Summary
The influence of implanted yttrium on the oxidation behaviour of a ferritic Fe-23Cr-5Al+0.2Zr alloy was studied between 1473 K and 1600 K under isothermal and thermal cycling conditions in oxygen and in air, respectively. The microstructure and morphology of the starting material as well as of the scales were studied by means of optical and scanning electron microscopy. The composition of the alloy and of the scales was determined using various X-ray techniques. The oxidation mechanism was studied at 1473 K using the two-stage oxidation method in 18O/16O atmospheres. The implanted yttrium was found to affect the scale growth rate and the oxidation mechanism as well as the scale morphology. No spalling of the scale under thermal cycling conditions occurred. The observed growth mechanism of the scales was related to their complex morphology.
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On leave from: Institute of Materials Science, Academy of Mining and Metallurgy, Krakow, Poland
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Jedlinski, J., Borchardt, G. & Riediger, C. The effect of implanted yttrium on the oxidation behaviour at high temperatures of a Fe-Cr-Al alloy containing zirconium. Fresenius J Anal Chem 341, 432–435 (1991). https://doi.org/10.1007/BF00321951
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DOI: https://doi.org/10.1007/BF00321951