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Ni-Cr系与Mn系低合金钢耐点蚀性能的比较
王建民1, 陈学群1
海军工程大学理学院
摘要:
通过极化试验与模拟闭塞腐蚀电池试验对常用的两类低合金船体结构钢耐蚀性能做了比较,并结合实船使用情况对两类钢的耐蚀性能做了较全面的评价。结果表明,Ni-Cr系钢的点蚀诱发敏感性低于Mn系钢;在模拟长期挂片时Ni-Cr钢的点蚀扩展速率反比Mn钢大,而实船使用情况是Ni-Cr系钢的耐蚀性能远比Mn系钢好。
关键词:  低合金钢  点蚀诱发  点蚀扩展  闭塞腐蚀电池  耐蚀性能
DOI：
分类号:
基金项目:
A comparative study of pitting resistance of Ni-Cr steels and Mn steels
Abstract:
Pitting resistance of two widely used types of low alloy steels (Ni-Cr and Mn) was compared by polarization test and simulating occluded corrosion cell test. The results showed that the susceptibility of nickel-chromium steel to pitting initiation was smaller lower than that of manganese steels. The rate of pitting propagation of Nickel-chromium steel was greater than that of manganese steels. In overall, the resistance of nickel-chromium steel was better than that of manganese steels in real case.
Key words:  low alloy-steel  pitting initiation  pitting propagation  simulating occluded corrosion cell  pitting resistance
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