为了揭示接地网材20钢在砂质土壤中的腐蚀行为与Cl-的关系,以宁夏地区砂质土壤为腐蚀介质,利用土壤埋片试验、电化学试验研究了20钢在不同Cl-浓度砂质土壤中的腐蚀形为；用扫描电镜、X射线衍射仪对腐蚀产物形态和成分进行了表征分析.结果表明:砂质土壤中Cl-含量对20钢的腐蚀过程有较大的影响,腐蚀速率随着Cl-浓度的升高而先增后减,当Cl-浓度为1.5％时,腐蚀速率达到最大值；Cl-在腐蚀过程中起催化作用,促进金属的溶解,Cl-浓度为1.5％时,20钢表面腐蚀产物主要有Fe2O3和FeOOH,形成近阵列的结构,良好地覆盖在基体上,对腐蚀起到了一定的阻碍作用.
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