一种碳纳米管增强的铜基块体非晶合金复合材料

摘要

采用热压成型法制备碳纳米管增强的Cu50Zr40Ti10非晶合金复合材料,并研究碳纳米管添加量对其密度、热导率和力学性能的影响.结果发现,随着碳纳米管含量的增加,块体非晶合金复合材料的密度和抗压强度都降低;当碳纳米管的含量少于0.1％或超过0.6％时,块体非晶合金复合材料的热导率随着碳纳米管含量的增加而降低,然而,当碳纳米管的含量介于0.1％和0.6％之间时,块体非晶合金复合材料的热导率随着碳纳米管含量的增多而增大;当碳纳米管的含量少于1.0％时,块体非晶合金复合材料的应变量与模量明显得到提高,并随着碳纳米管含量的进一步增加块体非晶合金复合材料的应变量与模量明显下降.综合各种性能得出,碳纳米管的添加量少于0.2％为宜.%Bulk Cu50Zr40Ti10 amorphous alloy composites reinforced with carbon nanotube(CNT)were successfully fabricated by hot pressing technique.Their density,thermal conductivity,and mechanical properties were systemically investigated.The density and the compression strength of the compacts both decrease with increasing CNT content.The thermal conductivity of the compacts decreases when the CNT content is less than 0.10％ or exceeds 0.60％(mass fraction),while increases when the CNT content is in the range of 0.1％-0.6％.The strain limit and the modulus of the compacts are obviously improved when the CNT content is less than 1.0％ and then decrease significantly when the CNT content exceeds 1.00％.The optimum CNT addition is less than 0.20％ at the comprehensive properties point of view.