Interfacial phenomena in thermally sprayed multiwalled carbon nanotube reinforced aluminum nanocomposite

    Authors

    T. Laha; S. Kuchibhatla; S. Seal; W. Li;A. Agarwal

    Comments

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    Abbreviated Journal Title

    Acta Mater.

    Keywords

    metal matrix composite (MMC); aluminum alloy; multiwalled carbon; nanotube; thermal spraying; interfacial wetting; SINGLE-WALLED CARBON; POLYMER COMPOSITES; CONTACT ANGLES; WEAR BEHAVIOR; WETTABILITY; SYSTEMS; NANOTECHNOLOGY; SPECTROSCOPY; MECHANISMS; GRAPHITE; Materials Science, Multidisciplinary; Metallurgy & Metallurgical; Engineering

    Abstract

    The interfacial phenomena in thermally sprayed (plasma and high-velocity oxyfuel spraying) hypereutectic Al-Si composite with multiwalled carbon nanotube (MWCNT) reinforcement have been analyzed both theoretically and experimentally. The formation of an ultrathin beta-SiC reaction layer at the interface is confirmed. Plasma sprayed composite exhibits a thicker SiC layer (similar to 5 nm) than the high-velocity oxyfuel sprayed composite (similar to 2 nm). The presence of SiC layer formation is also corroborated in a chemical vapor deposition experiment where Si was deposited on MWCNTs. The formation of beta-SiC is responsible for the improved wettability of the molten Al-Si alloy matrix with MWCNT reinforcement. (C) 2006 Acta Materialia, Inc. Published by Elsevier Ltd. All rights reserved.

    Journal Title

    Acta Materialia

    Volume

    55

    Issue/Number

    3

    Publication Date

    1-1-2007

    Document Type

    Article

    Language

    English

    First Page

    1059

    Last Page

    1066

    WOS Identifier

    WOS:000246435100028

    ISSN

    1359-6454

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