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Journal of Materials
Volume 2016 (2016), Article ID 6070468, 10 pages
Research Article

Fabrication and Microhardness Analysis of MWCNT/MnO2 Nanocomposite

1Department of Mechanical Engineering, Jamia Millia Islamia, New Delhi, India
2Department of Chemistry, University of Delhi, New Delhi, India
3Mechanical & Automation Engineering Department, Indira Gandhi Delhi Technical University for Women, Delhi, India
4Department of Chemistry, G. B. Pant Govt. Engineering College, New Delhi, India

Received 17 April 2016; Accepted 11 August 2016

Academic Editor: Ching-Ping Wong

Copyright © 2016 Md. Zakir Hussain et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Recent research has shown that carbon nanotube (CNT) acts as a model reinforcement material for fabricating nanocomposites. The addition of CNT as a reinforcing material into the matrix improves the mechanical, thermal, tribological, and electrical properties. In this research paper multiwalled carbon nanotube (MWCNT), with different weight percentage (5%, 10%, and 15%), was reinforced into manganese dioxide (MnO2) matrix using solution method. The different weight % of MWCNT/MnO2 nanocomposite powders was compacted and then sintered. The phase analysis, morphology, and chemical composition of the nanocomposites were examined by X-ray diffractometer, Field Emission Scanning Electron Microscope (FESEM), and Energy Dispersive X-Ray (EDX), respectively. The XRD analysis indicates the formation of MWCNT/MnO2 nanocomposites. The FESEM surface morphology analysis shows that MnO2 nanotube is densely grown on the surface of MWCNT. Further, microhardness of MWCNT/MnO2 nanocomposite was measured and it was found that 10 wt% has higher microhardness in comparison to 5 and 15 wt%. The microhardness of the composites is influenced by mass density, nanotube weight fraction, arrangement of tubes, and dispersion of MWCNT in H2SO4(aq) solution.