GO添加量对RGO/Cu复合材料组织与性能的影响

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Abstract RGO/Cu composites were prepared by wet milling and repressing and re-sintering process. The effect of GO addition (0%, 0.3%, 0.5%, 1.0%,wt% ) on the microstructure and properties of RGO/Cu composites was investigated. The results reveal that GO was uniformly distributed in Cu matrix and played a role in refining grain. The lubrication of GO promoted grain sliding and rotation, filled the grain gap and improved the density of materials. The relative density of 0.5wt% RGO/Cu composites was the largest (99.4%). As the GO addition, the grain boundary area expansion caused by refined grain and Cu matrix density decrease increased the scattering of electrons, and results in the composite conductivity decreases. The strength and hardness of composites were improved by fine grain strengthening and repressing process. Compared with pure copper, the hardness of 1.0wt% RGO/Cu composites (80.6HV) was increased by 40%, the tensile strength of 0.3wt% RGO/Cu composites (241.3 MPa) was increased by 32%. However, the excess GO will agglomerate, then decrease composites elongation.

Key words： RGO/Cu composites repressing and re-sintering process microstructure properties

Published: 05 July 2019

CLC number:

TG146.1+1

About author:: Qihu Hong, obtained his master’s degree from Nanchang Hangkong University in 2011 and served in Beijing Institute of Aeronautical Materials till now. He is currently working on the development and application of graphene metal-based nanocomposites and magnetic nanomaterials.Shaojiu Yan received his Ph.D. degree from the Harbin Institute of Technology. He is a professor of Beijing Institute of Aeronautical Materials and engaged in the preparation and application of low-dimensional nanomaterials.His research interests focus on the preparation and application of graphene energy storage materials, graphene metal-based nanocomposites, magnetic nanomaterials and graphene information materials. He has published more than 20 journal papers, 1 monograph and is also a reviewer of several academic journals. He has applied 2 international patents, more than 50 national invention patents and 8 national defence patents, hosted and developed more than 10 major projects.

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	HONG Qihu
	YAN Shaojiu
	CHEN Xiang
	LI Xiuhui
	SHU Xiaoyong
	WU Tingguang

Cite this article:

HONG Qihu,YAN Shaojiu,CHEN Xiang, et al. Effect of GO Addition on Microstructure and Properties of RGO/Cu Composite[J]. Materials Reports, 2019, 33(z1): 62-66.

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http://www.mater-rep.com/EN/ OR http://www.mater-rep.com/EN/Y2019/V33/Iz1/62

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