纳米烟炱颗粒作为添加剂在激光刻蚀织构表面的摩擦学性能

Tribology Behavior of Diesel Sootas Oil Additive on Laser Etching Textured Surface

通过激光刻蚀法制备不同织构表面,在UTM-2摩擦磨损试验机上,采用球-面接触方式往复运动,考察了纳米烟炱颗粒作为润滑油添加剂的摩擦磨损性能。借助高分辨透射电镜、3维轮廓仪、扫描电镜和拉曼光谱仪等测试设备,分析了其纳米烟炱颗粒在织构表面的摩擦学机理。结果表明:部分织构会增加摩擦系数,但磨损率却显著减小;织构的面积率越高,抗磨性能越优异。纳米烟炱颗粒加入后,试样的磨损明显减轻,这归因于烟炱颗粒的自润滑性能以及织构微坑储存纳米颗粒、润滑油的功能。表面织构与纳米烟炱颗粒的共同耦合作用展现出了优异的抗磨减摩性能。

Varied texturing surfaces were manufactured in tested plates surface though laser etching technology. The tribology performance of nano-diesel soot( DS) as a lubricant additive on the textured surface was investigated in the UTM-tribometer with a ball against plate contact model. The tribological results were analyzed by the HR-TEM,3D-profiler,SEM and Raman spectroscopy analysis method.The results showed that friction coefficient increased due to the micro-texture,but the materials wear loss obviously decreased. The samples with higher area ratio showed a better anti-wear performance. The adding of diesel soot contributed significantly reduced the friction and wear. This was attributed to the self-lubricity property of the diesel soot and the storage function of the micro-texture. The combination action of surface texture and diesel soot additive showed an excellent anti-wear property.