Insight into reactions and interface between boron nitride nanotube and aluminum

    Authors

    D. Lahiri; V. Singh; L. H. Li; T. Xing; S. Seal; Y. Chen;A. Agarwal

    Comments

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    Abbreviated Journal Title

    J. Mater. Res.

    Keywords

    MECHANICAL-PROPERTIES; CARBON NANOTUBES; MATRIX COMPOSITES; ELASTIC-MODULUS; GROWTH; FILMS; MICROSTRUCTURE; FABRICATION; BEHAVIOR; Materials Science, Multidisciplinary

    Abstract

    Nature and mechanism of interfacial reactions between boron nitride nanotubes (BNNTs) and aluminum matrix at high temperature (650 degrees C) are studied using high-resolution transmission electron microscopy (HRTEM). This study analyzes the feasibility of the use of BNNTs as reinforcement in aluminum matrix composites for structural application, for which interface plays a critical role. Thermodynamic comparison of aluminum (Al)-BNNT with analogous Al-carbon nanotube (Al-CNT) system reveals lesser amount of reaction in the former. Experimental observation also reveals thin (similar to 7 nm) reaction-product formation at Al-BNNT interface even after 120 min of exposure at 650 degrees C. The spatial distribution of the reaction-product species at the interface is governed by the competitive diffusion of N, Al, and B. Morphology of the reaction products are influenced by their orientation relationship with BNNT walls. A theoretical prediction on Al-BNNT interface in macroscale composite suggests the formation of strong bond between the matrix and reinforcement phase.

    Journal Title

    Journal of Materials Research

    Volume

    27

    Issue/Number

    21

    Publication Date

    1-1-2012

    Document Type

    Article

    Language

    English

    First Page

    2760

    Last Page

    2770

    WOS Identifier

    WOS:000310706100008

    ISSN

    0884-2914

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