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Oxidation behaviour of selected Ni- and Fe- based superalloys in air at 900°C under cyclic conditions

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Abstract

Oxidation behavior of Ni- and Fe- based superalloys has been studied in air at 900°C under cyclic conditions. The mass change measurement with time was used to establish the oxidation kinetics. The oxide scales formed on the surface of the superalloys were characterised by various techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDAX) analyses. The oxide scales formed on the superalloys contained NiO, Cr2O3 and Fe2O3. The scales were adherent and only microspalling was observed. Superfer 800 has provided best resistance to oxidation among the alloys studied.

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Authors and Affiliations

  1. Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India

    R. A. Mahesh, R. Jayaganthan & S. Prakash

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  1. R. A. Mahesh
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  2. R. Jayaganthan
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  3. S. Prakash
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Correspondence to R. Jayaganthan.

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Mahesh, R.A., Jayaganthan, R. & Prakash, S. Oxidation behaviour of selected Ni- and Fe- based superalloys in air at 900°C under cyclic conditions. Trans Indian Inst Met 61, 45–49 (2008). https://doi.org/10.1007/s12666-008-0064-8

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  • DOI: https://doi.org/10.1007/s12666-008-0064-8

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