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采用周浸腐蚀试验机、扫描电镜(SEM)、电化学工作站等,研究了含锡耐候钢和传统耐候钢在模拟高湿热海洋大气环境中的腐蚀行为规律,探讨了Sn元素对传统耐候钢耐高湿热海洋大气腐蚀性能的影响。结果表明:锡元素加入耐候钢中可以降低腐蚀速率,让锈层更均匀地生成,提高锈层的自腐蚀电位,降低锈层自腐蚀电流密度,对耐候钢阳极溶解起抑制作用,同时使锈层电阻Rr及与基体结合处的反应电阻Rt升高,增强锈层对钢基体的保护,有利于耐候钢耐海洋大气腐蚀性能的提升。
The corrosion behavior of tin-containing weathering steels and conventional weathering steels in simulated high-humid-hot marine atmospheres was studied by means of immersion corrosion testing machine, scanning electron microscope (SEM) and electrochemical workstation. The effects of Sn on traditional weathering steels Influence of High Humidity and Hot Oceanic Atmospheric Corrosion Properties. The results show that the addition of tin to weathering steels can reduce the corrosion rate, make the rust layer more uniform, increase the self-corrosion potential of the rust layer, decrease the self-corrosion current density of the rust layer, inhibit the anodic dissolution of the weathering steel, The layer resistance Rr and the reaction resistance Rt at the junction with the substrate are increased, and the protection of the rust layer on the steel substrate is enhanced, which is in favor of improving the corrosion resistance of the weathering steel to the marine atmosphere.