摘要
外加电场可以显著改变铁磁流体的摩擦系数 ,本文利用销—盘试验机进行了研究 ,结果表明 :加电场作用前后BH - 1铁磁液体的摩擦系数相对变化率与电流强度关系密切 ,而对法向载荷、线速度和添加剂含量的变化不敏感。在正反电场的作用下 ,摩擦系数的最大变化率可达到 35 % ,而且变化过程具有可逆性。在研究电场对铁磁流体摩擦系数变化的影响的基础上 ,探讨了电流产生的静电场和磁场对摩擦系数的作用机理。
The friction coefficient of ferromagnetic fluid was changed evidently by applied electric fieldExperiment was conducted in pin-on-disk tribometer under boundary lubrication region lubricated with ferromagnetic fluid added with an additiveThe experimental results show that the variation of friction coefficient has a close relation to the applied electric current intensity, while it is not sensitive to normal load, linear velocity and content of additiveThe friction coefficient can be changed by 35 percent in the presence of electric currents in opposite directionsThe transition of the friction was reversibleBased on the investigation of the effect of electric field on friction coefficient, authors proposed the acting mechanism on friction coefficient by electrostatic field and magnetic field, which were derived from the applied current
出处
《润滑与密封》
EI
CAS
CSCD
北大核心
2000年第4期24-26,共3页
Lubrication Engineering
