Investigate on the dry friction tribological behaviors and mechanism of carbon quantum dot/polyimide composites coating

被引：13

作者：

Hu, Enzhu ^{[1
]}

Su, Enhao ^{[1
]}

Subedi, Ayush ^{[1
]}

Liu, Shusheng ^{[1
]}

Wang, Jianping ^{[1
]}

Zhong, Hua ^{[1
]}

Hu, Kunhong ^{[1
]}

机构：

[1] Hefei Univ, Dept Energy Mat & Chem Engn, 99 Jinxiu Rd, Hefei 230601, Peoples R China

来源：

WEAR | 2023年 / 530卷

关键词：

Sliding friction; Hardness; Carbon quantum dots; Solid lubricants; Surface analysis; DOTS; NANOTUBE;

D O I：

10.1016/j.wear.2023.205048

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The comprehensive utilization of biomass resources is to be prepared into functional nanomaterial. This paper prepared carbon quantum dots (CQDs) using citric acid. A new CQDs/polyimide composites (CQDs/PI) coating fabricated on the surface of steel disks, has been widely used in bearing sleeve material or coatings in marine equipment parts and aerospace industries. Tribological properties of coating materials were investigated at different loads and reciprocating speeds of 10 mm/s under dry sliding conditions using a UMT-2 tribometer and compared to those of commercial MoS2 particles in PI composites. Scanning electron microscopy accompanied by energy spectroscopy (SEM/EDS) and 3D laser scanning microscopy were used to characterize the morphologies of the abrasion marks to clarify the tribological mechanisms. Results show that different levels of CQDs can improve composite coatings' anti-wear and friction reduction properties. The tribological mechanisms of CQDs were attributed to the enhancement of the hardness of the polyimide coatings by the CQDs and the formation of a transfer film on the surface of the ceramic balls during the friction process reducing the direct contact at the friction sub-interface.1

引用

页数：9

共 43 条

[1] Carbon Quantum Dots for Biomedical Applications: Review and Analysis [J].

Azam, Nayab ;

Ali, Murtaza Najabat ;

Khan, Tooba Javaid .

FRONTIERS IN MATERIALS, 2021, 8

[2] Carbon quantum dots from natural resource: A review [J].

Das, Rashmita ;

Bandyopadhyay, Rajib ;

Pramanik, Panchanan .

MATERIALS TODAY CHEMISTRY, 2018, 8 :96-109

[3] An investigation on the mechanical and tribological properties of carbon fiber/polyimide composites at elevated temperatures [J].

Dong, Fengxia ;

Hou, Guoliang ;

Liu, Hao ;

Liu, Liang ;

Cao, Fengxiang ;

Wang, Jianzhang ;

Yan, Fengyuan .

POLYMER COMPOSITES, 2018, 39 :E869-E882

[4] Functional Carbon Quantum Dots: A Versatile Platform for Chemosensing and Biosensing [J].

Feng, Hui ;

Qian, Zhaosheng .

CHEMICAL RECORD, 2018, 18 (05) :491-505

[5] Synthesis of N-doped carbon quantum dots as lubricant additive to enhance the tribological behavior of MoS2 nanofluid [J].

He, Jiaqi ;

Sun, Jianlin ;

Choi, Junho ;

Wang, Chenglong ;

Su, Daoxin .

FRICTION, 2023, 11 (03) :441-459

[6] The impact of tribology on energy use and CO2 emission globally and in combustion engine and electric cars [J].

Holmberg, Kenneth ;

Erdemir, Ali .

TRIBOLOGY INTERNATIONAL, 2019, 135 :389-396

[7]

Huang H., 2015, NANOSCALE, V7, P1

[8] Role of fullerene carbon on tribological performance of polyimide composites at a large temperature span [J].

Huimin, Qi ;

Yang, Lei ;

Jiaxin, Yu ;

Gai, Zhao ;

Baogang, Guo ;

Liang, Zhou ;

Ding, Zhang .

TRIBOLOGY INTERNATIONAL, 2022, 173

[9]

Kausar A., 2020, POLYM PLAST TECHNOL, P1

[10] Carbon-Based Quantum Dots for Photovoltaic Devices: A Review [J].

Kim, Andrew ;

Dash, Jatis Kumar ;

Kumar, Pawan ;

Patel, Rajkumar .

ACS APPLIED ELECTRONIC MATERIALS, 2022, 4 (01) :27-58

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