Fabrication of homogeneously dispersed graphene/Al composites by solution mixing and powder metallurgy
Fabrication of homogeneously dispersed graphene/Al composites by solution mixing and powder metallurgy
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溶液混合和粉末冶金制备均匀分散的石墨烯/铝复合材料
DOI：
10.1007/s12613-018-1552-4
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发表时间：
2018
影响因子：
4.8
通讯作者：
Zhang Hui
中科院分区：
文献类型：
--
作者：
Zeng Xiang;Teng Jie;Yu Jin gang;Tan Ao shuang;Fu Ding fa;Zhang Hui
本文采用溶液共混法和粉末冶金法制备了石墨烯增强铝基复合材料。通过显微硬度和拉伸试验研究了复合材料的力学性能。与纯铝合金相比，石墨烯/铝复合材料显示出增加的强度和硬度。石墨烯含量仅为0.3wt%的石墨烯/Al复合材料的拉伸强度达到255 MPa，比纯Al基体的拉伸强度提高了25%。采用拉曼光谱、傅里叶变换红外光谱、扫描电子显微镜和透射电子显微镜对石墨烯和石墨烯/Al复合材料的形貌、化学组成和微观结构进行了研究。在断口分析的基础上，提出了相应的断裂机制。
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 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.