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Microstructures and Properties of Cu-rGO Composites Prepared by Microwave Sintering
This study investigated the effects of microwave sintering on the microstructures and properties of copper-rGO composites. Graphene oxide was coated onto copper particles by wet ball milling, and copper-rGO composites were formed upon microwave sintering in an argon atmosphere. Scanning electron mic...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8432697/ https://www.ncbi.nlm.nih.gov/pubmed/34500989 http://dx.doi.org/10.3390/ma14174899 |
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author | Chen, Xuebin Zhao, Lei Jiang, Liwu Wang, Haizhou |
author_facet | Chen, Xuebin Zhao, Lei Jiang, Liwu Wang, Haizhou |
author_sort | Chen, Xuebin |
collection | PubMed |
description | This study investigated the effects of microwave sintering on the microstructures and properties of copper-rGO composites. Graphene oxide was coated onto copper particles by wet ball milling, and copper-rGO composites were formed upon microwave sintering in an argon atmosphere. Scanning electron microscopy was then used to observe the mixing in the ball-milled composite powder, and the morphology of the bulk composite after microwave sintering. Raman spectra revealed how graphene oxide changed with ball milling and with microwave sintering. The microhardness, electrical conductivity, and thermal conductivity of the composite were also measured. The results showed that graphene oxide and copper particles were well combined and uniformly distributed after wet ball milling. The overall microhardness of microwave-sintered samples was 81.1 HV, which was 14.2% greater than that of pure copper (71 HV). After microwave sintering, the microhardness of the samples in areas showing copper oxide precipitates with eutectic structures was 89.5 HV, whereas the microhardness of the precipitate-free areas was 70.6 HV. The electrical conductivity of the samples was 87.10 IACS%, and their thermal conductivity was 391.62 W·m(−1)·K(−1). |
format | Online Article Text |
id | pubmed-8432697 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-84326972021-09-11 Microstructures and Properties of Cu-rGO Composites Prepared by Microwave Sintering Chen, Xuebin Zhao, Lei Jiang, Liwu Wang, Haizhou Materials (Basel) Article This study investigated the effects of microwave sintering on the microstructures and properties of copper-rGO composites. Graphene oxide was coated onto copper particles by wet ball milling, and copper-rGO composites were formed upon microwave sintering in an argon atmosphere. Scanning electron microscopy was then used to observe the mixing in the ball-milled composite powder, and the morphology of the bulk composite after microwave sintering. Raman spectra revealed how graphene oxide changed with ball milling and with microwave sintering. The microhardness, electrical conductivity, and thermal conductivity of the composite were also measured. The results showed that graphene oxide and copper particles were well combined and uniformly distributed after wet ball milling. The overall microhardness of microwave-sintered samples was 81.1 HV, which was 14.2% greater than that of pure copper (71 HV). After microwave sintering, the microhardness of the samples in areas showing copper oxide precipitates with eutectic structures was 89.5 HV, whereas the microhardness of the precipitate-free areas was 70.6 HV. The electrical conductivity of the samples was 87.10 IACS%, and their thermal conductivity was 391.62 W·m(−1)·K(−1). MDPI 2021-08-28 /pmc/articles/PMC8432697/ /pubmed/34500989 http://dx.doi.org/10.3390/ma14174899 Text en © 2021 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 Chen, Xuebin Zhao, Lei Jiang, Liwu Wang, Haizhou Microstructures and Properties of Cu-rGO Composites Prepared by Microwave Sintering |
title | Microstructures and Properties of Cu-rGO Composites Prepared by Microwave Sintering |
title_full | Microstructures and Properties of Cu-rGO Composites Prepared by Microwave Sintering |
title_fullStr | Microstructures and Properties of Cu-rGO Composites Prepared by Microwave Sintering |
title_full_unstemmed | Microstructures and Properties of Cu-rGO Composites Prepared by Microwave Sintering |
title_short | Microstructures and Properties of Cu-rGO Composites Prepared by Microwave Sintering |
title_sort | microstructures and properties of cu-rgo composites prepared by microwave sintering |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8432697/ https://www.ncbi.nlm.nih.gov/pubmed/34500989 http://dx.doi.org/10.3390/ma14174899 |
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