Title

Precursor Dependent Microstructure Evolution And Nonstoichiometry In Nanostructured Cerium Oxide Coatings Using The Solution Precursor Plasma Spray Technique

Abstract

A solution precursor plasma spray (SPPS) technique has been used for direct deposition of cerium oxide nanoparticles (CNPs) from various cerium salt solutions as precursors. Solution precursors were injected into the hot zone of a plasma plume to deposit CNP coatings. A numerical study of the droplet injection model has been employed for microstructure development during SPPS. The decomposition of each precursor to cerium oxide was analyzed by thermogravimetric-differential thermal analysis and validated by thermodynamic calculations. The presence of the cerium oxide phase in the coatings was confirmed by X-ray diffraction studies. Transmission electron microscopy studies confirmed nanocrystalline (grain size <14 nm) characteristic of the coatings. X-ray photoelectron spectroscopy studies indicated the presence of a high concentration of Ce3+ (up to 0.32) in the coating prepared by SPPS. The processing and microstructure evolution of cerium oxide coatings with high nonstoichiometry are reported. © 2010 The American Ceramic Society.

Publication Date

11-1-2010

Publication Title

Journal of the American Ceramic Society

Volume

93

Issue

11

Number of Pages

3700-3708

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1111/j.1551-2916.2010.03985.x

Socpus ID

78549289919 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/78549289919

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