Effect of the microstructure and properties of graphite/copper composites fabricated by microwave sintering

In this study, graphite/copper composites were prepared by microwave sintering. The microstructure and properties of the composites were characterized. The effects of different sintering temperatures on the properties of the composites were studied, and the differences between microwave sintering an...

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Bibliographic Details
Published in:Journal of materials science 2021-05, Vol.56 (15), p.9183-9195
Main Authors: Wang, Zemin, Xu, Lei, Peng, Jinhui, Tang, Zhimeng, Han, Zhaohui, Liu, Jianhua
Format: Article
Language:English
Subjects:
Anisotropy
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Comparative analysis
Composite materials
Composites & Nanocomposites
Copper
Crystallography and Scattering Methods
Electrical conductivity
Electrical resistivity
Grain size
Graphite
Heat conductivity
Heat transfer
Materials Science
Microstructure
Microwave sintering
Polymer Sciences
Properties (attributes)
Sintering
Solid Mechanics
Thermal conductivity
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Summary:In this study, graphite/copper composites were prepared by microwave sintering. The microstructure and properties of the composites were characterized. The effects of different sintering temperatures on the properties of the composites were studied, and the differences between microwave sintering and conventional sintering composites were compared. The results show that after microwave sintering, the grain size of the copper matrix is refined and the graphite/copper interface is improved, and the distribution of graphite over the matrix becomes more uniform. Compared with conventional sintering, the properties of microwave-sintered samples have been further improved. Besides, with the increase in sintering temperature, the density, hardness, electrical conductivity and thermal conductivity of the composite have been improved, and some properties have become anisotropic obviously. Thus, the electrical conductivity and thermal conductivity along the direction of graphite sheet are higher than those perpendicular to the sheet.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-021-05891-5