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MoS2 formation induced by amorphous MoS3 species under lubricated friction

机译：润滑摩擦下非晶态MoS3诱导的MoS2形成

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Amide molybdate has been recently introduced as a friction modifier for tribological applications. Combined with zinc dithiophosphate (ZDDP) and fatty amines, it provides an ultralow friction coefficient. The ultimate product of Mo compound transformations in tribological contact, due to frictional heating and shearing, as well as chemical interactions with oil additives, is molybdenum sulfide (MoS _(2) ). Understanding the decomposition of amide molybdate leading to MoS _(2) is of primary importance to the optimization of the design of lubricant formulations. This study focuses on the investigation by Raman spectroscopy of amide molybdate decomposition intermediates. Raman spectra of tribofilms, obtained after friction tests under different temperatures and pressures, revealed the formation of an amorphous MoS _(3) intermediate coexisting with MoS _(2) . However, under severe conditions, the tribofilms are mostly composed of MoS _(2) .
机译：钼酸酰胺最近被引入作为摩擦改性剂，用于摩擦学领域。与二硫代磷酸锌（ZDDP）和脂肪胺结合使用，可提供超低的摩擦系数。由于摩擦加热和剪切以及与油添加剂的化学相互作用，摩擦接触中Mo化合物转变的最终产物是硫化钼（MoS _（2））。理解导致MoS _（2）的钼酸酰胺的分解对于优化润滑剂配方的设计至关重要。这项研究的重点是通过拉曼光谱研究酰胺钼酸盐分解中间体。在不同温度和压力下进行摩擦测试后得到的摩擦膜拉曼光谱表明，形成了与MoS_（2）共存的非晶态MoS_（3）中间体。但是，在恶劣条件下，摩擦膜主要由MoS _（2）组成。

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