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首页> 外文会议>Associazione Italiana Di Metallurgia;Dechema;Annual event of the European Federation of Corrosion on European Corrosion Congress;uropean Federation of Corrosion >Concentration effect of salt solution on the corrosion of carbon steels investigated by salt spray test
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Concentration effect of salt solution on the corrosion of carbon steels investigated by salt spray test

机译：盐雾试验研究了盐溶液对碳钢腐蚀的浓集作用

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摘要

Corrosion of automotive steels was investigated by accelerated corrosion tests such as salt spray test (SST) and cyclic corrosion test (CCT) using different concen-trations of 1% and 5% NaCl solution. The corrosion behaviors of the automotive cold-rolled (CR) carbon steels and Zn-coated steels were influenced by the test conditions such as continuous wet state in SST or cyclic wet and dry states in CCT. CRs were more damaged with highly localized corrosion tendency in CCT where the corrosive agents were concentrated in rust layer during wet and dry cycles at high temperature. Zn-coated steels were less damaged in CCT due to the formation of protective corro-sion products. The painted CRs and Zn-coated steels are also influenced by the con-dition of CCT and SST. Large blisters in the painted CRs were formed in CCT, but in SST for Zn-coated steels. However, salt concentration had no significant influence on the corrosion behaviors both of bare and painted automotive steels. No valid trend of corrosion behavior was found as a function of concentrations of salt solution in the present study.
机译：通过使用不同浓度的1％和5％NaCl溶液的盐雾试验（SST）和循环腐蚀试验（CCT）等加速腐蚀试验研究了汽车钢的腐蚀情况。汽车冷轧（CR）碳钢和镀锌钢的腐蚀行为受测试条件的影响，例如SST中的连续湿态或CCT中的循环湿态和干态。在高温下干湿循环中，腐蚀剂在锈层中集中，而腐蚀剂在CCT中更受局部腐蚀趋势的破坏。由于保护性腐蚀产物的形成，镀锌钢在CCT中的损坏较少。涂漆的CR和镀锌钢也受CCT和SST状况的影响。涂漆的CR中的大水泡在CCT中形成，但在SST中对于镀锌钢形成。然而，盐浓度对裸露的和涂漆的汽车钢的腐蚀行为均没有显着影响。在本研究中，没有发现腐蚀行为的有效趋势是盐溶液浓度的函数。

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