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Trans Tech Publications, Materials Science Forum, (844), p. 3-6

DOI: 10.4028/www.scientific.net/msf.844.3

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High-Temperature Corrosion of NiCrAlY/YSZ Coatings in Ar-1%SO<sub>2</sub> Gas

Journal article published in 2016 by Poonam Yadav, Muhammad Ali Abro, Dong Bok Lee
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

The thermal barrier coating that consisted of ZrO2-8Y2O3 top-coat and Ni-22Cr-10Al-1Y bond-coat corroded in Ar-1%SO2 gas at 1000-1200°C for up to 300 h. The top-coat and bond-coat consisted primarily of β-ZrO2 and (γ-Ni, α-Al2O3), respectively. During corrosion, Al oxidized preferentially to α-Al2O3 to protect TBC, and sulfidation occurred to a small extent.