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An investigation on the lubrication effectiveness of MoS2 and BN layered materials as oil additives using block-on-ring tests

机译:使用块环试验研究MOS2和BN分层材料作为油添加剂的润滑效能

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摘要

The commonly accepted interlayer shear mechanism for layered materials as oil additives remains a challenge with the emergence of two-dimensional materials. In this work, the lubrication effectiveness of MoS2 and BN nanosheets with a similar size was investigated as oil additives using block-on-ring tests. BN nanosheets reveal remarkable anti-wear performance and a reduction of wear depth of about 50%, whereas, the expected friction and wear reduction were not found for MoS2 nanosheets. X-ray photoelectron spectroscopy (XPS) investigation indicates the generation of boron-based tribofilm for BN nanosheets and MoS2-complex tribofilm for MoS2 nanosheets. Together with the thermal stability analysis, we found that it is the high strength tribofilm with high oxidation resistance, but not the layer structure, that plays a critical role in lubrication enhancement. This study highlights the advance of 'depositing tribofilm' mechanism in novel additive design.
机译:作为石油添加剂作为二维材料的出现仍有普遍接受的层状剪切机制仍然是挑战。 在这项工作中,研究了MOS2和BN纳米片具有相似尺寸的润滑效果作为使用块状环试验作为油添加剂。 BN Nanosheets揭示了卓越的抗磨性能,减少磨损深度约为50%,而找不到MOS2纳米片的预期摩擦和磨损。 X射线光电子能谱(XPS)研究表明,对于MOS2纳米片的BN纳米片和MOS2 - 复杂的呋喃代族硼的呋喃呋喃。 与热稳定性分析一起,我们发现它是具有高抗氧性抗性的高强度呋喃木,但不是层结构,在润滑增强中起着关键作用。 本研究突出了新型添加剂设计中“沉积呋散”机制的进展。

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