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研究了氯化铈表面化学处理对于ＳｉＣｐ／２０２４ Ａｌ铝基复合材料在含氯离子介质中的耐蚀性的影响．研究结果表明，氯化铈表面化学处理使该复合材料的点蚀电位（Ｅｐ）发生显著正移（Ｐ ＜０．０１）．处理后点蚀电位与自腐蚀电位之差（ΔＥ ＝ Ｅｐ－ Ｅｃｏｒｒ）也显著增大．而随着铝基复合材料中ＳｉＣｐ 的体积分数的增加，表面处理的效果显著下降．交流阻抗谱和电流－时间谱测试表明，经过氯化铈化学处理的铝基复合材料相比未处理前在０．１ ｍ ｏｌ／ＬＮａＣｌ溶液中浸泡不易出现局部破坏和微孔腐蚀现象．
The effect of surface chemical treatment of cerium chloride on the corrosion resistance of SiCp / 2024Al aluminum matrix composites in chloride ion-containing media was investigated. The results show that the surface chemical treatment of cerium chloride makes the pitting potential (Ep) of the composite significantly positive shift (P <0.01). After treatment, the difference between the pitting potential and the corrosion potential (ΔE = Ep-Ecorr) also increases significantly. With the increase of volume fraction of SiCp in aluminum matrix composites, the effect of surface treatment decreased significantly. AC impedance spectroscopy and current-time spectroscopy tests show that the cerium chloride-treated aluminum-based composites are less susceptible to partial destruction and micropore corrosion when soaked in 0.1 mol / L NaCl solution than before.