摘要
基于试验,研究了激光微加工表面的摩擦特性。采用Nd:YAG脉冲激光在Cr12合金钢试件表面加工出圆形凹坑,然后利用环块摩擦磨损试验机研究其对摩擦特性的影响。试验结果表明,和光滑的表面相比,深度为I10.7时,面积比率为5%的凹坑可显著降低摩擦系数,面积比率为17%的凹坑会使摩擦系数变大;面积比率为5%时,深度为I10.7的凹坑可显著降低摩擦系数,深度为I10.2的凹坑使摩擦系数变大;深度为I10.7,面积比率为10%的凹坑以及面积比率为5%,深度为I10.2的凹坑在400 r/min可降低摩擦系数,在200 r/min会使摩擦系数变大。
The tribological property of the laser-textured surface is studied by experiment. The Nd. YAG laser is used to generate micropores on the Cr12 steel surface. Tribological experiments are conducted on a ring-block tribometer. The test results show that compared with the non-textured surfaces,when the depth is 110.7, the micropores with the area density of 5% can reduce the friction coefficient significantly,but it is opposite for the area density of 17%. When the area density is 5%, the micropores with the depth of I10.7 can reduce the friction coefficient significantly, but it is opposite for the depth of I10. 2. When the rolling speed is 400 r/min, the micropores with the depth of I10.7 and the area density of 10% and the micropores with the area density of 5% and the depth of I11. 2 can reduce the friction coefficient, but it is opposite for the rolling speed of 200 r/min.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第10期1581-1584,共4页
Journal of Hefei University of Technology：Natural Science
基金
国家863高技术研究发展计划资助项目(2007aa04z119)
关键词
激光微加工
凹坑
环-块试验机
摩擦特性
.laser-texturing
micropore
ring-block tribometer
tribological property
