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1964•Journal of The Electrochemical SocietyOpen access

The Mechanism of Oxidation of Zirconium in the Temperature Range 400°–850°C

R. J. Hussey, W. W. Smeltzer

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Abstract

A study of the oxidation mechanism for zirconium in the temperature range 400°–850°C, based on examination of the oxide scale growth and oxygen gradients in the metal substrate, is reported. The oxidation kinetics at long times obeyed a parabolic rate equation which was best described in terms of a diffusion model for oxygen diffusion in both the oxide and metal. From the determination of the oxygen gradients, the diffusion constant was evaluated for oxygen diffusion in alpha‐zirconium.

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A study of the oxidation mechanism for zirconium in the temperature range 400°–850°C, based on examination of the oxide scale growth and oxygen gradients in the metal substrate, is reported. The oxidation kinetics at long times obeyed a parabolic rate equation which was best described in terms of a diffusion model for oxygen diffusion in both the oxide and metal. From the determination of the oxygen gradients, the diffusion constant was evaluated for oxygen diffusion in alpha‐zirconium.

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Available abstract

A study of the oxidation mechanism for zirconium in the temperature range 400°–850°C, based on examination of the oxide scale growth and oxygen gradients in the metal substrate, is reported. The oxidation kinetics at long times obeyed a parabolic rate equation which was best described in terms of a diffusion model for oxygen diffusion in both the oxide and metal. From the determination of the oxygen gradients, the diffusion constant was evaluated for oxygen diffusion in alpha‐zirconium.

Key concepts: Zirconium, Mechanism (biology), Atmospheric temperature range, Materials science, Range (aeronautics), Chemistry, Chemical engineering, Metallurgy

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