脉冲激光制备凸貌表面织构方法及其减摩特性分析
首发时间:2018-10-23
摘要:本文提出了一种脉冲激光加工表面织构的方法,通过调节脉冲宽度成型合适大小的微凸单元,并合理配置扫描速度与脉冲频率的参数,制备了不同间距的微凸阵列。对制备的表面织构在润滑充足与均布载荷的情况下进行仿真分析。结果表明:具有合适密度的表面织构相对于光滑表面具有更好润滑减压作用。对不同间距(不同密度)的织构进行摩擦磨损实验。实验结果与仿真基本吻合,在润滑充足的情况下,合适的表面织构具有一定的减摩效果,且当微凸单元的间距为100μm时,织构能达到最优的减摩效果。
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Convex Surface Texture by Pulsed Laser Deposition and friction Property Analysis
Abstract:A method of convex surface texture by laser deposition is presented. By adjusting the pulse width to shape micro-convex elements of suitable size, the micro-convex array with different spacing was prepared. Fluid simulation has been analyzed for the surfaces with texture under sufficient lubrication and uniform load. Results showed that the substrate with proper density had more lubricating and decompression effect. The vertical universal friction and wear tester is used to analyze the friction and wear of the texture with different texture density. The experiments show that, under the condition of sufficient lubrication, the appropriate surface texture has a certain anti-friction effect, and the optimal anti-friction effect can be achieved when the distance between the micro-convex elements is 100μm.
Keywords: texture convex laser processing simulation analysis coefficient of frictionkey
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