Page 68 - 《摩擦学学报》2021年第2期

第 41 卷 第 2 期 摩 擦 学 学 报 Vol 41 No 2
2021 年 3 月 Tribology Mar, 2021

DOI: 10.16078/j.tribology.2020090

载荷及位移幅值对DLC薄膜微动磨损

行为的影响

景鹏飞, 俞树荣 , 张克菲, 马邦豪
*
(兰州理工大学 石油化工学院，甘肃 兰州 730050)

摘 要: 为了提高TC4钛合金表面的抗微动磨损性能，在本文中采用非平衡磁控溅技术(Unbalanced Magnetron
Sputtering)在TC4钛合金表面沉积了类金刚石(DLC)薄膜. 采用球/平面接触形式研究了DLC薄膜的微动摩擦磨损行
为. 在不同法向载荷和位移幅值下，结合微动运行工况图研究了DLC薄膜滑移状态和损伤机理. 利用原子力显微
镜、纳米压痕仪、激光拉曼光谱仪、激光共聚焦显微镜、场发射扫描电子显微镜和SRV-V微动摩擦磨损试验机等设
备对DLC薄膜进行性能的表征和微动摩擦磨损性能测试. 通过微动图，摩擦耗散能，磨痕形貌、化学成分分析揭示
其损伤机理. 结果表明：载荷和位移幅值对DLC薄膜微动摩擦磨损行为和损伤机理有显著影响. 当位移幅值为25 μm
时，微动运行于混合滑移(mixed slip regime，MSR)情形下，当位移幅值为100 μm时，微动运行于完全滑移(gross slip
regime，GSR)情形下. 小位移幅值时，DLC薄膜磨损机理是磨粒磨损为主；大位移幅值时，DLC薄膜磨损机理是黏着
磨损为主. 干摩擦条件下，DLC薄膜有良好的抗微动磨损性能，关键就在于其优异力学性能和自润滑特性.
关键词: 类金刚石膜; 微动磨损; 微动图; 滑移状态; 损伤机制
中图分类号: TH117.1 文献标志码: A 文章编号: 1004-0595(2021)02–0213–10

Effects of Load and Displacement Amplitude on Fretting

Wear Behavior of DLC Film

*
JING Pengfei, YU Shurong , ZHANG Kefei, MA Banghao

(College of Petrochemical Engineering, Lanzhou University of Technology, Gansu Lanzhou 730050, China)
Abstract: In order to improve the fretting wear resistance of TC4 titanium alloy, diamond-like carbon (DLC) films were
deposited on the surface of TC4 titanium alloy by unbalanced magnetron sputtering (UBMS) technique. The fretting
friction and wear behaviors of DLC film against GCr15 steel ball were studied using a ball-on-flat contact. Under
different normal loads and displacement amplitudes, the slip regime and wear mechanism of DLC film were studied with
the running condition fretting map(RCFM). The characterization and fretting friction and wear performance of DLC
films were carried out by means of atomic force microscopy, nanoindentation, laser Raman spectroscopy, three-
dimensional optical profilometer, laser confocal microscope, field emission scanning electron microscope and SRV-V
fretting friction and wear tester. The damage mechanism was revealed through the analysis of fretting maps, dissipated
energy, the morphology and chemical composition of wear track. The results showed that the displacement amplitude
and normal load had great effect on the fretting mode and damage mechanism. The mixed slip regime (MSR) was
dominant at the displacement amplitude of 25 μm. On the other hand, the slip regime was gross slip regime (GSR) at the
displacement amplitude of 100 μm. The abrasive wear was the main damage mechanism of DLC film under small
displacement amplitude, whereas under larger displacement amplitude the wear mechanism of DLC film was mainly
adhesive wear. In short, the good fretting wear performance of DLC film in dry friction lies in its excellent mechanical
properties and self-lubricating properties.

Received 21 May 2020, revised 15 September 2020, accepted 27 September 2020, available online 28 March 2021.
*Corresponding author. E-mail: yusr@lut.edu.cn，Tel：+86-18709467228.
This project was supported by the National Natural Science Foundation of China(51275225).
国家自然科学基金项目(51275225)资助.