OTS自组装分子膜改性处理钛金属的摩擦学特性研究  

Studies on Tribological Properties of Titanium Modified by Octadecyltrichlorosilane Self-Assembled Monolayers

作　　者：孙昌国[1] 张会臣[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》2007年第5期23-26,共4页China Surface Engineering

基　　金：国家自然科学基金(50275015)

摘　　要：采用自组装技术对钛金属表面进行改性处理,并对制备的试样进行紫外照射;用原子力显微镜对试样的表面形貌进行表征;用微摩擦磨损试验机测试OTS自组装分子膜改性处理的钛金属表面的摩擦学特性,并研究了紫外照射处理的影响。结果表明:经OTS自组装分子膜改性处理的钛金属表面平整均匀,且摩擦学特性显著改善,摩擦因数小于钛基底;紫外照射可有效地提高OTS自组装分子膜改性处理的效果,减小了有机杂质的粘着效应;钢球与OTS自组装分子改性处理试样间的摩擦因数随载荷的增大而增大,这取决于边界润滑膜是否发生失效。The surface of Titanium was modified by self-assembling method and the prepared samples were irradiated by ultraviolet radiation/ozone photochemical process. The sample surface was characterized by atomic force microscopy （AFM） The tribological properties of titanium surface modified by OTS SAMs and the effect of ultraviolet radiation/ozone photochemical process were explored by micro-tribometer. The experimental results showed that titanium surface modified by OTS SAMs is uniform and possesses a good tribological properties, the friction coefficient is lower than that of titanium substrate. Ultraviolet radiation/ozone photochemical process can improve the effect of modification treated by OTS SAMs and reduce the adhesion of organic impurity. The friction coefficient between steel ball and titanium surface modified by OTS SAMs increases with load increasing, which depends on whether the boundary lubricating film is failed or not.

关 键 词：自组装单分子膜 钛 紫外照射 摩擦 

分 类 号：TB324[一般工业技术—材料科学与工程]