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干摩擦及水润滑下氧化锆-氧化铝层状复合陶瓷的摩擦学行为
作者:周泽华 丁培道 陈蓓 易于 
单位:重庆大学 重庆大学材料科学与工程学院  重庆大学资源及环境科学学院  重庆大学机械工程学院 机械传动国家重点实验室  重庆400044 
关键词:层状陶瓷  摩擦学  断裂韧性  水润滑  干摩擦 
分类号:TQ174
出版年,卷(期):页码:2003,31(4):346-350
DOI:
摘要:
研究了氧化锆 -氧化铝三层结构层状复合陶瓷在干摩擦和水润滑下的摩擦学性能和磨损机制 ,并比较了氧化锆 -氧化铝单层陶瓷在相同条件下的摩擦学性能。结果表明 :相同条件下 ,层状陶瓷的摩擦系数和磨损率均低于单层陶瓷 ,根本原因在于层状陶瓷表面的压应力导致的韧性提高和磨损表面剪切应力的降低。水润滑可以有效地降低复合陶瓷的摩擦磨损 ,主要原因是由于水引起主导磨损机制发生变化 ,由干摩擦时的磨粒磨损和粘着磨损转变为摩擦化学磨损和疲劳磨损
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Tribological behavior and wear mechanism of ZrO 2-Al 2O 3 laminated ceramics under dry friction and water lubrication conditions were studied. It was compared with the tribological behavior of ZrO 2-Al 2O 3 mono layer ceramics under the same conditions. The results show that friction factor and wear rate of laminated ceramics are lower than those of mono layer ceramics under the same conditions. The main reasons of differences are due to the high toughness and low shearing stress in wear surface caused by the compressive stress in surface layer of laminated ceramics. Friction and wear of composite ceramics can be effectively decreased by water lubrication because of the change of the main wear mechanisms caused by water lubrication: from abrasive and adhesive wear under dry friction to tribo_chemical and fatigue wear under water lubrication.
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基金项目:
国家自然科学基金重大项目 (5 9995 44 0 )之子项资助项目
作者简介:
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参考文献:
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