• CN:11-2187/TH
  • ISSN:0577-6686

›› 2013, Vol. 49 ›› Issue (18): 52-56.

• 论文 • 上一篇    下一篇



  1. 北京科技大学材料科学与工程学院
  • 发布日期:2013-09-20

Performance Study of Copper Matrix Composite Materials with CNTs, Al2O3 Double Reinforced by Powder Metallurgy Method

CUI Zhaowen;LI Jingren;LI Zezhou;ZENG Shixuan;YAN Hong;JIANG Likun;JIA Chengchang   

  1. School of Materials Science and Engineering, University of Science and Technology Beijing
  • Published:2013-09-20

摘要: 为提高铜基复合材料的综合性能,采用磁力搅拌法混合、放电等离子体烧结工艺制备碳纳米管(CNTs)/氧化铝(Al2O3)/铜基复合材料。对试样进行场发射扫描电镜表征,测试试样的硬度、导电性、导热性、摩擦因数等性能。结果表明,CNTs和Al2O3在铜基体中实现了均匀分布。当添加0.5%CNTs和3.5%Al2O3时制备所得铜基复合材料的综合性能较好:致密度为98.4%;布氏硬度为83.52 N/mm2,比纯铜提高了33.2%;平均摩擦因数为0.106,与纯铜相比降低了47%;热导率为184.99 W/(m•K),电导率为4.93×107 Ω–1•m–1,电导率达到91.5% IACS。

关键词: 碳纳米管, 铜基复合材料, 氧化铝

Abstract: Carbon nanotubes(CNTs)/alumina(Al2O3)/copper matrix composite materials by magnetic stirring process(MS) and spark plasma sintering(SPS) technology are studied. The characterization of specimens is carried out by field emission scanning electron microscopy. And then Brinell hardness, electrical conductivity, thermal conductivity and wear resistance performance are tested. The results show that CNTs and Al2O3 obtained uniform dispersion within Cu matrix. The copper matrix composite has the best comprehensive performance when adding 0.5% CNTs and 3.5%Al2O3. The relative density is 98.4%. Brinell hardness is 83.52 N/mm2 and average friction coefficient is 0.106, increases by 33.2% and decreases by 47% compared with pure Cu respectively. The thermal conductivity is 184.99 W/(m•K). The electrical conductivity is 4.93×107 Ω-1•m-1, equivalent to 91.5% IACS.

Key words: Al2O3, CNTs, Copper matrix composite materials