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首页> 外文期刊>Journal of Materials Engineering and Performance >Atmospheric Corrosion Resistance of Weathering Angle Steels in a Simulated Industrial Atmosphere
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Atmospheric Corrosion Resistance of Weathering Angle Steels in a Simulated Industrial Atmosphere

机译：耐候角钢在模拟工业大气中的大气耐腐蚀性

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摘要

The influences of RE, Cr, P and P-RE elements on atmospheric corrosion resistance behaviors of weathering angle steels in a simulated industrial atmosphere were investigated by periodic immersion wet/dry cyclic corrosion test. According to weight loss test and rust analysis results, the corrosion rate is relatively faster in the initial stage of the corrosion since the compositions of rust layer are mainly gamma-FeOOH and Fe3O4. Then, gamma-FeOOH and Fe3O4 gradually transform to alpha-FeOOH and the corrosion rate reduces. The increasing amount of alpha-FeOOH with enhanced corrosion resistance is related to the addition of phosphorus element and the enrichment of copper, chromium and nickel elements in inner rust layer. Besides, rare earth can reduce the content of chromium and work with phosphorus to improve atmospheric corrosion resistance of steel. Consequently, weathering angle steel containing phosphorus and rare earth elements exhibits high corrosion resistance, and the electrochemical measurement on it indicates that the anodic process is inhibited and the evolution of resistance increases with the prolongation of immersion time.
机译：通过周期性浸湿湿润/干循环腐蚀试验研究了Re，Cr，P和P-Re元件对耐候角钢的大气耐腐蚀性的影响。根据减肥试验和锈分析结果，腐蚀速率在腐蚀的初始阶段中的腐蚀速率相对较快，因为锈层的组成主要是γ-FeOh和Fe3O4。然后，γ-FeOOH和Fe3O4逐渐变换为α-FeO​​OH，腐蚀速率降低。具有增强耐腐蚀性的α-FeO​​OH的增加与添加磷素元素和内锈层中铜，铬和镍元素的富集有关。此外，稀土可以降低铬的含量，并用磷加工，提高钢的大气耐腐蚀性。因此，含有磷和稀土元素的风化角钢具有高耐腐蚀性，并且电化学测量表明阳极过程受到抑制，并且电阻的演化随着浸渍时间的延长而增加。

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