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在十二烷基硫酸钠水溶液润滑条件下,利用球盘摩擦试验机研究了滑动速度及载荷对正向、反向和开路3种电压控制模式下ZrO2球/不锈钢盘的电控摩擦行为的影响.结果表明:在正向控制电压和开路模式下,摩擦系数均随滑动速度增加而迅速降低,但开路模式下的摩擦系数显著低于正向控制电压时的摩擦系数;而在较低的反向电压作用下,摩擦系数低于前两种控制模式下的值,并且随速度降低或载荷升高变化很小,保持了较低的摩擦系数.基于不同电压控制模式下十二烷基硫酸根阴离子在摩擦表面上的不同吸附行为对所观测到的摩擦行为进行了机理分析和解释.
The effects of sliding velocity and load on the electronically controlled friction behavior of ZrO2 ball / stainless steel plate under three kinds of voltage control modes of forward, reverse and open circuit were studied by the ball-plate friction tester under the lubrication condition of sodium dodecyl sulfate aqueous solution. The results show that the friction coefficient decreases rapidly with the increase of sliding velocity in the forward control voltage and the open mode, but the friction coefficient in the open mode is significantly lower than the friction coefficient in the forward control voltage. Under the action of voltage, the friction coefficient is lower than that of the former two control modes, and with the decrease of speed or load, the change of friction coefficient is very small, and the friction coefficient is kept low. Based on the different voltage control modes of lauryl sulfate The different adsorption behaviors of anions on the frictional surface have analyzed and explained the observed frictional behavior.