硅酸盐粉体作为润滑油添加剂对摩擦副耐磨性的影响研究  

Investigation of the Effects of Lubricant Oil With Silicate Particles as Additive on the Wear Resistance of Friction Pair

作　　者：陈文刚[1] 高玉周[1] 张会臣[1] 许晓磊[1] 于志伟[1] 

机构地区：[1]大连海事大学机电与材料工程学院,辽宁大连116026

出　　处：《中国表面工程》2006年第1期36-39,共4页China Surface Engineering

基　　金：国家自然科学基金资助项目(50472025)

摘　　要：采用MM–200摩擦磨损试验机研究了45#钢–45#钢摩擦副在含蛇纹石硅酸盐油润滑下的摩擦学行为,借助SEM及EDAX测试分析了自修复膜层的表面形貌及表面成分组成。结果表明:润滑油中添加硅酸盐蛇纹石粉体,在摩擦磨损初期,下试样的失重随磨损时间增加而增加;在试验时间为20h时,试样失重达到最大值,随后试样的失重反而减小。在载荷600N、试验时间30h摩擦磨损后,在金属表面形成自修复保护膜,弥补了试样的部分失重;自修复膜层表面比较平整光滑,无明显的磨损划痕和犁沟,自修复膜层阻碍了金属摩擦表面的直接接触,有效地降低了金属摩擦副的磨损;自修复膜层与金属基体结合紧密,无明显的界面,膜层的厚度最大为8μm。The tribological behaviors of 45 steel friction pair were investigated using MM-200 friction and wear tester under lubricated condition with silicate additive. The surface morphologies of self-repairing layer and its chemical composition were analyzed by SEM and EDX. The experimental results showed that the wear mass loss of lower sample increases with time at initial stage, reaches the maximum loss after 20 hours and then decreases with time. The self-repairing layer is formed on the surface of 45 steel at 600N load and 30 hours wear time. The surface of self-repairing layer is very smooth without obvious wear scars compared with that without silicate additive. The self-repairing layer on the surface of 45 steel can avoid the direct contact of two metals, thus decrease wear mass loss effectively and improve the wear resistance of the metallic friction pairs; The self-repairing layer shows a good cohesion with the substrate without obvious interface with the substrate. The maximum depth of the self-repairing layer is about 8 μm.

关 键 词：蛇纹石 硅酸盐 摩擦磨损 自修复 添加剂 

分 类 号：TG115.58[金属学及工艺—物理冶金] TH117.1[金属学及工艺—金属学]