Title

High temperature corrosion of nanoceria coated 9Cr-1Mo ferritic steel in air and steam

Authors

Authors

T. Sundararajan; S. Kuroda; J. Kawakita;S. Seal

Comments

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Abbreviated Journal Title

Surf. Coat. Technol.

Keywords

high temperature; corrosion; nanoceria; air and steam oxidation; THERMAL SPRAY COATINGS; OXIDATION RESISTANCE; 50NI-50CR; BEHAVIOR; Materials Science, Coatings & Films; Physics, Applied

Abstract

In this article, air and steam oxidation resistance of bare and nanoceria coated 9Cr-1Mo ferritic steel at 650 degrees C for 500h is reported. The kinetics of the oxidation process and the changes in the morphology and the chemistry for both the specimens were analyzed by backscattered electron and EPMA mapping. The nanoceria coated 9Cr-1Mo ferritic steel showed better oxidation resistance than uncoated steel under similar conditions. The thickness of the oxide scales formed on the coated samples was significantly reduced as compared to the uncoated substrates. The effectiveness of such a thin and simple nanocoating to improve the oxidation resistance of 9Cr-1Mo ferritic steel compared to the pristine is attributed to the change in the migration of cations from outward to inward diffusion of oxygen as the major mechanism. (c) 2006 Elsevier B.V. All rights reserved.

Journal Title

Surface & Coatings Technology

Volume

201

Issue/Number

6

Publication Date

1-1-2006

Document Type

Article

Language

English

First Page

2124

Last Page

2130

WOS Identifier

WOS:000244831800003

ISSN

0257-8972

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