不同形貌碳基纳米材料的添加对冷冻机油摩擦学性能的影响  

Effect of Different Morphology Carbon-Based Nanomaterials Addition on Tribological Properties of Refrigeration Oil

作　　者：邓巧 邢美波 孙非凡 王瑞祥 DENG Qiao;XING Meibo;SUN Feifan;WANG Ruixiang(Beijing Engineering Research Center of Sustainable Energy and Buildings,School of Environment and Energy Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China)

机构地区：[1]北京建筑大学环境与能源工程学院,北京市建筑能源高效综合利用工程中心,北京100044

出　　处：《机械工程材料》2024年第7期34-40,共7页Materials For Mechanical Engineering

基　　金：联合国基加利多变基金资助项目(FECO/LY1/S/20/310);北京建筑大学培育项目专项资金资助项目(X23041)。

摘　　要：在冷冻机油中添加零维球形富勒烯(CB)、一维碳纳米管(CNTs)、二维层状石墨烯(GE)3种不同形貌的碳基纳米材料制备纳米冷冻机油,研究了在含不同质量分数(0.01%~0.10%)碳基纳米材料冷冻机油润滑条件下钢球-钢盘摩擦副的摩擦因数以及钢盘磨损行为。结果表明:随着碳基纳米材料添加量的增加,平均摩擦因数呈先降低后升高的趋势,磨损体积基本呈先升后降再升的趋势。当零维球形CB、一维CNTs、二维层状GE的质量分数分别为0.02%,0.05%,0.02%时,摩擦副的平均摩擦因数最小,分别比纯冷冻机油润滑条件下减小了约10%,12%,12%,零维球形CB降低摩擦因数的能力较弱,而一维CNTs和二维层状GE的能力较强,且较低含量二维层状GE可以达到较高含量一维CNTs的减摩效果。当零维球形CB、一维CNTs、二维层状GE的质量分数分别为0.02%,0.03%~0.05%,0.02%~0.05%时,磨损体积均最小,分别比纯冷冻机油润滑条件下减小了约59%,8%,36%。二维层状GE的综合减摩效果最佳,在添加GE的冷冻机油润滑条件下摩擦副的摩擦因数变化最平稳,磨损体积较小。Nano refrigerating oil was prepared by adding three kinds of carbon-based nanomaterials with different morphology,namely zero-dimensional spherical fullerenes(CB),one-dimensional carbon nanotubes(CNTs)and twodimensional layered graphene(GE).The change of friction coefficient of steel ball and steel disc friction pair and wear behaviors of steel disk under the lubrication condition of refrigerated oil with different mass fractions(0.01%‒0.10%)of carbon-based nanomaterials was studied.The results show that with the increase of the content of carbon-based nanomaterials,the average friction coefficient decreased first and then increased,and the wear volume basically first increased,then decreased and then increased.The average friction coefficients of the friction pairs were the smallest when the mass fractions of zero-dimensional spherical CB,one-dimensional CNTs,and two-dimensional layered GE were 0.02%,0.05%,and 0.02%,which were reduced by 10%,12%,and 12%compared with those under the pure refrigerated oil lubrication condition,respectively.The ability of zero-dimensional spherical CB to reduce the friction coefficient was weak,while the ability of one-dimensional CNTs and two-dimensional layered GE was strong,and a lower content of two-dimensional layered GE could achieve the antifriction effect of a higher content of one-dimensional CNTs.When the mass fractions of zero-dimensional spherical CB,one-dimensional CNTs and two-dimensional layered GE were 0.02%,0.03%‒0.05%and 0.02%‒0.05%,the wear volumes were the smallest,which were reduced by about 59%,8%and 36%compared with those under the pure refrigerated oil lubrication condition,respectively.The twodimensional layered GE had the best comprehensive anti-friction effect,and the friction coefficient of the friction pair was the most stable and the wear volume was small under the condition of refrigeration oil lubrication with GE.

关 键 词：纳米冷冻机油 富勒烯 石墨烯 碳纳米管 摩擦因数 磨损体积 

分 类 号：TB65[一般工业技术—制冷工程] TB612TB652