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首页> 外文会议>American Society of Mechanical Engineers(ASME)/Society of Tribologists and Lubrication Engineers(STLE) International Joint Tribology Conference; 20071022-24; San Diego,CA(US) >Studies on ZDDP anti-wear films formed under the different conditions by XANES spectroscopy, atomic force microscopy and 31P NMR
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Studies on ZDDP anti-wear films formed under the different conditions by XANES spectroscopy, atomic force microscopy and 31P NMR

机译：XANES光谱，原子力显微镜和31P NMR研究在不同条件下形成的ZDDP耐磨膜

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摘要

Antiwear (AW) films, generated from a mineral base oil containing zinc dialkyl dithiophosphate (ZDDP) additive, were extensively studied. These films were formed at various conditions such as different temperatures, various loads and rubbing times. The surface morphology of these films was investigated using atomic force microscopy (AFM) and the surface roughness of these films has been calculated from the images. X-ray absorption near edge structure (XANES) spectroscopy has been used to characterize the chemistry of these films. The intensity of phosphorus K-edge was also used to monitor the thickness of these films. Phosphorus L-edge spectra show that these films have slightly variable chemical natures. 31P Nuclear magnetic resonance (31P NMR) was used to study the ZDDP components in the residue oils. The spectra show that the primary and secondary ZDDP decompose quite differently at the various conditions. Tribological characteristics of these AW films were probed by measuring the coefficients of friction and the wear scar width of the counter faces.
机译：由含二烷基二硫代磷酸锌（ZDDP）锌的矿物基础油制得的抗磨（AW）膜得到了广泛的研究。这些膜是在各种条件下形成的，例如不同的温度，不同的载荷和摩擦时间。使用原子力显微镜（AFM）研究了这些薄膜的表面形态，并根据图像计算了这些薄膜的表面粗糙度。 X射线吸收近边缘结构（XANES）光谱已用于表征这些薄膜的化学性质。磷钾边缘的强度也用于监测这些膜的厚度。磷的L边缘光谱表明，这些薄膜的化学性质略有变化。 31P核磁共振（31P NMR）用于研究渣油中的ZDDP成分。光谱表明，在不同条件下，主要和次要ZDDP的分解都非常不同。这些AW膜的摩擦学特性通过测量摩擦系数和相对面的磨损痕迹宽度来探究。

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