Accelerating Macroscale Superlubricity through Carbon Quantum Dots on Engineering Steel Surfaces | |
Department | 固体润滑国家重点实验室(LSL) |
Changhe Du1,2; Tao Yang1,2; Tongtong Yu1,3; Liqiang Zhang1,3; Xudong Sui1,2,3; Yange Feng1,4; Xiaobo Wang1,2; Daoai Wang1,2 | |
The second department | 摩擦物理与传感课题组 |
2023 | |
Source Publication | Advanced Functional Materials |
Issue | 无Pages:2310880 |
Abstract | Macroscale superlubricity on engineering steel surfaces offers a promising solution for minimizing friction and wear in engineering applications. However, achieving superlubricity typically requires a long running-in period, which may result in significant wear for the friction pair. Herein, a new lubricant with superlubricating properties was rationally designed by using polyethylene glycol (PEG) and critic acid (CA) under complexing effect with a running-in period of about 800 s. Importantly, the introduction of carbon quantum dots (CQDs) obtained from the pyrolysis of CA into PEG aqueous solution, shortens the running-in period for achieving macroscale superlubricity (μ≈0.005) between steel/steel contact to 44 s. The corresponding wear rate (1.15 × 10−7 mm3·N−1·m−1) on the steel disk is reduced by 77% due to the shorter running-in time. Furthermore, the surface analysis combined with the molecular dynamics simulations demonstrated that CQDs easily adsorb on the surface of the friction pair, forming a carbon film that reduces interaction energy between the lubricant molecules and the substrate. This work provides new insights into the lubrication mechanism of CQDs and contributes to the design of liquid superlubricants with short running-in periods and low wear rates on engineering steel surfaces. |
Keyword | superlubricity carbon quantum dots citric acid running-in period engineering steel |
DOI | 10.1002/adfm.202310880 |
If | 19 |
Language | 英语 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/30407 |
Collection | 固体润滑国家重点实验室(LSL) |
Corresponding Author | Daoai Wang |
Affiliation | 1.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China 2.Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China 3.Qingdao Center of Resource Chemistry and New Materials, Qingdao 266100, China 4.Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing, Yantai 265503, China |
Recommended Citation GB/T 7714 | Changhe Du,Tao Yang,Tongtong Yu,et al. Accelerating Macroscale Superlubricity through Carbon Quantum Dots on Engineering Steel Surfaces[J]. Advanced Functional Materials,2023(无):2310880. |
APA | Changhe Du.,Tao Yang.,Tongtong Yu.,Liqiang Zhang.,Xudong Sui.,...&Daoai Wang.(2023).Accelerating Macroscale Superlubricity through Carbon Quantum Dots on Engineering Steel Surfaces.Advanced Functional Materials(无),2310880. |
MLA | Changhe Du,et al."Accelerating Macroscale Superlubricity through Carbon Quantum Dots on Engineering Steel Surfaces".Advanced Functional Materials .无(2023):2310880. |
Files in This Item: | ||||||
File Name/Size | DocType | Version | Access | License | ||
杜长合-Adv Funct Materi(4308KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment