铝合金基底微碳球作为润滑油添加剂的摩擦学性能及其润滑机理

doi:10.15541/jim20160459

无机材料学报 ›› 2017, Vol. 32 ›› Issue (6): 625-630.DOI: 10.15541/jim20160459 CSTR: 32189.14.10.15541/jim20160459

铝合金基底微碳球作为润滑油添加剂的摩擦学性能及其润滑机理

古毓康¹, 曹磊¹, 万勇¹, 高建国²

(1. 青岛理工大学机械工程学院, 青岛266520; 2. 山东出入境检验检疫局检验检疫技术中心, 青岛266001)

收稿日期:2016-08-08 修回日期:2016-09-23 出版日期:2017-06-20 网络出版日期:2017-05-27
作者简介:古毓康(1991–), 男, 硕士研究生. E-mail: yukang_gu@163.com
基金资助:
国家自然科学基金(51375249);科技部质检行业公益项目(201410083)

Tribological Performance and Lubrication Mechanism of Carbon Microspheres as Oil-based Lubricant Additive on Aluminum Alloy Substrate

GU Yu-Kang¹, CAO Lei¹, WAN Yong¹, GAO Jian-Guo²

(1. School of Mechanical Engineering, Qingdao University of Technology, Qingdao 266520, China; 2. Inspection and Quarantine Center, Shandong Exit & Entry Inspection and Quarantine Bureau, Qingdao 266001, China)

Received:2016-08-08 Revised:2016-09-23 Published:2017-06-20 Online:2017-05-27
About author:GU Yu-Kang. E-mail: yukang_gu@163.com
Supported by:
National Natural Science Foundation of China (51375249);General Administration of Quality Supervision, Insection and Quarantine of the People’s Republic of China (201410083)

摘要/Abstract

摘要：

采用绿色水热制备方法, 以葡萄糖为前身化合物一步制得直径在400~500 nm、尺寸均匀的单分散微碳球, 采用扫描电子显微镜、红外光谱等手段对微碳球的表面形貌及化学特性进行表征, 利用多功能摩擦磨损试验机考察了微碳球作为润滑油添加剂在铝合金-钢摩擦副的减摩耐磨特性, 探讨了微碳球的润滑作用机理。结果表明: 将微碳球作为液体石蜡和商用机油润滑添加剂可以显著提高铝合金-钢摩擦副上的摩擦学性能, 这主要是因为在滑动过程中微碳球可能进入到接触区, 阻止摩擦副之间的直接接触, 并起到纳米滚珠作用。

关键词: 摩擦学性能, 微碳球, 润滑油添加剂, 铝合金

Abstract:

A one-step green hydrothermal method was used to prepare carbon microspheres with size of 400-500 nm by using glucose as the precursor compound. Morphologies and chemical properties of the carbon microspheres were characterized by means of SEM and FTIR. Their tribological properties as the lubricant additive were evaluated on aluminum-steel sliding contact by using a multi-functional friction and wear tester. The lubrication mechanism was also discussed. The results indicate that the carbon microspheres possess good friction-reducing and antiwear performance when they are used as the lubricant additive in both liquid paraffin and 0W-40 engine oil on aluminum-on-steel pairs. Carbon microspheres may enter the contact region and prevent the direct contact of the friction pair. At the same time, they may play a role as micro-nanospheres between the sliding contacts to provide an excellent lubricating effect.

Key words: tribological properties, carbon microspheres, lubricant additive, aluminum alloy

中图分类号:

TH117

古毓康, 曹磊, 万勇, 高建国. 铝合金基底微碳球作为润滑油添加剂的摩擦学性能及其润滑机理[J]. 无机材料学报, 2017, 32(6): 625-630.

GU Yu-Kang, CAO Lei, WAN Yong, GAO Jian-Guo. Tribological Performance and Lubrication Mechanism of Carbon Microspheres as Oil-based Lubricant Additive on Aluminum Alloy Substrate[J]. Journal of Inorganic Materials, 2017, 32(6): 625-630.

图/表 11

表1 5052铝合金化学组成成分/wt%

Table 1 Compositions of 5052 aluminum alloy/wt%

Si	Fe	Cu	Mg	Cr	Mn	Al
0.08	0.32	0.02	2.39	0.18	0.08	Balance

图1 微碳球的SEM照片

Fig. 1 SEM image of carbon microspheres

图2 微碳球表面的FT-IR图谱

Fig. 2 FT-IR spectrum of carbon microspheres

图3 摩擦系数随滑动时间的变化曲线

Fig. 3 Evolution of frictional coefficient with sliding time

图4 下试样磨痕二维轮廓图

Fig. 4 Surface profiles across the wear scans

图5 摩擦系数与磨损量随施加载荷的变化情况

Fig. 5 Change of friction coefficient and wear quantity with the applied load

图6 摩擦系数随滑动时间的变化曲线

Fig. 6 Frictional performance of different lubricants

图7 下试样磨痕二维轮廓图

Fig. 7 Surface profiles across the wear scans

图8 磨痕表面的SEM照片

Fig. 8 SEM images of the worn surface

图9 不同滑动速度下球盘点接触试验台接触区图像

Fig. 9 Pictures of the contact area on ball-on-disk tester at different sliding speeds

图10 微碳球润滑机理示意图

Fig. 10 Schematic diagram of lubrication mechanism of carbon microspheres

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铝合金基底微碳球作为润滑油添加剂的摩擦学性能及其润滑机理

Tribological Performance and Lubrication Mechanism of Carbon Microspheres as Oil-based Lubricant Additive on Aluminum Alloy Substrate

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