牺牲阳极 过保护 欠保护 

分 类 号：TG174.41[金属学及工艺—金属表面处理]