第35卷第3期
2 0 1 4 年9 月
上海有色舍属
SHANGHA I NON F E R R O U S METALS
Vol. 35,No. 3
Sep. 2014
文章编号:1005 - 2046(2014)03 - 0093 - 07 D O I : 10.13258/j. cnki. snm. 2014.03.001
纳米碳管铝基复合材料组织与性能的研究
吴 振 江 ,黄 新 民 ,於 国 良 ,戴 荣 荣 ,翁 澜
(合肥工业大学材料科学与工程学院,安 徽 合 肥 230009)
摘 要 :试验采用搅拌铸造法制备了纳米碳管增强铝基复合材料,对其显微组织、硬度、抗拉
强度和电阻率进行了研究.结果表明:纳米碳管的加入能够细化复合材料晶粒,表面镀铜后可
以抑制基体与增强体之间的界面反应,避免脆性碳化物的生成;复合材料的硬度和抗拉强度随
着纳米碳管加入量的增加先增加后减小,纳米碳管的质量分数为1 . 0 % 时,达到最大值,与基
体相比分别增加了 3 4 . 8 % 和 34. 4 % ; 纳米碳管的加入对基体的导电性影响不大.
关键词:纳米碳管;铝基复合材料;组织;性能
中图分类号:T B 331 文献标志码:A
S t u d y o n M i c r o str u c t ure a n d Properties of A l u m i n u m M a t r i x
C o m p o s i t e s R e i n f or ce d b y C a r b o n N a n o t u b e s
W U Z h e n - j i a n g ,H U A N G X i n - m i n ,Y U G u o - I i a n g ,
D A I R o n g - r o n g ,W E N G L a n
( School of Meterials Science and Engineering,Hefei University
of Technoloyy,Hefei 230009,China )
Abstract : Aluminum matrix composites reinforced by carbon nanotubes were prepared by
strr casting. The microstructure,hardness, tensile strength and resistivity of aluminum
matrix composites were studied. The results show that carbon nanotubes could refine the
grain of composites and carbon nanotubes with copper plating could avoid interface
reaction between the reinforcement and the aluminum matrix,which would generate matrix
brittle carbides. With the increase of carbon nano tubes,the strength and hardness of
composites increased first and then decreased. W h e n the content of C N T s was 1. 0 % ,the
tensile strength and hardness of aluminum matrix composites reinforced by carbon
nanotubes reached the ma x i m u m value,with an increase of 34.8% and 34.4% respectively.
In addition,electric resistance test shows that carbon nanotubes had little effect on the
conductivity of the aluminum matrix.
Keywords: carbon nano tubes; aluminum matrix composites; microstructure ; property
收稿日期:2014-04- 14
作者简介:吴振江(989 - ),男,硕士研究生,主要从事高性能金属材料组织与性能方面的研究.E-mail:wuzhenjiangmydream@
163. com
通讯作者:黄新民(1955 -),男,教授,主要从事复合材料、材料设计与强化、材料组织结构分析和铝合金等方面的研究.E-mail:
xmhuang808@163. com