(洛阳工学院 材料科学与工程系, 洛阳 471039)
摘 要: 借助SRV高温摩擦磨损试验机、SEM及能谱分析仪研究了Al2O3p/ZA27复合材料的高温摩擦磨损特性。结果表明: 在边界润滑条件下，Al2O3p/ZA27复合材料的高温磨损质量损失较ZA27合金降低0.00534g; 摩擦因数随着增强颗粒体积分数的增加而降低,当增强颗粒的体积分数由10%增加到30%时, Al2O3p/ZA27复合材料的摩擦因数由0.142降低到0.132, 但均高于ZA27合金。其高温失效形式为犁削和疲劳磨损。
关键字: Al2O3p/ZA27复合材料; 高温；摩擦磨损
Al2O3/ZA27 composites at
elevated temperature
（Department of Materials Science and Engineering,
Luoyang Institute of Technology, Luoyang 471039, China）
Abstract:The friction and wear behaviors of Al2O3p/ZA27 composites at elevated temperature were investigated with SRV friction and wear testing machinery, SEM and EDS in the present work. Results show that the mass lose of Al2O3p/ZA27 compo sites worn under the condition of boundary lubrication at 150℃ decreases by 0.00534g in comparison with the matrix ZA27 alloy. The friction coefficient of Al2O3p/ZA27 composites at 150℃ decreases with increasing the volume fraction of ceramic particle, i.e. Al2O3p. When the volume fraction of ceramic particle ranges from 10% to 30%, the friction coefficient of the composites at 150℃ will be low ed from 0.142 to 0.132 which are all more than that of ZA27 alloy. The failure modes of friction and wear of the composites at elevated temperature are all plowing groove and fatigue stripping.
Key words: Al2O3p/ZA27 composites；elevated temperature; friction and wear
