| 船舶结构钢海洋环境点蚀模型研究之一:最大点蚀深度时变模型 |
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| 引用本文： | 王燕舞,黄小平,崔维成. 船舶结构钢海洋环境点蚀模型研究之一:最大点蚀深度时变模型[J]. 船舶力学, 2007, 11(4): 577-586 |
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| 作者姓名： | 王燕舞 黄小平 崔维成 |
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| 作者单位： | 上海交通大学海洋工程国家重点实验室,上海,200030;中国船舶科学研究中心,江苏,无锡,214082 |
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| 摘 要： | 腐蚀是导致老龄船舶结构失效的主要原因之一.结合基本点蚀原理,本文对碳钢、低合金钢海水全浸带点蚀的主要影响因素、具体点蚀进程做了简要解释与评述.针对我国船舶结构常用碳钢、低合金钢的实海腐蚀试验观测数据建立了新型Weibull函数形式的点蚀最大深度模型.通过对比验证,证明采用Weibull函数表示点蚀最大深度随时间变化关系是合适的.
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| 关 键 词： | 碳钢 海洋环境 点蚀 腐蚀模型 最大点蚀深度 |
| 文章编号： | 1007-7294（2007）04-0577-10 |
| 修稿时间： | 2007-04-08 |
Pitting corrosion model of mild and low-alloy steel in marine environment-Part 1: Maximum pit depth |
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| WANG Yan-wu,HUANG Xiao-ping,CUI Wei-cheng. Pitting corrosion model of mild and low-alloy steel in marine environment-Part 1: Maximum pit depth[J]. Journal of Ship Mechanics, 2007, 11(4): 577-586 |
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| Authors: | WANG Yan-wu HUANG Xiao-ping CUI Wei-cheng |
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| Affiliation: | 1 State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200030, China; 2 China Ship Scientific Research Center, Wuxi 214082, China |
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| Abstract: | Corrosion is one of the main reasons which causing structure failure and damage.For mild and low-alloy structural steels under marine immersion conditions,the main influencing factor and the specific process of pitting corrosion were summarized in this paper,according the pitting corrosion mechanics and various corrosion data from some long-term field investigations.The new maximum pit-depth model described by weibull-function was also given here,which will be more precisely to predicting the statistical characteristics of maximum macro-pit depth.By contrasted with other pitting corrosion models,it will be reasonable to describe the maximum pit-depth curve of mild and low-alloy steel as a weibull function varying with exposure period. |
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| Keywords: | mild steel marine environment pitting corrosion corrosion model maximum pit depth |
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