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实验室和工业试验表明，含镧的润滑添加剂二烷基二硫代磷酸镧（ＬａＤＤＰ）和一种有机硼酸酯（ＯＢ）具有显著的协合润滑作用，将两种化合物复合加至润滑油中，可显著改善油品的抗磨减摩性能。采用俄歇电子能谱（ＡＥＳ）和Ｘ射线光电子能谱（ＸＰＳ）研究其协合润滑机理。结果表明，ＬａＤＤＰ和ＯＢ具有协合润滑作用的主要原因，除了在摩擦表面生成硫酸盐、磷酸盐、氧化镧和单质硼等表面膜起润滑作用外，更重要的是镧的存在对硼的摩擦扩散起到了“摩擦催渗”作用，使摩擦亚表面硼的含量增加，并形成Ｌａ－Ｂ摩擦共渗层，进一步提高材料表面硬度，从而改善耐磨性能
Laboratory and industrial tests have shown that the lanthanum-containing lubricating additive LaDDP and an organoboronate (OB) have a significant synergistic lubricating effect, and the two compounds are complex-added to a lubricating oil In, can significantly improve the oil anti-wear antifriction performance. The synergistic lubrication mechanism was studied by Auger electron spectroscopy (AES) and X-ray photoelectron spectroscopy (XPS). The results show that LaDDP and OB have the main reason for synergistic lubrication. In addition to the lubricating effect of surface films such as sulfate, phosphate, lanthanum oxide and elemental boron on the tribological surface, more importantly, the friction of boron in the presence of lanthanum Diffusion has played the role of “friction reminder”, so that the friction sub-surface boron content increased, and the formation of La-B friction co-layer, and further improve the surface hardness of materials to improve wear resistance