飛秒激光制備不銹鋼表面微型構(gòu)造及其摩擦性能研究
[Abstract]:A regular micro structure was prepared on the surface of 0Cr18Ni9 stainless steel by femtosecond laser with wavelength of 1 030nm. The dry friction experiment was carried out by HT-500 high temperature friction and wear machine. The surface morphology and depth of micropores were observed by color 3D laser scanning microscope and SEM. The results show that the femtosecond laser can produce fine micropores. In the dry friction and wear experiments under the same conditions, the friction coefficient of the micro-structured materials is smaller than that of the unmachined materials. When the load is 5N and the sliding velocity is 0.075 ~ 0.018 7m/s, the friction coefficient of the micro-structure with an area ratio of about 10% is reduced by 15.8% and 40.4% than that of the untreated surface. When the load is 9N and the sliding velocity is 0.075 ~ 0.018 7m/s, the friction coefficient of the micro-structure with an area ratio of about 10% is 19.3% and 24.7% lower than that of the untreated surface. It is found that the friction coefficient of the surface with the diameter of 60 渭 m is lower than that of the surface with the diameter of 28 渭 m. When the load is 5N and 9N, respectively, The friction coefficient of microstructures with area ratio of about 10% and 20% is the lowest, and the wear mechanism is mainly adhesive wear and abrasive wear.
【作者單位】: 廣東省微納光子功能材料與器件重點實驗室;
【基金】:2013廣東省研究生教育創(chuàng)新計劃資助項目(項目編號:2013JDXM23) 廣東省省級科技計劃資助項目(項目編號:2013B090600045)
【分類號】:TG665;TG142.71
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