石墨烯层数对分散性和摩擦学性能的影响

张春风, 张晓军, 张伟, 赵壮, 樊小强

doi:10.16577/j.issn.1001-1560.2024.0075

材料保护 >

2024 , Vol. 57 >Issue 4: 29 - 38

DOI: https://doi.org/10.16577/j.issn.1001-1560.2024.0075

研究篇

石墨烯层数对分散性和摩擦学性能的影响

展开

（1. 山西潞安太行润滑科技股份有限公司，山西长治046011；
2. 西南交通大学材料科学与工程学院材料先进技术教育部重点实验室，四川成都610031）

樊小强(1986-)，教授，博士，研究方向：摩擦学及表面工程，E-mail：fxq@home.swjtu.edu.cn

收稿日期: 2023-07-04

修回日期: 2023-07-19

录用日期: 2023-08-19

网络出版日期: 2024-04-30

基金资助

国家自然科学基金面上项目“航天紧固件强韧与润滑一体化复合碳基薄膜界面调控及防松动机理研究”（52075458）

收起

The Effect of Graphene Layer Number on Dispersibility and Tribological Performance

Expand

(1. Shanxi Lu’an Taihang Lubrication Technology Co., Ltd., Changzhi 046011, China;
2. Key Laboratory of Advanced Technologies of Materials (Ministry of Education),
School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China)

FAN Xiaoqiang(1986-), Professor, Ph.D., Research Focus: Tribology and Surface Engineering，E-mail：fxq@home.swjtu.edu.cn The Effect of Graphene Layer Number on Dispersibility and Tribological Performance

Received date: 2023-07-04

Revised date: 2023-07-19

Accepted date: 2023-08-19

Online published: 2024-04-30

Supported by

National Natural Science Foundation of China, Interface Regulation and Anti-Looseness Mechanism of Composite Carbon-Based Film with High Hardness/Toughness and Desired Lubrication for Aerospace's Fastener（52075458）

Fold

摘要

为了提高传动油基础油的摩擦学性能并探究石墨烯层数对其的影响，选用了不同层数的石墨烯纳米片和纳米石墨(NG)作为传动油基础油的润滑添加剂，使用UMT-3往复摩擦试验机测试了不同层数石墨烯以及纳米石墨传动油基础油的润滑特性。结果显示：不同层数的石墨烯在传动油基础油中的分散稳定性不同。其中，单层石墨烯由于其表面积大，层间作用力较弱，油分子可以充分填充石墨烯层间发生位阻效应，因而拥有最优异的分散稳定性。此外，不同层数的石墨烯以及NG作为传动油润滑添加剂都可以提高传动油基础油的润滑特性。其中，单层石墨烯(SGN)传动油展现出最佳的摩擦学性能，其磨损量与基础油相比减少了98%。另外，对石墨烯以及NG传动油润滑的磨损表面的Raman测试中检测出明显的石墨烯峰，说明石墨烯以及NG在摩擦区域的吸附形成了致密的摩擦膜从而降低了摩擦系数和磨损率。对SGN传动油的摩擦产物进行收集并观察，有力地揭示了其润滑机理。SGN优异的摩擦学性能主要归因于其优异的分散稳定性以及剪切作用下发生的结构有序化转变。

关键词： 石墨烯; 层数; 摩擦学性能; 分散性; 有序化转变

本文引用格式

张春风, 张晓军, 张伟, 赵壮, 樊小强 . 石墨烯层数对分散性和摩擦学性能的影响[J]. 材料保护, 2024 , 57(4) : 29 -38 . DOI: 10.16577/j.issn.1001-1560.2024.0075

Abstract

In order to improve the tribological performance of transmission oil base oil and explore the influence of graphene layers on it, the graphene nanosheets with different layers and nano graphite(NG) were selected as lubrication additives for transmission oil base oil, and the lubrication characteristics of different layers of graphene and nano graphite transmission oil base oils were tested by UMT-3 reciprocating friction tester. Results showed that the dispersion stability of graphene with different layers in transmission oil base oil was different. Among them, single-layer graphene had the best dispersion stability due to its large surface area and weak interlayer forces, and oil molecules could fully fill the graphene interlayer and cause steric hindrance effects, which endowed it with the best dispersion stability. Moreover, all graphene with different layers and NG as lubricating additives for transmission oil could improve the lubrication characteristics of the transmission oil base oil. Therein, single-layer graphene(SGN) transmission oil exhibited the best tribological performance, with a 98% reduction in wear amount compared to base oil. In addition, the significant graphene peaks were detected in Raman tests on the worn surfaces lubricated with graphene and NG transmission oil, indicating that the adsorption of graphene and NG in the friction area formed a dense friction film, thereby reducing the friction coefficient and wear rate. Collecting and observing the friction products of SGN transmission oil effectively revealed its lubrication mechanism. Besides, the excellent tribological performance of SGN was mainly attributed to its excellent dispersion stability and the structural ordering transformation that occurred under shear action.

Key words： graphene; number of layers; tribological properties; dispersibility; ordering transformation

Options

文章导航

模态框（Modal）标题

摘要

本文引用格式

Abstract