Journal of Advanced Materials and Technologies

Journal of Advanced Materials and Technologies

Investigation of magnetic and electrical properties of Cu30-Ni70/CNT nanocomposite produced by mechanical alloying

Authors
P. Bakhshaei
H. Abdizadeh
A. Ataie
School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran, Iran
10.30501/jamt.2635.70249
Abstract
In this study, Cu30-Ni70 alloy were synthesized by mechanical alloying. Different concentrations of carbon nanotubes were then distributed in the alloy to fabricate Cu-Ni/CNT nanocomposites. X-ray diffraction, scanning electron microscopy, vibrating sample magnetometer and 4point probe standard techniques were used to investigate the characteristics of the samples. XRD results of the alloy sample revealed that, homogeneous Cu30-Ni70 alloy was formed after 5 h of milling. The SEM micrographs of the specimens showed that CNTs have a significant effect on structural refinement of the nanocomposites. The finest microstructure was obtained in the sample containing 5 wt% CNTs. Decreasing the electrical resistivity values of the nanocomposites due to increasing the CNT contents showed that CNTs have been uniformly distributed in the samples. More ever, the distribution of CNTs in the matrix decreases the saturation magnetization and increases the coercivity of the nanocomposites.
Keywords
Nanocomposites
Carbon nanotubes
Cu-Ni alloy
Mechanical alloying
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Journal of Advanced Materials and Technologies
Volume 3, Issue 1
Spring 2014
Pages 29-36

  • Receive Date 26 April 2014
  • Revise Date 05 May 2014
  • Accept Date 18 May 2014