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Influence of a mixed Al2O3+Cr2O3 superficial coating on the non-isothermal oxidation behavior of Fe and Fe-Cr alloys

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Abstract

The non-isothermal oxidation behavior of electrolytic-grade iron and Fe-Cr alloys in dry air has been studied using linear heating rates of 6 K/min, 10 K/ min, and 15 K/min up to a final temperature of 1273–1473 K. Some of the iron and iron-chromium alloy samples were given a surface treatment by dipping them in an aqueous solution containing both Cr and Al ions before their oxidation studies. This pretreatment has resulted in improved oxidation resistance and scale adherence as depicted by no scale rupture even after a second thermal cycle. Mass changes were recorded gravimetrically, and scales have been characterized by SEM, EPMA, and x-ray diffraction analyses.

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Authors and Affiliations

  1. Metallurgical Engineering Department, Regional Engineering College, 713209, Durgapur, India

    S. K. Mitra

  2. Laboratoire Science des Surfaces et Matériaux Carbonés, ENSEEG-INPG, Domaine Universitaire, B.P. 75, 38402, Saint-Martin D'Heres Cédex, France

    S. K. Roy

  3. Metallurgical Engineering Department, Indian Institute of Technology, 721302, Kharagpur, India

    S. K. Bose

Authors
  1. S. K. Mitra
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  2. S. K. Roy
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  3. S. K. Bose
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Mitra, S.K., Roy, S.K. & Bose, S.K. Influence of a mixed Al2O3+Cr2O3 superficial coating on the non-isothermal oxidation behavior of Fe and Fe-Cr alloys. Oxid Met 37, 95–108 (1992). https://doi.org/10.1007/BF00665633

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  • DOI: https://doi.org/10.1007/BF00665633

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