氧化铝陶瓷在海水润滑下的摩擦学行为研究  

Tribological Behavior of Alumina Ceramic under Lubrication of Seawater

作　　者：刘宁[1,2] 王建章[1] 陈贝贝[1,2] 杨杰[1,2] 阎逢元[1] 

机构地区：[1]中国科学院兰州化学物理研究所固体润滑国家重点实验室,甘肃兰州730000 [2]中国科学院大学,北京100049

出　　处：《润滑与密封》2013年第5期55-59,共5页Lubrication Engineering

基　　金：国家自然科学基金项目(50823008)

摘　　要：采用UMT-3摩擦实验机研究氧化铝陶瓷在海水润滑条件下的摩擦学行为,并与其在干摩擦和纯水润滑条件下的摩擦学行为进行比较。利用扫描电子显微镜和X-射线光电子能谱观察并分析氧化铝陶瓷磨损表面形貌以及磨损表面主要元素的化学状态,探讨氧化铝陶瓷在海水中的摩擦化学特性。结果表明,氧化铝陶瓷在干摩擦时具有最大的摩擦因数和最小的磨损率,在海水润滑条件下具有最小的摩擦因数和最大的磨损率,这是氧化铝在海水中发生了摩擦化学反应的结果。氧化铝陶瓷在干摩擦时的磨损主要表现为轻微的脆性剥落,在纯水润滑条件下表现为严重的脆性剥落,而在海水润滑条件下表现为摩擦化学磨损以及极轻微的脆性剥落。Tribological behaviors of alumina ceramic under seawater lubrication were investigated UMT-3 friction test- er, and compared with those under dry friction and pure water lubrication. The tribo-chemical properties of alumina ceram- ic in seawater were discussed by observing its worn surfaces morphology using scanning electron microscopy （SEM） and determining the chemical states of elements on the worn surface using X-ray photoelectron spectroscopy （XPS）. Results show that the alumina ceramic has the highest friction coefficient and the lowest wear rate under dry friction condition, and the lowest friction coefficient and the highest wear rate under seawater lubrication, which is due to the tribo-chemical reac- tion of A12 03 occurred in seawater. The wear mechanism is slight brittle spalling under dry friction condition, serious brittle spalling under pure water lubrication, tribo-chemical wear and rarely brittle spalling under seawater lubrication.

关 键 词：氧化铝陶瓷 海水润滑 摩擦化学 磨损 

分 类 号：TH117.2[机械工程—机械设计及理论]