Tribological mechanisms of the synergistic effect between sulfur- and phosphorus-free organic molybdenum and ZDDP
Tribological mechanisms of the synergistic effect between sulfur- and phosphorus-free organic molybdenum and ZDDP
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无硫无磷有机钼与ZDDP协同作用的摩擦学机制
DOI：
10.1016/j.triboint.2022.108078
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发表时间：
2022
影响因子：
6.2
通讯作者：
Tianhui Ren
中科院分区：
文献类型：
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作者：
Hui Zhao;Jiao Wang;Chenchen Wang;Lei Zheng;Zhipeng Li;Tianhui Ren
本工作制备了三种不同结构的无硫无磷有机双金属分子MODE（酰胺型）、MGMO（酯型）和MGME（醚型），并研究了分子结构与摩擦学性能的关系。此外，还研究了与常规二烷基二硫代磷酸锌（ZDDP）复配后的摩擦学性能及机理，结果表明，复配后的抗磨减摩协同效应顺序为：MODE+ZDDP > MGMO+ZDDP > MGME+ZDDP。通过深入的表面分析和断面分析，进一步探讨了摩擦学机理，结果表明，在复合材料表面形成了由二硫化钼、氧化钼、硫酸盐、磷酸盐和多磷酸盐组成的均匀致密的摩擦膜，其厚度为50-200 nm，是复合材料具有良好协同效应的主要原因。
In this work, three environmentally friendly sulfur- and phosphorus-free organic molybdenums, MODE (amide.type), MGMO (ester type) and MGME (ether type) with different structures were prepared, and the relationship.between molecular structure and tribological properties was investigated. Furthermore, the tribological properties and mechanisms after compounding with conventional zinc dialkyldithiophosphate (ZDDP) were also.investigated, indicating that the synergistic effect on antiwear and antifriction properties has the following order:.MODE+ZDDP > MGMO+ZDDP > MGME+ZDDP. We further explored the tribological mechanisms through the.in-depth surface and cross-sectional analyses, which manifests that the formation of homogeneous and compact.tribofilm composed of molybdenum disulfide, molybdenum oxide, sulfate, phosphate, and polyphosphate with.the thickness of 50–200 nm is contributed to the excellent synergistic effect.