Abstract

A layer-by-layer x-ray diffraction phase analysis was made of the scale formed on Ni3Ti during atmospheric oxidation over the temperature range 600–1000°C. The scale was found to contain the oxides NiO, NiO · TiO2, TiO2 (rutile), Ti3O5, and Ti2O3 as well as two nickel phases — “pure” nickel and a nickel solid solution. The pattern of distribution of these phase constituents in consecutive scale layers is outlined.

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