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Hot-salt oxidation characteristics of titanium aluminides

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Abstract

The oxidation and hot-salt corrosion of a Ti–46%Al, 1.8%Nb, 1.9%Cr (at%) alloy were investigated in the temperature range 700–800°C. Oxidation tests were carried out using thermogravimetric analysis and show parabolic oxidation after 30 h for salt-coated and uncoated samples. Oxide-scale morphologies were examined using scanning electron microscopy and X-ray diffraction for various oxidation times. The X-ray data reveal the presence of rutile, alumina and NaTiO2 as surface oxides. For quantitative analysis, the cross-sections of the specimens were analysed by energy dispersive X-ray analysis. © 1998 Kluwer Academic Publishers

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Authors and Affiliations

  1. Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, CB2 3QZ, UK jal4@cus.cam.ac.uk

    S. V. Kumari & J. A. Little

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  1. S. V. Kumari
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  2. J. A. Little
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Kumari, S.V., Little, J.A. Hot-salt oxidation characteristics of titanium aluminides. Journal of Materials Science 33, 4315–4319 (1998). https://doi.org/10.1023/A:1004491622229

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