Abstract
The loss of lubricant from the surfaces of critical machine parts often leads to friction and heat-related failures which can cause catastrophic damage to machinery. In this study, the effect of micro- and nano-texturing on lubricant retention was investigated. Micro-textures were produced by sandblasting Cu substrates, while nano-textures were created by aluminum-induced crystallization of amorphous silicon. The topography and the wettability of the textured surfaces were characterized by means of scanning electron microscopy and a video-based optical contact angle measuring system, respectively. The lubricant retention on the textured surfaces was investigated using a dynamic method. It was found that superhydrophilic surfaces created by the combined micro- and nano-texturing technique can significantly enhance the lubricant retention on Cu substrates.
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