阅读量：

90

作者：

权变利，李军旗，陈朝轶

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摘要：

采用失重法,扫描电镜(SEM)和能谱仪(EDS)分析了碱性溶液中硫代硫酸钠对Q235钢腐蚀动力学的影响.结果表明:Q235钢表面腐蚀程度随着硫代硫酸钠含量的增加而加深;在含硫的碱性溶液中Q235钢的腐蚀速率与腐蚀时间呈幂函数关系,结合质量作用定律确定了动力学反应级数和速率常数;腐蚀产物主要由Fe,S,O元素组成,硫化物为FeS和FeS2,其颗粒疏松且较易脱落,氧化物为Fe3O4.%Effects of sodium thiosulfate on the corrosion dynamics of Q235 steel in an alkaline solution were studied by weight loss testing,scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS).The results indicate that the corrosion degree of Q235 steel increased with the concentration of sodium thiosulfate.The kinetic reaction order and rate constant were obtained through the law of mass action.The corrosion rate showed a power function with the corrosion time for Q235 steel in the alkaline solution containing sulfur.The corrosion products were mainly composed of Fe,O and S elements.The sulfides were FeS and FeS2 whose particles were loose and fall off easily,and the corresponding oxide was Fe3O4.

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关键词：

Q235钢 硫代硫酸钠 腐蚀动力学

年份：

2018