摘要
采用摩擦磨损试验机研究了凹凸棒石粉体作为润滑油添加剂对钢–钢摩擦副的减摩抗磨性能,采用扫描电子显微镜和能量色散谱仪分析了磨损表面的微观形貌及元素组成,采用三维轮廓测量仪测量了磨痕宽度和体积,探讨了凹凸棒石粉体的减摩抗磨机理。结果表明:在润滑油中添加0.5%(质量分数)以上的凹凸棒石粉体时,能显著降低钢–钢摩擦副的摩擦系数。添加量为1.0%时具有最佳的减摩抗磨性。通过摩擦物理和摩擦化学作用,凹凸棒石粉体在磨损表面形成光滑平整的修复层,从而提高摩擦副的摩擦学性能。
The antifriction and antiwear performance of attapulgite powder as an antifriction and repairing material for steel-steel frictional pair was investigated by a friction and wear tester. The morphology and elemental composition of worn surfaces were ana- lyzed by scanning electron microscopy and energy dispersive spectrometry, respectively. The width and volume of grinding crack were measured by the three dimensional profile measuring apparatus. The antifriction and repairing mechanism of attapulgite powder as a lubrcant in oils was discussed. The result shows that attapulgite can reduce the friction coefficient of the steel-steel pair when the addition of attapulgite is 〉 0.5% （in mass）. Attapulgite exhibited the optimal antifriction and antiwear properties at the addition of 1.0% （in mass）. A smooth repairing layer could be formed on worn steel surface due to tribochemical reactions, consequently im- proving the tribological property of the steel-steel frictional pair.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2013年第6期836-841,共6页
Journal of The Chinese Ceramic Society
基金
国家重点基础研究发展规划(2011CB013405)
国家自然科学基金青年科学基金(50904072
50805146
51005243)
中国博士后科学基金面上项目(20090461452)和中国博士后科学基金(201003796)资助
关键词
凹凸棒石
添加剂
摩擦学性能
attapulgite
additive
tribological property
