45#碳钢在选煤厂三种不同水质中的腐蚀行为

Corrosion Behavior of 45# Carbon Steel in Three Different Kinds of Waters from a Washery

以河南永城煤矿区某选煤厂的水质为研究对象,采用全浸失重法、电化学测试及X射线衍射方法研究了45#碳钢在选煤厂清水(生活用水)、循环水和矿井水(生产系统补加水)3种水质中的腐蚀行为。结果表明,45#碳钢在3种水质中均有不同程度的腐蚀,且其腐蚀程度排序为:矿井水>循环水>清水;XRD图谱分析结果显示,3种水质中的腐蚀产物均为铁锈,且其主要成分为Fe3O4和FeO(OH),说明整个电化学腐蚀过程阳极主要进行的是铁的溶解过程。

Taking the water in the coal mines of Yongcheng in Henan povince as a researcn subject, t behaviors of 45# carbon steel in clean water, circulating water and mine water were studied by weight loss method, electrochemical tests and XRD. The results show that 45# carbon steel in these three types of water all had different degrees of corrosion, and the corrosion degree sequence was as follows： mine water 〉 circulating water 〉 clean water. XRD analysis results show that the corrosion product in three kinds of water is rust, and its main ingrediens is Fe3O4 and FeO（OH）, indicating that the electrochemical corrosion process of the anode was mainly iron dissolution process.