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Synthesis and Characterization of Nano-crystalline La2Zr2O7 Film by Reactive Spray Deposition Technology for Application in Thermal Barrier Coatings

Published online by Cambridge University Press:  07 February 2017

Yang Wang*
Affiliation:
University of Connecticut, 97 North Eagleville Road, Storrs, CT 06269-3136
Rishi Kumar
Affiliation:
University of Connecticut, 97 North Eagleville Road, Storrs, CT 06269-3136
Justin Roller
Affiliation:
FEI Company, 5350 NE Dawson Creek Drive, Hillsboro, OR 97124
Radenka Maric
Affiliation:
University of Connecticut, 97 North Eagleville Road, Storrs, CT 06269-3136
*
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Abstract

Lanthanum zirconate (La2Zr2O7) nano-crystalline films with cubic structure have been successfully prepared by a facile synthesis approach called reactive spray deposition technology (RSDT). La2Zr2O7 nanoparticles are produced by combusting a precursor solution of lanthanum acetylacetonate hydrate and zirconium acetylacetonate dissolved in an organic solvent mixture. The nanoparticles formed during the combustion process are directly deposited onto the substrate. The composition and microstructure of the as-deposited films are extensively characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscope (TEM). The thermal diffusivities of the films are investigated by the means of laser flash method.

Type
Articles
Copyright
Copyright © Materials Research Society 2017 

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