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首页> 外文期刊>Tribology Transactions >Interaction of ZDDP with Borated Dispersant Using XANES and XPS
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Interaction of ZDDP with Borated Dispersant Using XANES and XPS

机译：ZDDP与硼酸分散剂的XANES和XPS相互作用

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The thermochemical reaction and tribochemical reaction of zinc dialkyldithiophosphate (ZDDP), a borateddispersant, and the mixture of ZDDP and borated dispersant on steel surfaces were investigated. Bothpin-on-disk and ball-on-disk were used to generate tribofilms. The chemical state of nitrogen, boron, phosphorus, and sulfur in heated oil solutions, thermal films, and tribofilms were analyzed by X-ray absorption near edge structure (XANES) spectroscopy to obtain the chemical nature of species on the surface and in the bulk of the films. High-resolution X-ray photoelectron spectroscopy (XPS) has also been used to analyze boron (B) in tribofilms. The borated dispersant in base oil by itself yields good anti-wear behavior. This can be attributed to the presence of boron in the dispersant. The wear scar widths (WSW) for ZDDP alone, and in combination with the dispersant, yield similar results within the experimental error. It was found that the borated dispersant facilitates the decomposition of ZDDP and the formation of phosphate in tribofilms and thermal films. B K-edge XANES shows that boron has a trigonal coordination in the untreated additive, but the coordination changes partially to a tetrahedral coordination in the tribofilm upon rubbing. No BN was detected in the film analyzed by B K-edge or N K-edge. Boron Is XPS also did not show the presence of BN in the film.
机译：研究了硼酸分散剂二烷基二硫代磷酸锌（ZDDP）的热化学反应和摩擦化学反应，以及ZDDP和硼酸分散剂在钢表面的混合物。盘上销钉和盘上球钉均用于产生摩擦膜。通过近边缘结构（XANES）的X射线吸收光谱分析了加热的油溶液，热膜和摩擦膜中氮，硼，磷和硫的化学状态，从而获得了表面和整体中物质的化学性质电影。高分辨率X射线光电子能谱（XPS）也已用于分析摩擦膜中的硼（B）。基油中的硼酸化分散剂本身具有良好的抗磨性能。这可以归因于分散剂中存在硼。单独使用ZDDP并与分散剂结合使用时，磨损痕迹宽度（WSW）会在实验误差范围内产生相似的结果。发现硼酸化的分散剂促进了摩擦膜和热膜中ZDDP的分解和磷酸盐的形成。 B K边缘XANES表明，未经处理的添加剂中硼具有三角配位，但摩擦后配位部分改变为摩擦膜中的四面体配位。在通过B K边缘或N K边缘分析的膜中未检测到BN。电影中的Boron Is XPS也没有显示BN的存在。

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