A Diffusion Controlling Duplex-Layer Oxidation Model with Scale Removal in Oxygen Containing Liquid Metal Flow

Document Type

Article

Publication Date

12-2008

Publication Title

Computational Materials Science

Volume

44

Issue

2

First page number:

750

Last page number:

759

Abstract

Scale removal effect makes the high temperature oxidation in liquid metal flow environments very complicated, together with the selective corrosion and/or oxidation caused by the alloy components and metallurgical impurities. A diffusion controlling duplex-layer oxidation model, considering scale removal, has been developed in an oxygen-containing liquid metal environment. The volume change caused by the Pilling–Bedworth ratio, the redistribution of the noble components and impurities is coupled with the weight gain during oxidation. The derived governing equations, after coordinate transform, are analogized with the Stefan problem and solved by the finite difference method. Extension schemes for multiple layer structure are analyzed. The developed model is benchmarked with previous results and experimental data, and good agreement is obtained.

Keywords

Descaling; Diffusion-controlling; Duplex-layer; High temperatures; Liquid metals; Metal flow; Model; Oxidation; Scale removal

Disciplines

Acoustics, Dynamics, and Controls | Materials Science and Engineering | Mechanical Engineering | Nuclear Engineering

Language

English

Permissions

Use Find in Your Library, contact the author, or interlibrary loan to garner a copy of the item. Publisher policy does not allow archiving the final published version. If a post-print (author's peer-reviewed manuscript) is allowed and available, or publisher policy changes, the item will be deposited.

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