温度对Al_2O_3/ZrB_2/ZrO_2复合材料摩擦磨损特性的影响

Effect of temperature on friction and wear performance of Al_2O_3/ZrB_2/ZrO_2 composite materials

采用UMT-2多功能摩擦实验机,研究了温度对Al2O3/ZrB2/ZrO2复合刀具材料摩擦磨损性能的影响,并分别使用白光干涉仪和扫描电镜分析实验后磨痕的轮廓和微观形貌。结果表明,常温摩擦时,随着ZrB2/ZrO2含量的增加,AZ系列自润滑陶瓷材料与硬质合金对摩时的摩擦系数逐渐降低。高温摩擦时,随着环境温度的提高,表面摩擦温度不断上升,生成的润滑膜有助于使摩擦系数和磨损率下降。

Effect of temperature on friction and wear performance of Al2O3/ZrB2/ZrO2 composite materials was investigated on a UMT-2 multi-function friction tester. White light interferometer and scanning electronic mi- croscope were adopted to observe the profile and micro-morphology of the worn surface of specimens. The re- sults showed that. in the room temperature friction test, the increasing of the ZrB2/ZrO2 volume content can decrease the friction coefficient of AZ series composites; in the high temperature friction test, the surface tem- perature increased as the environmental temperature rise, the generated lubricating film can decrease the friction coefficient and wear rate of the composites.