Advances in Materials
Volume 2, Issue 1, February 2013, Pages: 1-5
Received: Jan. 19, 2013;
Published: Feb. 20, 2013
Views 2890 Downloads 180
B. Thirumaran, Department of Metallurgical and Materials Engineering, National Institute of Technology, Tiruchirappalli
S. Natarajan, Centre of Excellence in Corrosion and Surface Engineering, National Institute of Technology, Tiruchirappalli
S. P. Kumaresh, Centre of Excellence in Corrosion and Surface Engineering, National Institute of Technology, Tiruchirappalli
Carbon nanotubes reinforced AA 7075 alloy was fabricated by powder metallurgy route. Multi-walled carbon nanotubes (MWCNTs) were synthesized by electric arc discharge method. Different mass fraction of CNTs was added to the AA 7075 and the powder mixtures were consolidated using uniaxial press. The consolidated samples were sintered at 600˚ C in inert atmosphere followed by hot compaction at 450˚ C. The electrochemical corrosion behaviour of AA 7075 and CNT reinforced AA 7075 was studied using Electrochemical Polarization Technique (ACM Gill) and Electrochemical Impedance Technique. The relative densities of the composites were measured. The phase analysis and surface morphology of the composites were done by XRD and scanning electron microscope (SEM). The corrosion behaviour of the composites and the possible mechanism for the effect of CNT in the properties have been studied in detail in this paper.
S. P. Kumaresh,
Corrosion Behaviour of CNT Reinforced AA 7075 Nanocomposites, Advances in Materials.
Vol. 2, No. 1,
2013, pp. 1-5.
Ijima, "Helical microtubules of graphitic carbon," Nature, , pp.354–56, 1991.
D.M. Aylor and P.J. Moran, J. Eletrochem. Soc., 132 , pp.1277, 1985.
P.P. Trzaskoma, E. McCafferty and C.R. Crowe, J. Elee-tro-chem. Soc., vol. 130, 1804, 1983.
K. Noda, H. Ono, H. Tsuru, H. Tezuka and A. Kamio, J. Jpn. Inst. Met., vol. 56, 641,1992.
H. Sun, E.Y. Koo and H.G. Wheat, Corrosion, 47, 741, 1991.
M.M. Buarzaigaand S.J. Thorpe, Corrosion, 50, 176, 1994.
P.P. Trzaskoma, Corrosion, 46, 402, 1990.
W.F. Czyrklis, presented at CORROSION/85, paper No.196, 1985.
D.M. Aylor and R.M. Kain, ASTM STP, vol. 864,pp.632, 1983.
L.H. Hihara and R.M. Latanision, Corrosion, vol. 48, 546, 1992.
M.S.SenthilSaravanan, S.P.KumareshBabu, K.Sivaprasad and S.Jagannatham, Intl.J.Engg.Sci.Ttech., vol. 2, pp.100, 2010.
J.Kastner et al., "Resonance Raman and infrared spectroscopy of carbon nanotubes," Chem. Phys. Let., vol. 221, pp. 53–58, 1994.
A.M. Rao et al., "Diameter-selective Raman scattering from vibrational modes in carbon nanotubes," Science, vol. 275, pp. 187–190, 1997.
A. Jorio, "Polarized Raman Study of Single-Wall Semi-con-ducting Carbon Nanotubes," Phys. Rev. Lett., vol. 85, pp. 2617, 2000.
Thomsen, C., "Second-order raman spectra of single and multi-walled carbon nanotubes," Phys. Rev. B, vol. 61, pp. 4542–4544, 2000.
Weifeng Xu, Jinhe Liu, "Microstructure and pitting corrosion of Friction stir welded joints in 2219-O Alumiunum alloy thick plate," Corrosion Science, Elsevier, vol.51, pp. 2743–275, 2009.