凹凸棒石黏土作为润滑油添加剂的摩擦学性能  

Tribological Properties of Attapulgite Clay as Lubricant Additive

作　　者：王利民[1,2] 许一 高飞[2] 于鹤龙[2] 张博[2] 徐滨士[2] 乔英杰[3] 

机构地区：[1]哈尔滨工程大学工程训练中心,哈尔滨150001 [2]装甲兵工程学院再制造技术重点实验室,北京100072 [3]哈尔滨工程大学材料科学与化学工程学院,哈尔滨150001

出　　处：《中国表面工程》2012年第3期92-97,共6页China Surface Engineering

基　　金：国家973计划(2011CB013405);国家自然科学基金(50805146;50904072;51005243);博士后科学基金(20090461452)

摘　　要：采用SRV-IV摩擦磨损试验机考察了凹凸棒石黏土作为润滑油添加剂的摩擦学性能,借助SEM及EDS分析了摩擦表面的微观形貌及元素组成。结果表明,在试验所用的载荷和频率条件下,加入凹凸棒石黏土之后润滑油的摩擦因数和磨损量均有不同程度的降低。固定频率10Hz,当载荷为50N时,平均摩擦因数降低幅度达到了43.08%,当载荷为20N时,上下试样磨损率降低幅度分别达到了59.05%和85.48%。加入凹凸棒石黏土之后磨损表面更加光滑平整,表面氧元素含量升高。这主要归因于凹凸棒石黏土的层链状晶体结构和摩擦过程中复杂的物理化学过程。The tribology properties were investigated on a standard optimal SRV-IV tribometer.The elemental component and morphology on worn surface were analyzed by SEM coupled with EDS.The results show that the friction coefficient and wear rate of the contacts lubricated with the oil contained attapulgite clay decrease more than those lubricated with base oil.The average friction coefficient of the contacts lubricated with the oil contained attapulgite clay decreased by 43.08% than that of the base oil with the load of 50N and the frequency of 10 Hz;the wear rate of the ball and disk decrease by 59.05% and 85.48% at 20 N,10 Hz,respectively.More smooth and compact tribofilm with more oxides forms the worn surface.The layer-chain crystal structure of attapulgite clay and the complex physicochemical in the friction process make the friction and wear of the tribopair decrease.

关 键 词：凹凸棒石黏土 润滑油添加剂 摩擦磨损 自修复 

分 类 号：TE624.82[石油与天然气工程—油气加工工程]