高硅铸铁在多种环境下的腐蚀行为研究

Corrosion behavior of high silicon cast iron in several kinds of corrosion conditions

采用失重分析、金相分析等实验方法研究了高硅铸铁的组织及在不同环境下的耐腐蚀性能。实验结果表明,高硅铸铁在各种腐蚀介质中均有良好的耐蚀性,腐蚀溶液的浓度对高硅铸铁的腐蚀速度有较大影响。高硅铸铁在同样浓度的酸性环境中的耐蚀性比在碱性环境中好,在中性盐环境中的耐蚀性则居两者之间。

Structure and corrosion behavior of the high silicon cast iron in several different environments have been tested by means of weight-loss analysis and metallograph. Experiment indicated that the corrosion resistance of high silicon cast iron in different corrosion environments is superior , and there is great effect of the corrosion solution concentration on corrosion velocity. The corrosion resistance of high silicon cast iron in the acid solution is apparently superior to the same solution concentration alkalescence solution. The corrosion resistance of high silicon cast iron in the salt solution is between the acid and alkalescence solution.