Title

Structural transformations in carbon nanotubes during thermal spray processing

Authors

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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