Title

Role of spray drying of nanoagglomerates in morphology evolution in nanostructured APS coatings

Authors

Authors

V. Viswanathan; K. E. Rea; A. Vaidya;S. Seal

Comments

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Abbreviated Journal Title

J. Am. Ceram. Soc.

Keywords

ZIRCONIA COATINGS; PLASMA; POWDER; MICROSTRUCTURE; NANOCOMPOSITE; ALUMINA; Materials Science, Ceramics

Abstract

Nanostructured coatings undergo many processing challenges during atmospheric plasma spray if the feedstock is not well prepared. The effects of using spray drying on achieving a suitable feedstock for an even flow of nanoparticles through the gun, the selection of plasma gases for optimum heat transfer, and the velocity of the agglomerates during flight are highlighted in this communication. Analytical heat transfer calculations are used for coating property optimization. The physical characteristics of the nanoagglomerates are studied using diagnostics sensor and scanning electron microscopy. Transmission electron microscopy revealed the retention of nanostructures.

Journal Title

Journal of the American Ceramic Society

Volume

91

Issue/Number

2

Publication Date

1-1-2008

Document Type

Article

Language

English

First Page

379

Last Page

386

WOS Identifier

WOS:000252930100005

ISSN

0002-7820

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