Keywords Lubricating Oils, Contaminants, Colorimetric Theory, Pigments
The Expected Laws on the Change of Colors of Contaminants of Used Lubricating Oils
There are many colorful things around us. We want to see and touch beautiful things. When we talk about colors on tribology, we will immediately think of colors of oils. But contaminants in used lubricating oils are dirty. Therefore we do not want to touch them. Even such contaminants have color but we do not pay any attention to colors of contaminants.
Authors and Company/Institution Akira Sasaki, Maintek Consultant, Yokohama Japan
Kenji Matsumoto, Honda R&D. Co., Ltd. Utsunomiya, Japan Tomomi, Honda, University of Fukui, Fukui, Japan Yoshiro, Iwai, University of Fukui, Fukui, Japan