Synthesis, Structure, and Electrochemical Properties of a New Lithium Iron Oxide, LiFeO2, with a Corrugated Layer Structure

1 August 1996

journal article
Published by The Electrochemical Society in Journal of the Electrochemical Society

Vol. 143 (8) , 2435-2442
https://doi.org/10.1149/1.1837027

Abstract

The early oxidation (t ≦ 120 min) of AISI 430 stainless steel has been investigated by thermal gravimetric analysis and Auger electron spectroscopy. It is found that the oxidation can be divided into two regions: one is a rapid growth rate for t ≦ 5 min and the other is a parabolic or slower growth rate for t ≧ 5 min. Through analysis of the components of the oxide film and mathematical modeling, a critical temperature, T _c, above which a chromium‐rich oxide film is formed is determined to be 947 K. The corrosion resistance of the oxidized metal is enhanced at T ≧ T _c, but is worse at T < T _c. Formation of a protective chromium‐rich oxide film on this metal is considered to be a dominant factor in improving corrosion resistance.

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