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Micro/Nano-Texture Design for Improving Tribological Properties of DLC-IL Composite Films

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In the present paper, a new synergy lubricating system including both of surface morphology and chemical modification was presented to improve the tribological performances of DLC film. DLC-IL composite films with well-defined micro/nano-textures were produced by the combination of ICP technology, magnetron sputtering process and dip-coating method. At first, a two step method was used: silicon wafers were ICP patterned and subsequently DLC films were deposited on them. The second considered approach was the chemical modification of coated surfaces with IL film. In order to understand the lubrication mechanism of such functional surfaces, experimental research such as AFM, XPS, Raman, Nano-indentation and UMT-3 tests were carried out to investigate systemically the surface morphology, surface structure, chemical composition and mechanical properties of as-prepared DLC-IL composite films. Results showed that micro/nano-patterned DLC-IL composite films used special micro/nano-textures and surface chemical modification to construct the functional surfaces to achieve the super tribological performance. DLC-IL textured film with dense dimples and further chemically modified with IL monolayer showed significantly enhanced micro/nano-tribological performance compared with DLC-IL textured surface with sparse dimples without chemical modification.
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Document Type: Short Communication

Publication date: September 1, 2012

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  • Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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