紫外線照射による分子潤滑膜のナノ凹凸テクスチャの形成(機械要素,潤滑,工作,生産管理など)

概要

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To create functionalized tribological surfaces utilizing the effect of nano-textures, we have proposed a method in which nanometer-thick perfluoropolyether lubricant films coated on solid surfaces were irradiated with 172nm ultraviolet (UV) rays through a photo mask in nitrogen atmosphere. By measuring the thickness profiles of the lubricant films at the boundary of non-UV-irradiated and UV-irradiated areas, we found that lubricant molecules in the non-UV-irradiated area spread toward the UV-irradiated area with time and stable concave-convex film structures are obtained at the equilibrium state. We experimentally demonstrated that desirable three-dimensional lubricant textures can be formed using this UV-induced lubricant spreading (lubricant redistribution) phenomenon. The optimum conditions for forming lubricant textures are also discussed.
2006-06-25