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Tribological properties of carbonized polydopamine/rGO composite coatings

Ming Yang (College of Materials Science and Engineering, Liaocheng University, Liaocheng, China)
Zhengfeng Jia (College of Materials Science and Engineering, Liaocheng University, Liaocheng, China)
Denghu Wei (College of Materials Science and Engineering, Liaocheng University, Liaocheng, China)
Yunxia Wang (State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics Chinese Academy of Sciences, Lanzhou, China)
Xianjuan Pang (National United Engineering Laboratory for Advanced Bearing Tribology, Henan University of Science and Technology, Luoyang, China)
Jinming Zhen (College of Materials Science and Engineering, Liaocheng University, Liaocheng, China)
Ran Zhang (College of Materials Science and Engineering, Liaocheng University, Liaocheng, China)
Bo Yu (College of Mechanical and Electrical Engineering, Nanjing Forestry University, Nanjing, China)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 29 August 2019

Issue publication date: 14 January 2020

173

Abstract

Purpose

The purpose of this paper is to investigate the tribological properties of carbonized polydopamine/reduced graphene oxide (CPDA/rGO) composite coatings.

Design/methodology/approach

CPDA/rGO composite coatings were prepared using the spray technique and subsequent pyrolysis under argon. The transmission electron microscopy, field-emission scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and Raman spectroscopy revealed the conversion of PDA and GO into CPDA and rGO, respectively.

Findings

The results of tribological investigations show that the CPDA/rGO composite coatings with heat treatment at 300°C possess much better friction-reduction and anti-wear properties.

Originality/value

The worn surfaces of the PDA/GO composite films after heat treatment at 300°C were much smoother than that of the copper substrate. The tribofilms containing C, N, O and Cu played an important role on reducing friction and increasing wear resistance.

Keywords

Acknowledgements

The authors thank the support of Project of Natural Science Foundation of China (Grant No. 51775282), Shan Dong Province Nature Science Foundation (Grant ZR2017MEM001; ZR2019MEE018) and Open Project of National United Engineering Laboratory for Advanced Bearing Tribology, Henan University of Science and Technology (201810).

Compliance with ethical standards.

The authors declare no competing interests.

Citation

Yang, M., Jia, Z., Wei, D., Wang, Y., Pang, X., Zhen, J., Zhang, R. and Yu, B. (2020), "Tribological properties of carbonized polydopamine/rGO composite coatings", Industrial Lubrication and Tribology, Vol. 72 No. 1, pp. 54-65. https://doi.org/10.1108/ILT-06-2019-0203

Publisher

:

Emerald Publishing Limited

Copyright © 2019, Emerald Publishing Limited

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