【摘要】 利用循环伏安和旋转圆盘电极研究了 ＬＹ１２铝合金表面 Ｃｅ转化膜的成膜机理循环伏安研究结果表明： Ｈ２Ｏ２在成膜过程中只发生化学分解反应释放氧气，而不发生电化学还原．旋转圆盘电极研究初步表明：在不同处理液体系中，Ｏ２的还原反应过程不同．在Ｃｅ（ＮＯ３）３处理液体系中，Ｏ２近似按四电子步骤还原；在 Ｃｅ（ＣＯ３）２处理液体系中，Ｏ２近似按二电子步骤还原．更多还原

【Abstract】 The formation mechanism of Ce conversion coatings on LY12 alloy was investigated by employing cyclic voltammetry and rotating-disc electrode. The results of cyclic voltammetry showed that H2O2 in the treatment solution carried chemical decomposition reaction acting as the source of O2. The results of rotating-disc electrode analysis showed that in Ce(NO3)3 treatment solution the reduction reaction of O2 proceeded through a four-electron pathway. In Ce(CO3)2 treatment solution O2 was reduced by two-electron pathway.更多还原