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利用金相和 Ｘ射线能谱分析了 Ａ１６０６１／ＳｉＣｐ复合材料表面 Ｃｅ转化膜的腐蚀行为实验表明： Ｃｅ转化膜在 ＮａＣｌ溶液中的腐蚀以点蚀开始，点蚀处基体为 ＳｉＣ颗粒的富集区根据 Ｍａｎｓｆｅｌｄ点腐蚀模型等效电路，通过电化学阻抗谱（ＥＩＳ）研究了 Ｃｅ转化膜在 ＮａＣｌ溶液中的腐蚀程度；转化膜在 ＮａＣＩ溶液中浸泡时间较短的情况下，等效电路中的 Ｗａｒｂｅｒｇ阻抗可忽略，可以对等效电路简化处理研究转化膜点蚀程度
The corrosion behavior of Ce conversion coatings on A16061 / SiCp composites was analyzed by metallography and X-ray energy dispersive spectroscopy. The results show that the corrosion of Ce conversion coating in NaCl solution starts with pitting corrosion, and the matrix of pitting corrosion is the enrichment region of SiC particles According to the equivalent circuit of Mansfeld pitting corrosion model, the corrosion degree of Ce conversion coating in NaCl solution was studied by electrochemical impedance spectroscopy (EIS). When the immersion time of conversion coating in NaCI solution was short, Warberg The impedance is negligible, and the equivalent circuit simplification can be used to study the pitting corrosion of the conversion coating