Abstract Zincdialkyldithiophosphates (ZDDPs) form protective antiwear tribofilms but the growth mechanism and their contribution to friction on non-ferrous alloys are not well understood. Using a recently developed in situ AFM technique, we monitor the growth of ZDDP based tribofilms, friction, and wear, over Al matrix and Si phase of ADC12, sliding against a nonferrous alumina probe. Sliding tests performed at elevated temperature (110 °C), simultaneously over Al and Si phase, reveal tribofilm growth on both Al and Si regions without noticeable wear. However, the tribofilm thickness, density, and coefficient of friction on the Si phase are higher than on the Al matrix. Significant wear and increase in the coefficient of friction was observed when sliding within the Al matrix region alone.

中文翻译：

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Al-Si 合金上 ZDDP 抗磨摩擦膜的摩擦学和生长的原位微观研究

摘要 二烷基二硫代磷酸锌 (ZDDPs) 形成保护性抗磨摩擦膜，但其生长机制及其对有色合金摩擦的贡献尚不清楚。使用最近开发的原位 AFM 技术，我们监测了基于 ZDDP 的摩擦膜、摩擦和磨损在 ADC12 的 Al 基体和 Si 相上的生长，并在有色氧化铝探针上滑动。在升高的温度 (110 °C) 下同时在 Al 和 Si 相上进行的滑动测试显示，Al 和 Si 区域上的摩擦膜生长没有明显的磨损。然而，Si 相上的摩擦膜厚度、密度和摩擦系数高于 Al 基体。当单独在铝基体区域内滑动时，观察到显着磨损和摩擦系数增加。