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首页> 外文期刊>Materials Science and Engineering >Synthesis and properties of Al-AlN-CuCNT and Al-Y_2W_3O_(12)-CuCNT hybrid composites
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Synthesis and properties of Al-AlN-CuCNT and Al-Y_2W_3O_(12)-CuCNT hybrid composites

机译：Al-Aln-CUCNT和Al-Y_2W_3O_（12）的合成与性能 - CCUCNT杂交复合材料

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摘要

The effect of the addition of various amounts (1, 2 and 4 wt%) of copper-coated multi walled carbon nanotubes (CuCNT) on the mechanical (hardness, compressive strength and elastic modulus) and thermal (thermal conductivity and coefficient of thermal expansion) properties of two sets of aluminium matrix hybrid composites (AMHCs), i.e., Al- 30 wt % A1N and Al-30 wt % Y_2W_3O_(12) has been investigated. The CNTs and AMHCs are fabricated using the molecular-level mixing and powder metallurgy route, respectively. The TEM analysis reveals that the CNTs are effectively coated with copper. The SEM characterization reveals that the CuCNTs are uniformly dispersed in the aluminium matrix. Experimental results reveal that the addition of CuCNT into the AMHCs increases the hardness, compressive strength, elastic modulus and thermal conductivity. Dilatometry studies reveal that the thermal stability of both the AMHCs increases with an increase in the amount of CuCNT as well as the number of thermal cycles. The coefficient of thermal expansion also decreases significantly with an increase in the amount of CuCNT in both the AMHCs.
机译：在机械（硬度，抗压强度和弹性模量）上添加各种量（1,2和4wt％）铜涂覆的多壁碳纳米管（CUCNT）的效果和热（导热率和热膨胀系数）已经研究了两组铝基杂交复合材料（AMHC）的性质，即Al-30wt％A1N和Al-30wt％Y_2W_3O_（12）。使用分子水平混合和粉末冶金途径制造CNT和AMHC。 TEM分析表明，CNT有效地涂有铜。 SEM表征揭示了CUCNT均匀地分散在铝基中。实验结果表明，CUCNT进入AMHC的添加增加了硬度，抗压强度，弹性模量和导热率。抗扩张测定的研究表明，两种AMHC的热稳定性随着CUCNT量的增加而增加，以及热循环的数量。热膨胀系数也随着AMHC中的CUCNT量的增加而显着降低。

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