基于不同工况下,研究稀土改性对陶瓷纤维增强树脂基制动材料的摩擦学性能的影响.研究结果表明,稀土的加入可有效提高制动材料在不同工况下的摩擦磨损性能;稀土改性试样在干摩擦条件下,摩擦因数大体上随着载荷的增加而减小,随速度的增加而增大,试样磨损量随着载荷与速度的增加而增大;水润滑情况下,摩擦因数随速度与载荷变化规律大体与干摩擦条件下相反,而试样磨损量随着载荷与速度变化不明显;稀土的加入可提高制动材料在雨涉水情况下的制动稳定性;随着工况条件的变化,磨损形式的主次会变化不同,一种磨损发生后往往诱发其他形式的磨损,进而影响制动材料的摩擦磨损性能.
The effect of rare earth modification on tribological performance of resin matrix brake materials under different working conditions was studied.The results show that the friction and wear properties of the brake materials can be improved by adding rare earth under different working conditions.The tribological performance of the brake materials is closely related to the load and velocity.In the dry friction condition,the friction coefficient of the samples decreases with the increasing of the load,and increases with the increasing of the velocity.The wear loss of the samples increases with the increasing of the load and velocity.In the water lubrication condition,the friction coefficient varies with the load and velocity,which is contrary to the dry friction condition,while the wear loss of the samples is not obvious with the change of load and velocity.The braking stability of the brake materials can be improved by adding rare earth under water condition.With the change of working conditions,the primary and secondary wear forms are different,and one wear form usually induces other wear forms,which further affects the friction and wear properties of the brake materials.
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