Improving tribological properties of titanium alloys by combining laser surface texturing and diamond-like carbon film
Improving tribological properties of titanium alloys by combining laser surface texturing and diamond-like carbon film
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激光表面毛化与类金刚石碳膜相结合提高钛合金的摩擦学性能
DOI：
10.1016/j.triboint.2014.09.017
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发表时间：
2015-02-01
影响因子：
6.2
通讯作者：
Hu, Litian
中科院分区：
文献类型：
--
作者：
He, Dongqing;Zheng, Shaoxian;Hu, Litian
钛合金的特点是摩擦学性能差，其常规应用一直局限于非摩擦学应用。表面成膜和表面织构化是改善滑动表面摩擦学性能的有效方法。采用激光表面毛化技术和磁控溅射技术分别在钛合金表面制备了不同密度的微坑图案和类金刚石薄膜。研究了在干摩擦和液体润滑条件下，韧窝密度和类金刚石相转变对钛合金摩擦学性能的影响。结果表明，适当凹坑面积密度（44%）的DLC膜能有效地提高钛合金基体的减摩性能，这是由于在滑动过程中凹坑中磨损颗粒的捕获和凹坑诱导的石墨化，而24%织构试样具有优异的耐磨性。(C)2014爱思唯尔有限公司版权所有。
Titanium alloys are characterized by poor tribological performance, and their conventional use has been restricted to non-tribological applications. Surface films and surface texturing are effective methods to improve the tribological properties of sliding surfaces. In this study, the patterns of micro-dimples with different densities and diamond-like carbon (DLC) films were fabricated on the surface of titanium alloy by laser surface texturing and magnetron sputtering, respectively. The effects of dimple densities and DLC phase transformation on the tribological behavior of the titanium alloy under dry friction and liquid lubrication conditions were investigated. The results showed that DLC film with appropriate dimple area density (44%) are effective in enhancing reducing-friction property of titanium alloy substrate because of the entrapment of wear particles in the dimples and dimple-induced graphitization during sliding motions, while the 24% textured specimen exhibited outstanding wear resistance. (C) 2014 Elsevier Ltd. All rights reserved.