Structural transformations in carbon nanotubes during thermal spray processing

    Authors

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

    Abbreviated Journal Title

    Surf. Coat. Technol.

    Keywords

    Carbon nanotubes (CNTs); Plasma spraying (PS); High-velocity oxy fuel; spraying (HVOF); Cold spraying (CS); Plasma spraying of liquid precursor; (PSLP); REINFORCED ALUMINUM COMPOSITE; BARRIER COATINGS; NANOCOMPOSITES; MATRIX; SINGLE; CONDUCTIVITY; DEFORMATION; MECHANISMS; BEHAVIOR; Materials Science, Coatings & Films; Physics, Applied

    Abstract

    This study compares the interaction of carbon nanotubes (CNTs) with the flame/energy sources during different thermal spray processes viz. plasma spraying (PS), high-velocity oxy fuel spraying (HVOF), cold spraying (CS), and plasma spraying of liquid precursor (PSLP). CNTs were successfully retained as reinforcement in metal and ceramic composite coatings in all thermal spray processes except PSLP The retention of CNT structure is attributed to micron size metal/ceramic powder which acts as a carrier and thermal shield against high heat in plasma spraying (PS) and high-velocity oxy fuel spraying (HVOF). However, vaporization of CNTs occurred in PSLP under the intense heat of the plasma which is attributed to phase transformation in unshielded CNTs. (C) 2009 Elsevier B.V. All rights reserved.

    Journal Title

    Surface & Coatings Technology

    Volume

    203

    Issue/Number

    16

    Publication Date

    1-1-2009

    Document Type

    Article

    Language

    English

    First Page

    2193

    Last Page

    2201

    WOS Identifier

    WOS:000265875200004

    ISSN

    0257-8972

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