Comparative interaction of cold-worked versus annealed inconel 601 with molten carbonate salt at 450 degrees C

Madjid Saryghad; Theo Chenu; Geoffrey Will

doi:10.1016/j.corsci.2017.01.004

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Comparative interaction of cold-worked versus annealed inconel 601 with molten carbonate salt at 450 degrees C

Journal article

Peer reviewed

Comparative interaction of cold-worked versus annealed inconel 601 with molten carbonate salt at 450 degrees C

Madjid Saryghad, Theo Chenu and Geoffrey Will

Corrosion Science, Vol.116, pp.88-97

2017

DOI: https://doi.org/10.1016/j.corsci.2017.01.004

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Abstract

molten salt

superalloy

AFM

EIS

polarisation

high temperature corrosion

The interaction between Inconel 601 and the eutectic mixture of Li2CO3 + K2CO3 + Na2CO3 at 450 degrees C was investigated for thermal energy storage. Electron backscatter diffraction, optical microscopy, Volta potential, polarization and impedance measurements were used to compare the alloy behaviour in cold-worked and annealed conditions. Results showed that annealing leads to a lower corrosion rate accompanied by fewet areas of localised attack. Volta potential measurements confirmed the development of micro anodic sites on the surface in cold-worked condition which provide driving force for localised attack. These sites were found responsible for relatively higher corrosion rate and formation of meta-stable pits.

Details

Title: Comparative interaction of cold-worked versus annealed inconel 601 with molten carbonate salt at 450 degrees C
Authors: Madjid Saryghad (Corresponding Author) - Queensland University of Technology
Theo Chenu (Author) - École Nationale Supérieure d'Ingénieurs de Caen
Geoffrey Will (Author) - Queensland University of Technology
Publication details: Corrosion Science, Vol.116, pp.88-97
Publisher: Elsevier Ltd.
DOI: 10.1016/j.corsci.2017.01.004
ISSN: 1879-0496
Grant note: Australian Solar Thermal Research Initiative (ASTRI) Australian Government via the Australian Renewable Energy Agency (ARENA) Science and Engineering Faculty, QUT
Organisation Unit: School of Science, Technology and Engineering
Language: English
Record Identifier: 99737874402621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering

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