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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Bismuth nanoparticles synthesized by laser ablation in lubricant oils for tribological tests
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Bismuth nanoparticles synthesized by laser ablation in lubricant oils for tribological tests

机译：激光烧蚀在润滑油中合成的铋纳米粒子，用于摩擦学测试

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摘要

The improvement of the tribological properties of mineral base oils through the addition of bismuth nanoparticles as an additive, together with the idea of obtaining lubricants free of heavy metals, was evaluated. Bismuth nanoparticles were produced directly in the heavy and light viscosity mineral base oils (BS900 and BS6500) using the technique of laser ablation of solids immersed in liquids. Transmission electron microscopy Measurements showed the presence of pure bismuth nanoparticles. Small Angle X-ray Scattering (SAXS) measurements showed that the average size of the nanoparticles was between 7 and 65 nm depending on the experimental conditions used. The tribological properties of the base oil with the bismuth nanoparticles additives were evaluated using a four-ball tester. Tests were performed using the base oil with and without Bi nanoparticles. It was observed that the coefficient of friction of the oil decrease with an increasing concentration of the nanoparticles. The results also showed that the wear rate was reduced when the Bi nanoparticle additives were used. (C) 2014 Elsevier B.V. All rights reserved.
机译：评估了通过添加铋纳米粒子作为添加剂来改善矿物基础油的摩擦学性能，以及获得不含重金属的润滑剂的想法。铋纳米颗粒是使用浸没在液体中的固体进行激光烧蚀技术直接在高粘度和低粘度矿物基础油（BS900和BS6500）中生产的。透射电子显微镜测量显示纯铋纳米粒子的存在。小角X射线散射（SAXS）测量表明，取决于所用的实验条件，纳米粒子的平均尺寸在7到65 nm之间。使用四球测试仪评估了具有铋纳米粒子添加剂的基础油的摩擦学性能。使用具有和不具有Bi纳米颗粒的基础油进行测试。观察到，油的摩擦系数随着纳米颗粒浓度的增加而降低。结果还表明，当使用Bi纳米颗粒添加剂时，磨损率降低。 （C）2014 Elsevier B.V.保留所有权利。

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