{"title":"石墨烯修饰GQDs对铜复合材料摩擦学和电学性能的协同增强","authors":"Zhong-Hua Li, Shuang-Yin Zhang, Liang Liu, Rui Bao, Jian-Hong Yi, Cai-Ju Li, Yi-Chun Liu, Xiao-Feng Chen, Zun-Yan Xu, Ke Chu","doi":"10.1007/s12598-024-03096-8","DOIUrl":null,"url":null,"abstract":"<div><p>A novel approach of decorating graphene surface with graphene quantum dots (abbreviated as GQDs@Gr) was presented to achieve superior tribological properties in Gr/Cu composites. The prepared GQDs@Gr hybrid reinforcement possessed superior dispersion and had achieved strong interface bonding with Cu matrix. GQDs@Gr/Cu composite showed a good combination of wear resistance and electrical conductivity due to the synergistic effect of GQDs and Gr. Specifically, the coefficient of friction (COF) was reduced to 0.3, the wear rate (WR) was 2.13 × 10<sup>–5</sup> mm<sup>3</sup>·N<sup>−1</sup>·m<sup>−1</sup> (only a quarter of pure copper), and maintained the electrical conductivity of 96.5%IACS (international annealed copper standard). As a result, delamination, fracture, and plow furrows on the wear surface of Gr/Cu composite indicate that fatigue and abrasive adhesive wear are the main wear mechanisms. Wear surface lubrication film and strong interface bonding ensure better comprehensive performance of GQDs@Gr/Cu composite.</p></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 4","pages":"2672 - 2681"},"PeriodicalIF":9.6000,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Cooperative enhancement of tribological and electrical properties of copper composites by decorating graphene with GQDs\",\"authors\":\"Zhong-Hua Li, Shuang-Yin Zhang, Liang Liu, Rui Bao, Jian-Hong Yi, Cai-Ju Li, Yi-Chun Liu, Xiao-Feng Chen, Zun-Yan Xu, Ke Chu\",\"doi\":\"10.1007/s12598-024-03096-8\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>A novel approach of decorating graphene surface with graphene quantum dots (abbreviated as GQDs@Gr) was presented to achieve superior tribological properties in Gr/Cu composites. The prepared GQDs@Gr hybrid reinforcement possessed superior dispersion and had achieved strong interface bonding with Cu matrix. GQDs@Gr/Cu composite showed a good combination of wear resistance and electrical conductivity due to the synergistic effect of GQDs and Gr. Specifically, the coefficient of friction (COF) was reduced to 0.3, the wear rate (WR) was 2.13 × 10<sup>–5</sup> mm<sup>3</sup>·N<sup>−1</sup>·m<sup>−1</sup> (only a quarter of pure copper), and maintained the electrical conductivity of 96.5%IACS (international annealed copper standard). As a result, delamination, fracture, and plow furrows on the wear surface of Gr/Cu composite indicate that fatigue and abrasive adhesive wear are the main wear mechanisms. Wear surface lubrication film and strong interface bonding ensure better comprehensive performance of GQDs@Gr/Cu composite.</p></div>\",\"PeriodicalId\":749,\"journal\":{\"name\":\"Rare Metals\",\"volume\":\"44 4\",\"pages\":\"2672 - 2681\"},\"PeriodicalIF\":9.6000,\"publicationDate\":\"2025-01-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Rare Metals\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s12598-024-03096-8\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Rare Metals","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s12598-024-03096-8","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Cooperative enhancement of tribological and electrical properties of copper composites by decorating graphene with GQDs
A novel approach of decorating graphene surface with graphene quantum dots (abbreviated as GQDs@Gr) was presented to achieve superior tribological properties in Gr/Cu composites. The prepared GQDs@Gr hybrid reinforcement possessed superior dispersion and had achieved strong interface bonding with Cu matrix. GQDs@Gr/Cu composite showed a good combination of wear resistance and electrical conductivity due to the synergistic effect of GQDs and Gr. Specifically, the coefficient of friction (COF) was reduced to 0.3, the wear rate (WR) was 2.13 × 10–5 mm3·N−1·m−1 (only a quarter of pure copper), and maintained the electrical conductivity of 96.5%IACS (international annealed copper standard). As a result, delamination, fracture, and plow furrows on the wear surface of Gr/Cu composite indicate that fatigue and abrasive adhesive wear are the main wear mechanisms. Wear surface lubrication film and strong interface bonding ensure better comprehensive performance of GQDs@Gr/Cu composite.
期刊介绍：
Rare Metals is a monthly peer-reviewed journal published by the Nonferrous Metals Society of China. It serves as a platform for engineers and scientists to communicate and disseminate original research articles in the field of rare metals. The journal focuses on a wide range of topics including metallurgy, processing, and determination of rare metals. Additionally, it showcases the application of rare metals in advanced materials such as superconductors, semiconductors, composites, and ceramics.
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