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Microstructure and Properties of a Graphene Reinforced Cu–Cr–Mg Composite

To improve the graphene/copper interfacial bonding and the strength of the copper matrix, Cu–Cr–Mg alloy powder and graphene nanosheets (GNPs) have been used as raw materials in the preparation of a layered graphene/Cu–Cr–Mg composite through high-energy ball-milling and fast hot-pressing sintering....

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Autores principales: Lu, Ruiyu, Liu, Bin, Cheng, Huichao, Gao, Shenghan, Li, Tiejun, Li, Jia, Fang, Qihong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9458001/
https://www.ncbi.nlm.nih.gov/pubmed/36079546
http://dx.doi.org/10.3390/ma15176166
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author Lu, Ruiyu
Liu, Bin
Cheng, Huichao
Gao, Shenghan
Li, Tiejun
Li, Jia
Fang, Qihong
author_facet Lu, Ruiyu
Liu, Bin
Cheng, Huichao
Gao, Shenghan
Li, Tiejun
Li, Jia
Fang, Qihong
author_sort Lu, Ruiyu
collection PubMed
description To improve the graphene/copper interfacial bonding and the strength of the copper matrix, Cu–Cr–Mg alloy powder and graphene nanosheets (GNPs) have been used as raw materials in the preparation of a layered graphene/Cu–Cr–Mg composite through high-energy ball-milling and fast hot-pressing sintering. The microstructure of the composite after sintering, as well as the effect of graphene on the mechanical properties and conductivity of the composite, are also studied. The results show that the tensile strength of the composite material reached a value of 349 MPa, which is 46% higher than that of the copper matrix, and the reinforcement efficiency of graphene is as large as 136. Furthermore, the electrical conductivity of the composite material was 81.6% IACS, which is only 0.90% IACS lower than that of the copper matrix. The Cr and Mg elements are found to diffuse to the interface of the graphene/copper composite during sintering, and finely dispersed chromium carbide particles are found to significantly improve the interfacial bonding strength of the composite. Thus, graphene could effectively improve the mechanical properties of the composite while maintaining a high electrical conductivity.
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spelling pubmed-94580012022-09-09 Microstructure and Properties of a Graphene Reinforced Cu–Cr–Mg Composite Lu, Ruiyu Liu, Bin Cheng, Huichao Gao, Shenghan Li, Tiejun Li, Jia Fang, Qihong Materials (Basel) Article To improve the graphene/copper interfacial bonding and the strength of the copper matrix, Cu–Cr–Mg alloy powder and graphene nanosheets (GNPs) have been used as raw materials in the preparation of a layered graphene/Cu–Cr–Mg composite through high-energy ball-milling and fast hot-pressing sintering. The microstructure of the composite after sintering, as well as the effect of graphene on the mechanical properties and conductivity of the composite, are also studied. The results show that the tensile strength of the composite material reached a value of 349 MPa, which is 46% higher than that of the copper matrix, and the reinforcement efficiency of graphene is as large as 136. Furthermore, the electrical conductivity of the composite material was 81.6% IACS, which is only 0.90% IACS lower than that of the copper matrix. The Cr and Mg elements are found to diffuse to the interface of the graphene/copper composite during sintering, and finely dispersed chromium carbide particles are found to significantly improve the interfacial bonding strength of the composite. Thus, graphene could effectively improve the mechanical properties of the composite while maintaining a high electrical conductivity. MDPI 2022-09-05 /pmc/articles/PMC9458001/ /pubmed/36079546 http://dx.doi.org/10.3390/ma15176166 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Lu, Ruiyu
Liu, Bin
Cheng, Huichao
Gao, Shenghan
Li, Tiejun
Li, Jia
Fang, Qihong
Microstructure and Properties of a Graphene Reinforced Cu–Cr–Mg Composite
title Microstructure and Properties of a Graphene Reinforced Cu–Cr–Mg Composite
title_full Microstructure and Properties of a Graphene Reinforced Cu–Cr–Mg Composite
title_fullStr Microstructure and Properties of a Graphene Reinforced Cu–Cr–Mg Composite
title_full_unstemmed Microstructure and Properties of a Graphene Reinforced Cu–Cr–Mg Composite
title_short Microstructure and Properties of a Graphene Reinforced Cu–Cr–Mg Composite
title_sort microstructure and properties of a graphene reinforced cu–cr–mg composite
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9458001/
https://www.ncbi.nlm.nih.gov/pubmed/36079546
http://dx.doi.org/10.3390/ma15176166
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