TITLE:
Mechanically Alloyed Carbon Nanotubes (CNT) Reinforced Nanocrystalline AA 4032: Synthesis and Characterization
AUTHORS:
M.S. Senthil Saravanan, S.P. Kumaresh Babu, K. Sivaprasad
KEYWORDS:
Multi walled carbon nanotubes, Nanocrystalline, AA 4032, XRD, SEM and TEM
JOURNAL NAME:
Journal of Minerals and Materials Characterization and Engineering,
Vol.9 No.11,
November
20,
2010
ABSTRACT: Powder metallurgy has emerged as a promising technique to develop carbon nanotubes
reinforced metal matrix composites. In this work, high energy ball mill was used to disperse
multi-walled carbon nanotubes in AA 4032 alloy. The nanocrystalline nature of AA 4032 was
obtained by milling the elemental powders for 30 hours. Different mass fractions of carbon
nanotubes were added in the matrix at end of 29th hour. The phase evolution and changes in
crystallite size and lattice strain were analyzed using X- ray diffractometer (XRD). SEM analysis
reveals the morphological changes during the milling process. Transmission electron
microscopy (TEM) studies reveal the presence of CNTs in the matrix and evidenced the uniform
distribution of CNTs inside the matrix.