【摘要】 研究了等静压石墨和碳石墨在干摩擦和水润滑条件下的摩擦学性能.采用销-盘摩擦磨损试验机进行等静压石墨和碳石墨的摩擦学实验.通过摩擦系数和磨损率来评估两类材料的摩擦学性能,通过磨损形貌来分析其磨损机理.实验结果表明,在干摩擦条件下,等静压石墨的摩擦系数大于碳石墨的摩擦系数,而等静压石墨的磨损率低于碳石墨的磨损率.在水润滑条件下,等静压石墨的摩擦系数和磨损率明显降低.等静压石墨的磨损形式主要是磨粒磨损,碳石墨的磨损形式主要是剥落磨损.最后,系统地分析了等静压石墨在干摩擦和水润滑条件下的磨损机理.更多还原

【Abstract】 The tribological properties of isostatic graphite and carbon graphite under dry sliding and water lubricated conditions were studied. The friction test was conducted by using a pin-on-disc tribometer. The friction coefficient and the wear rate were employed to evaluate the tribological performances of the two materials, and wear morphology was used to analyze the wear mechanism. The results show that the friction coefficient of the isostatic graphite is larger than that of the carbon graphite under the dry sliding condition, and the wear rate is lower than that of the carbon graphite. Under the water lubricated condition, the friction coefficients and the wear rates of the isostatic graphite decrease obviously. The main wear form of the isostatic graphite is abrasive wear, while the main wear form of the carbon graphite is spalling wear. Finally, the tribological mechanism of the isostatic graphite under dry sliding and water lubricated conditions were systematically analyzed.更多还原