Ordered molecular layer structure of lubricating oil adsorbed films

来源期刊：中国有色金属学报(英文版)2001年第1期

论文作者：毛大恒 王蔚娟 谭建平 成钧

文章页码：58 - 62

Key words：LB film; surface adsorbed film; molecular arrangement structure; lubricity

Abstract: Low-angle X-ray diffraction has been applied to analyze the structure of stearic acid LB films and self-grown surface adsorbed films of aluminium product metalworking lubricants. The results show that LB films exhibit a good layer like ordered structure in the normal direction of film-carrying surface, while in the tangential direction, they do not show a cyclically ordered molecular arrangement; as for the self-grown surface adsorbed films of aluminium sheet and strip metalworking lubricants, their molecules are orderly arranged to certain degree in both the tangential and the normal directions of film-carrying surface, and they have a short-range ordered structure. Moreover, the better the orientation of normal molecules is, the higher the oil film strength is, and the smaller the friction factor is.