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纳米金刚石在润滑油中的分散及其摩擦学性能研究

发表时间:2018-07-31  浏览量:1228  下载量:244
全部作者: 吴凯,李川,吴波,凤维民,胡献国
作者单位: 合肥工业大学摩擦学研究所
摘 要: 为改善纳米金刚石在润滑油中的分散特性,提高其摩擦学性能,研究探讨了对纳米金刚石进行改性处理的方法与工艺。通过静置法考察改性纳米金刚石在润滑油中的分散特性,采用四球摩擦磨损试验机考察其摩擦学性能,利用Zeta电位仪和傅里叶红外光谱(Fourier transform infrared spectroscope,FTIR)比较了改性前后纳米金刚石粉末的颗粒尺寸与表面官能团,并使用扫描电子显微镜(scanning electron microscope,SEM)及能谱仪(energy dispersive spectroscopy,EDS)对磨斑表面进行表征。结果表明,改性后纳米金刚石粒度明显减小,表面官能团增加,在润滑油中表现出优异的稳定分散性。改性纳米金刚石粒径较小,更易进入到摩擦副间形成滚珠润滑,提高了润滑油的抗磨减摩性能。
关 键 词: 机械设计;润滑油;分散性;摩擦学性能
Title: Study on dispersion and tribological properties of nanodiamond in lubricating oil
Author: WU Kai, LI Chuan, WU Bo, FENG Weimin, HU Xianguo
Organization: Institute of Tribology, Hefei University of Technology
Abstract: In order to improve the dispersion property of nanodiamond in lubricating oil and optimize its tribological properties, the modification methods and process of nanodiamond were discussed in this paper. The dispersion characteristics of modified nanodiamond in lubricating oil were investigated by static observation method. The tribological properties of modified nanodiamond were investigated by four-ball friction and wear tester. The particle size and surface functional groups of nanodiamond powders before and after modification were analyzed and compared by Zeta potentiometer and Fourier transform infrared spectroscope (FTIR). The surface of grinding spot was characterized by scanning electron microscope (SEM) and energy dispersive spectroscopy (EDS). The results showed that the particle size of modified nanodiamond decreased significantly and the surface functional groups increased. The modified nanodiamond showed excellent stability and dispersion in the lubricating oil. The modified nanodiamond had smaller particle size and was easier to enter into the friction pairs to form ball lubrication, which improved the anti-wear and antifriction properties of the lubricating oil.
Key words: mechanical design; lubricating oil; dispersion; tribology property
发表期数: 2018年7月第14期
引用格式: 吴凯,李川,吴波,等. 纳米金刚石在润滑油中的分散及其摩擦学性能研究[J]. 中国科技论文在线精品论文,2018,11(14):1420-1426.
 
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