Friction and Wear Properties of ZrO2 Ceramic Pairs Lubricated by Dimethyl Silicone Oil
The anti-friction and anti-wear properties of ZrO2 ceramic ball were investigated under the lubrication of dimethyl silicone oil blended with base oils(CTL3,150N,GTL430 and PAO4)using a four-ball tribometer,and the worn surface morphologies of ZrO2 ceramic ball was characterized by 3D optical profilers(3D OP).The effect of base oil blending ratio on kinematic viscosity and density of dimethyl silicone oil was analyzed.It was found that the COF and WSD increased at first and then kept steady with the increase of dynamic viscosity when lubricated by dimethyl silicone oil,the COF and WSD reached the minimum value when lubricated by CTL3,and the COF and WSD decreased at first and then increased with the increase of blending ratio when lubricated by dimethyl silicone oil with CTL3.The wear depth and surface roughness of ZrO2 ceramic ball lubricated by dimethyl silicone oil with 5%volume fraction CTL3 decreased by 31.6%and 25.3%,respectively,compared to those of the dimethyl silicone oil.The kinematic viscosity and density of dimethyl silicone oil decreased with the increase of blending ratio,and the kinematic viscosity and density of dimethyl silicone oil with 5%volume fraction CTL3 at 20℃decreased by 6.2%and 0.86%,respectively,compared to those of the dimethyl silicone oil.Base oil could significantly promote the friction and wear properties of ZrO2 ceramic pairs,however,it also had obvious influence on its kinematic viscosity and density.
Dimethyl silicone oilZirconia ceramicStabinger viscometerAnti-wear and anti-friction properties
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