Interface in carbon nanotube reinforced aluminum silicon composites: Thermodynamic analysis and experimental verification

    Authors

    S. R. Bakshi; A. K. Keshri; V. Singh; S. Seal;A. Agarwal

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    Abbreviated Journal Title

    J. Alloy. Compd.

    Keywords

    Metal matrix composites; Surfaces and interfaces; Carbon nanotubes; Thermodynamics; Carbide; MATRIX COMPOSITES; MECHANICAL-PROPERTIES; SURFACE-TENSION; AL; COMPOSITES; PLASMA; FIBER; NANOCOMPOSITE; ALLOY; FABRICATION; STRENGTH; Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy &; Metallurgical Engineering

    Abstract

    Interface in carbon nanotubes (CNTs) reinforced aluminium-silicon composites are studied via thermodynamic and kinetic analysis. A pseudo-phase diagram has been generated based on the thermodynamic calculations to predict the type of carbide (Al(4)C(3) or SiC) that would form at the matrix-CNT interface as a function of matrix composition and processing temperature. The pseudo-phase diagram is useful in high temperature processes like thermal spray forming. Critical thickness values for carbide nucleation suggest the formation of Al(4)C(3) with Al-11.6 wt.% Si alloy and SiC with Al-23 wt.% Si alloy. Thermodynamic calculations show that the amount of Al(4)C(3) increases with an increase in the CNT content. The computed results perfectly agree with the results obtained by XRD, SEM of fracture surface and high-resolution transmission electron microscopy (HRTEM) observations on Al-11.6 wt.% Si and Al-23 wt.% Si alloy reinforced with CNT. (C) 2009 Elsevier B.V. All rights reserved.

    Journal Title

    Journal of Alloys and Compounds

    Volume

    481

    Issue/Number

    1-2

    Publication Date

    1-1-2009

    Document Type

    Article

    Language

    English

    First Page

    207

    Last Page

    213

    WOS Identifier

    WOS:000267798700049

    ISSN

    0925-8388

    Share

    COinS