Fabrication of homogeneously dispersed graphene/Al composites by solution mixing and powder metallurgy
来源期刊：International Journal of Minerals Metallurgy and Materials2018年第1期
论文作者：Xiang Zeng Jie Teng Jin-gang Yu Ao-shuang Tan Ding-fa Fu Hui Zhang
文章页码：102 - 109
摘 要：Graphene-reinforced aluminum（Al） matrix composites were successfully prepared via solution mixing and powder metallurgy in this study. The mechanical properties of the composites were studied using microhardness and tensile tests. Compared to the pure Al alloy, the graphene/Al composites showed increased strength and hardness. A tensile strength of 255 MPa was achieved for the graphene/Al composite with only 0.3 wt% graphene, which has a 25% increase over the tensile strength of the pure Al matrix. Raman spectroscopy, Fourier transform infrared spectroscopy, scanning electron microscopy, and transmission electron microscopy were used to investigate the morphologies, chemical compositions, and microstructures of the graphene and the graphene/Al composites. On the basis of fractographic evidence, a relevant fracture mechanism is proposed.
Xiang Zeng1，Jie Teng1，Jin-gang Yu2，Ao-shuang Tan1，Ding-fa Fu1，Hui Zhang1
1. School of Materials Science and Engineering,Hunan University2. College of Chemistry and Chemical Engineering,Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources,Central South University
摘 要：Graphene-reinforced aluminum（Al） matrix composites were successfully prepared via solution mixing and powder metallurgy in this study. The mechanical properties of the composites were studied using microhardness and tensile tests. Compared to the pure Al alloy, the graphene/Al composites showed increased strength and hardness. A tensile strength of 255 MPa was achieved for the graphene/Al composite with only 0.3 wt% graphene, which has a 25% increase over the tensile strength of the pure Al matrix. Raman spectroscopy, Fourier transform infrared spectroscopy, scanning electron microscopy, and transmission electron microscopy were used to investigate the morphologies, chemical compositions, and microstructures of the graphene and the graphene/Al composites. On the basis of fractographic evidence, a relevant fracture mechanism is proposed.
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