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将纳米氮化钛颗粒分散到水基础液中,加入适量的分散剂,采用两步法可制备出具有良好分散稳定的水基纳米氮化钛流体。在此基础上,采用单一变量法,用M-200磨损试验机研究了这种纳米流体对钢环的磨损性能,并对其摩擦润滑机理进行了分析。结果表明:摩擦系数与磨损量随负荷的增加表现出先减小后增大的趋势,并且当质量分数为1%的PVP与CTMAB混合液作为分散剂、粒径为20nm且质量分数为1%的氮化钛颗粒、分散介质为去离子水时表现出最佳的润滑性能。
The nano-titanium nitride particles dispersed in the water base fluid, adding an appropriate amount of dispersant, using two-step method can be prepared with good dispersion stability of the water-based titanium nitride fluid. On this basis, the wear behavior of the nanofluid on the steel ring was studied by M-200 wear tester using single variable method. The friction lubrication mechanism was also analyzed. The results show that the friction coefficient and wear amount decrease firstly and then increase with the increase of load, and when the mass fraction of PVP and CTMAB is 1%, the particle size is 20nm and the mass fraction is 1% Titanium nitride particles, the dispersion medium is deionized water showed the best lubrication.