Molybdenum Texture Effect on High Temperature Oxidation Resistance of Cr/Mo-Coated Zr–1Nb Alloy

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The effect of the crystal structure of the Mo sublayer on the resistance of the Zr–1Nb zirconium alloy with a Cr/Mo coating to high-temperature oxidation in air were studied. Three types of coating were deposited by magnetron sputtering: a single-layer Cr coating with a thickness of 8 μm, bilayer coatings with a Mo sublayer (3 μm) of various textures and an outer protective Cr layer (8 μm). Different textures of molybdenum layers were formed by changing the configuration of the magnetron sputtering system. Coated samples were oxidized in an atmospheric furnace at 1100°C for 15, 30, 45 and 60 min. The results of X-ray diffraction and scanning electron microscopy showed that applying Mo sublayer limited the Cr–Zr interdiffusion. Diffusion of Mo leads to the formation of interdiffusion layers Cr–Mo and Mo–Zr. Faster diffusion is observed at the Cr–Mo interface. The thickness of the residual Cr layer in bilayer coatings is greater than in a single-layer one under similar oxidation conditions.

Sobre autores

A. Abdulmenova

National Research Tomsk Polytechnic University

Autor responsável pela correspondência
Email: ava75@tpu.ru
Russia, 634050, Tomsk

M. Syrtanov

National Research Tomsk Polytechnic University

Autor responsável pela correspondência
Email: maxim-syrtanov@mail.ru
Russia, 634050, Tomsk

E. Kashkarov

National Research Tomsk Polytechnic University

Email: maxim-syrtanov@mail.ru
Russia, 634050, Tomsk

D. Sidelev

National Research Tomsk Polytechnic University

Email: maxim-syrtanov@mail.ru
Russia, 634050, Tomsk

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Declaração de direitos autorais © А.В. Абдульменова, М.С. Сыртанов, Е.Б. Кашкаров, Д.В. Сиделев, 2023