Effect of laser surface texturing on Si3N4/TiC ceramic sliding against steel under dry friction
作者： Youqiang Xing , Jianxin Deng , Xiuting Feng , Sheng Yu
DOI: 10.1016/J.MATDES.2013.05.077
关键词: Finite element method 、 Laser 、 Ceramic 、 Stress concentration 、 Ceramic matrix composite 、 Texture (crystalline) 、 Metallurgy 、 Tribometer 、 Tribology 、 Materials science
摘要: Abstract In efforts to investigate the influence of surface texturing on Si3N4/TiC ceramic, laser (LST) was performed ceramic by an Nd:YAG and different geometrical characteristics regular-arranged micro-grooved textures were fabricated surfaces. The tribological properties textured smooth samples investigated carrying out sliding wear tests against steel balls under dry condition using a ball-on-disk tribometer. Effect stress distribution studied finite element method (FEM). Results show that surfaces exhibited lower friction coefficient excellent anti-wear compared with depended greatly size density micro-grooves, have significant effect behavior. Among patterns investigated, wavy-grooved exhibit lowest rate; large texture may be best for reduction samples. While, rate is larger than FEM results can improve contact interfaces reduce concentration.
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