Title

High-Temperature Oxidation Behavior Of Solution Precursor Plasma Sprayed Nanoceria Coating On Martensitic Steels

Abstract

Solution precursor plasma spray (SPPS) is used to deposit nanoceria coating on a 410 martensitic stainless steel. The process of pyrolysis in converting the cerium nitrate solution to cerium oxide, the microstructure and the surface chemistry is confirmed by thermodynamic calculations, X-ray photoelectron spectroscopy (XPS) and X-ray diffraction. Subsequent exposure of the coated steel in atmospheric air to cyclic oxidation at 1000 C revealed excellent corrosion resistance of the steel in presence of the SPPS-processed nanoceria coating. The formation of the nanostructured (10-100 nm) ceria coating is studied using transmission electron microscopy. Relative Ce4+ and Ce3+ concentration in the coating was determined from XPS high-resolution spectrum. Cross-section scanning electron microscopy showed the presence of an impervious nature of the protective layer with reduced scale thickness in the coatedoxidized sample. After a pre-oxidation treatment at 1273 K of the coated specimen, the oxidation kinetics showed a significant decrease as compared with the uncoated martensitic steel. © 2007 The American Ceramic Soeiety.

Publication Date

3-1-2007

Publication Title

Journal of the American Ceramic Society

Volume

90

Issue

3

Number of Pages

870-877

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1111/j.1551-2916.2006.01463.x

Socpus ID

33847696138 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/33847696138

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