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摘要: 石墨烯因其独特的二维结构和优异的导热、导电及力学性能,成为了最具潜力的增强体材料之一。本文综述了铝−石墨烯复合材料的制备工艺,着重介绍了影响铝−石墨烯复合材料力学性能和导电率的因素,总结了铝−石墨烯复合材料在高强高导材料领域的应用,讨论了产业化过程中在优质石墨烯粉制备、规模化混粉工艺、连续化加工等方面所面临的挑战,提出了铝−石墨烯复合材料可能的产业化工艺方案和研发方向。Abstract: Graphene has become one of the most potential reinforcing materials because of the unique two-dimensional structure and the excellent thermal, electrical, and mechanical properties. In this paper, the preparation of the aluminum−graphene composites was reviewed. The influence factors on the mechanical properties and conductivity performances of the aluminum−graphene composites were introduced. Subsequently, the applications of the aluminum−graphene composites in the field of high strength and high conductivity materials were investigated. Challenges on the preparation of high quality graphene powders, the scale production of mixing powders, and the continuously processing method in the industrialization were discussed. The possible technological methods for the industrialization of aluminum−graphene composites and the potential research directions were proposed.
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Key words:
- composites /
- graphene /
- high-strength /
- high-conductivity /
- research progress
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表 1 不同实验条件下的铝−石墨烯复合材料力学性能
Table 1. Mechanical properties of the aluminum-graphene composites under the different experimental conditions
石墨烯质量
分数 / %基体 力学性能 较基体材料增幅 延伸率 /
%参考文献 极限抗拉强度 / MPa 屈服强度 / MPa 抗拉强度增幅 / % 屈服强度增幅 / % 0.25 纯Al 164 112 56 38 15.0 [37] 0.50 152 104 45 28 13.0 1.00 138 92 31 13 12.0 0.50 纯Al 173 136 17 9 45.7 [27] 1.00 248 194 69 55 15.2 0.30 纯Al 280 195 11 14 — [29] 0.50 纯Al 105 — 20 — — [42] 0.50 纯Al 165 139 21 26 18.1 [24] 177 148 30 34 18.8 0.30 Al−Mg−Cu 455 322 25 58 11.8 [32] 0.15 Al−Mg−Cu 400 262 7 22 — [39] 0.50 467 319 25 49 — 材料 石墨烯质量分数 / % 加工工艺 抗拉强度 / MPa 电导率 / %IACS 薄层石墨烯增强铝基复合材料(FLG/Al) 0 SPS+热挤压 137 62.20 0.42 833 K温度下SPS+热挤压 165 60.00 0.42 883 K温度下SPS+热挤压 177 59.80 石墨烯增强铝基复合材料(Gr/Al) 0 铸造+冷轧+200 ℃时效0 h 67 58.27 0.50 铸造+冷轧+200 ℃时效0 h 92 57.41 0.50 铸造+冷轧+200 ℃时效1 h 180 63.45 0.50 铸造+冷轧+200 ℃时效2 h 177 63.10 0.50 铸造+冷轧+200 ℃时效4 h 148 62.93 0.50 铸造+冷轧+200 ℃时效6 h 145 63.27 表 3 常见架空导线的力学及导电性能[50]
Table 3. Mechanical and electrical conductivity performance of the common overhead conductors[50]
编号 类别 牌号 名义抗拉强度,σb / MPa 名义密度,σ / (g·cm−3) 20 ℃导电率,Y / %IACS 1 铝绞线 JL-400-37 160 2.755 59.8 2 钢芯铝绞线 JL/GIA-400/25 230 3.087 55.8 3 铝包钢芯铝绞线 JL/LBIA-395/25 232 3.013 56.9 4 铝合金绞线 JLHAI-400-37 315 2.755 51.4 5 钢芯铝合金绞线 JLHAI/GIA-400/25 380 3.087 48.0 6 铝包钢芯铝合金绞线 JLHAI/LBIA-455/30 372 3.010 49.3 7 铝合金芯铝绞线 JL/LHAI-415/95 186 2.757 58.0 -
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