| Fabrication of homogeneously dispersed graphene/Al composites by solution mixing and powder metallurgy |
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| 作者姓名： | Xiang Zeng Jie Teng Jin-gang Yu Ao-shuang Tan Ding-fa Fu Hui Zhang |
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| 作者单位： | School of Materials Science and Engineering, Hunan University, Changsha 410082, China |
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| 基金项目： | This work was financially supported by the National Natural Science Foundation of China，the Natural Science Foundation of Hunan Province，the Project of Innova-tion-driven Plan in Central South University，the Hunan Provincial Science and Tech-nology Plan Project |
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| 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 0.3wt% 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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| 关 键 词： | graphene metal matrix composites solution mixing powder metallurgy mechanical properties |
Fabrication of homogeneously dispersed graphene/Al composites by solution mixing and powder metallurgy |
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| Xiang Zeng,Jie Teng,Jin-gang Yu,Ao-shuang Tan,Ding-fa Fu,Hui Zhang.Fabrication of homogeneously dispersed graphene/Al composites by solution mixing and powder metallurgy[J].International Journal of Minerals,Metallurgy and Materials,2018,25(1):102-109. |
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| Authors: | Xiang Zeng Jie Teng Jin-gang Yu Ao-shuang Tan Ding-fa Fu Hui Zhang |
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| Institution: | 1.School of Materials Science and Engineering,Hunan University,Changsha,China;2.College of Chemistry and Chemical Engineering, Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources,Central South University,Changsha,China |
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| Abstract: | Graphene-reinforced aluminum (Al) matrix composites were successfully preparedviasolution 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 com-posite with only 0.3wt% 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 morphol-ogies, 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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