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Oleic acid capped PbS nanoparticles: Synthesis, characterization and tribological properties

机译：油酸封端的PbS纳米粒子：合成，表征和摩擦学性能

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摘要

Oleic acid (OA) capped PbS nanoparticles were chemically synthesized and characterized by means of Fourier transform-infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), X-ray electron diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The triboligical properties of the capped PbS nanoparticles as additive in liquid paraffin was investigated using a four-ball machine. The lubricating mechanisms were discussed along with the analyses results of XPS and scanning electron microscope (SEM). Results show that OA-capped PbS nanoparticles, with an average diameter of about 8 nm, are able to prevent water adsorption, oxidation and are capable of being dispersed stably in organic solvents or mineral oil. OA-capped PbS nanoparticles as an additive in liquid paraffin perform good antiwear and friction-reduction properties owing to the formation of a boundary film.
机译：用傅立叶变换红外光谱（FT-IR），透射电子显微镜（TEM），X射线电子衍射（XRD）和X射线光电子能谱（XPS）进行化学合成并表征了油酸（OA）封端的PbS纳米颗粒）。使用四球机研究了封端的PbS纳米粒子在液体石蜡中作为添加剂的摩擦学性能。讨论了润滑机理以及XPS和扫描电子显微镜（SEM）的分析结果。结果表明，平均直径约8 nm的OA封端的PbS纳米颗粒能够防止水吸附，氧化，并且能够稳定地分散在有机溶剂或矿物油中。 OA封端的PbS纳米颗粒作为液体石蜡中的添加剂，由于形成了边界膜，因此具有良好的抗磨和减摩性能。

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