期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2012
卷号：1
期号：2
页码：206
出版社：S&S Publications
摘要：The present paper illustrates mixing procedures for Al-CNTs powder preparation alongside depiction of the CNTsdispersion results from the different mixing techniques. XRD analysis showed that the mean grain size of powders milled for 6h was found to be 48.4 nm and for extrudates of CNT-Al, it is 56.6 nm. Based on the geometry and physical properties ofmultiwalled nanotubes, three strengthening mechanisms were considered for CNT/Al composite system. It was evident from thetesting that as the content of nanotubes in the matrix increased, the micro-hardness measured on the Vickers scale alsoincreased. The investigation of the damping behaviour of 2024Al-CNT composite showed that the damping capacity of thecomposite with a frequency of 0.5 Hz reaches 975 x 10-3, and the storage modulus is 82.3 GPa when the temperature is 400˚ C,which shows that CNTs are a promising reinforcement for metal matrix composites to obtain high damping capabilities at anelevated temperature without sacrificing the mechanical strength and stiffness of a metal matrix.
