利用Ce2(SO4)3溶液在X70钢表面制得金黄色铈转化膜,通过正交试验确定最佳成膜工艺条件.采用点滴试验、失重法及极化曲线测试分析了转化膜的耐蚀性能,用金相显微镜观测了有转化膜的钢腐蚀前后的形貌.失重法及极化曲线测试结果表明:铈转化膜可明显降低X70钢的腐蚀速率,缓蚀效率达80％以上.金相显微镜测试结果表明,存在铈转化膜的X70钢腐蚀前后形貌基本不变,耐蚀性能明显提高.
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