Title

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

Authors

Authors

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

Comments

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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

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