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    Micro/Nanostructure and tribological characteristics of pressureless sintered carbon nanotubes reinforced aluminium matrix composites

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    Authors
    Manikandan, Paramasivan
    Sieh, Raymond
    Elayaperumal, A.
    Le, Huirong cc
    Basu, Sourajyoti
    Affiliation
    Anna University, India
    Plymouth University, United Kingdom
    University of Derby
    Issue Date
    2016-03-30
    
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    Abstract
    This study reports the manufacture, microstructure, and tribological behaviour of carbon nanotube reinforced aluminium composites against pure aluminium. The specimens were fabricated using powder metallurgy method. The nanotubes in weight percentages of 0.5, 1.0, 1.5, and 2.0 were homogeneously dispersed and mechanically alloyed using a high energy ball milling. The milled powders were cold compacted and then isothermally sintered in air. The density of all samples was measured using Archimedes method and all had a relative density between 92.22% and 97.74%. Vickers hardness increased with increasing CNT fraction up to 1.5 wt% and then reduced. The microstructures and surfaces were investigated using high resolution scanning electron microscope (SEM). The tribological tests showed that the CNT reinforced composites displayed lower wear rate and friction coefficient compared to the pure aluminium under mild wear conditions. However, for severe wear conditions, the CNT reinforced composites exhibited higher friction coefficient and wear rate compared to the pure aluminium. It was also found that the friction and wear behaviour of CNT reinforced composites is significantly dependent on the applied load and there is a critical load beyond which CNTs could have adverse impact on the wear resistance of aluminium.
    Citation
    . Manikandan, R. Sieh, A. Elayaperumal, H. R. Le, and S. Basu, “Micro/Nanostructure and Tribological Characteristics of Pressureless Sintered Carbon Nanotubes Reinforced Aluminium Matrix Composites,” Journal of Nanomaterials, vol. 2016, Article ID 9843019, 10 pages, 2016. doi:10.1155/2016/9843019
    Journal
    Journal of Nanomaterials
    URI
    http://hdl.handle.net/10545/615638
    DOI
    10.1155/2016/9843019
    Additional Links
    http://www.hindawi.com/journals/jnm/2016/9843019/
    Type
    Article
    Language
    en
    ISSN
    1687-4110
    1687-4129
    ae974a485f413a2113503eed53cd6c53
    10.1155/2016/9843019
    Scopus Count
    Collections
    Department of Mechanical Engineering & the Built Environment

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