凹凸棒石黏土润滑油添加剂对钢/钢摩擦副摩擦学性能的影响  

Tribological Properties of Attapulgite Clay as Lubricant Additive for Steel-Steel Contacts

作　　者：王利民[1,2] 徐滨士 许一[2] 高飞[2] 于鹤龙[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]装甲兵工程学院装备再制造技术国防科技重点实验室,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：《摩擦学学报》2012年第5期493-499,共7页Tribology

基　　金：国家973计划项目(2011CB013405和2007CB607601);国家自然科学基金项目(5073506;50805146;50904072和51005243);博士后科学基金(20090461452)资助~~

摘　　要：采用天然凹凸棒石黏土作为润滑油添加剂加入150SN润滑油中,在Optimal SRV-IV摩擦磨损试验机上研究了添加剂含量对钢/钢摩擦副摩擦学性能的影响,借助SEM及EDS分析了摩擦副的表面形貌及表面元素组成.结果表明:凹凸棒石黏土的浓度为0.6%可使平均摩擦系数较基础油润滑条件下降低42.32%;凹凸棒石黏土的浓度为0.4%可使磨损体积降低85.48%;凹凸棒石黏土的加入使得磨损表面更加光滑平整,同时磨损表面氧元素含量升高.分析认为凹凸棒石黏土层链状的晶体结构和摩擦过程中复杂的理化过程是实现减磨抗磨的原因.The attapulgite clay powder is dispersed in 150SN mineral oil as lubricant additive. The tribological properties of steelsteel contacts under the lubrication of 150SN base oil with diversity concentration of attapulgite clay powder are investigated on a standard Optimal SRV - IV tribometer. The elemental component and morphology on worn surface are analyzed by using scanning electron microscopy coupled with energy dispersive spectroscopy. The 150SN mineral oil containing 0.6% attapulgite clay reduces friction coefficient to 57.68% and the wear of steel ball lubricated by 150SN mineral oil containing 0.4% attapulgite clay is 14.52% as low as that lubricated by 150SN mineral oil Smooth and compact tribofilm composed of oxides is observed on the worn surface lubricated by 150SN mineral oil containing attapulgite clay. The layer - chain crystal structure of attapulgite clay and the complex physicochemical in friction process are responsible for the reduced friction and wear of the tribopair.

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：TH117.3[机械工程—机械设计及理论]