Abstract

Oxidation of titanium in the temperature range 800–1200°C has been studied. In agreement with Wallwork and Jenkins 7 the initial approximate parabolic oxidation rate has been shown to be primarily associated with oxygen dissolution in the metal. When the oxygen concentration in the outer layer of the metal reaches a composition TiO 0.35, heavy oxide formation begins to take place and the oxidation eventually follows a linear oxidation rate. It is suggested that the corresponding oxidation is governed by oxide nucleation and growth of oxide nuclei. Above 950°C recrystallization and sintering of the outer layers of the TiO 2-scale take place.

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