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Corrosion Mechanism of Haynes 230 Alloy with Ni Crucible in MgCl2–KCl

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Applications of Process Engineering Principles in Materials Processing, Energy and Environmental Technologies

Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

Abstract

The long-term corrosion behavior of Haynes 230 (H230) alloy in MgCl2–KCl eutectic salt was evaluated at 1273 K for 500 h in Ni crucible in argon gas. The results showed H230 alloy has good corrosion resistance. In addition, corrosion was noted to occur by depletion of Cr, which was deposited on the Ni crucible. Based on the calculation of Gibbs energy of Ni-Cr alloy and exchange current density of Cr in MgCl2–KCl, the Tafel model was constructed to investigate the corrosion potential and rate. The galvanic corrosion can be explained as the predicted results were in agreement with the experimental data.

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Authors and Affiliations

  1. Department of Metallurgical and Materials Engineering, The University of Alabama, Tuscaloosa, AL, 35487, USA

    Yuxiang Peng & Ramana G. Reddy

Authors
  1. Yuxiang Peng
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  2. Ramana G. Reddy
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Corresponding author

Correspondence to Ramana G. Reddy .

Editor information

Editors and Affiliations

  1. Rio Tinto Kennecott Utah Copper , Magna, Utah, USA

    Shijie Wang

  2. University of Utah , Salt Lake City, Utah, USA

    Michael L Free

  3. The University of Saskatchewan , Saskatoon, Saskatchewan, Canada

    Shafiq Alam

  4. ArcelorMittal Global R&D , Schereville, Indiana, USA

    Mingming Zhang

  5. Colorado School of Mines, George S. Ansell Chair Colorado School of Mines, Golden, Colorado, USA

    Patrick R. Taylor

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Peng, Y., Reddy, R.G. (2017). Corrosion Mechanism of Haynes 230 Alloy with Ni Crucible in MgCl2–KCl. In: Wang, S., Free, M., Alam, S., Zhang, M., Taylor, P. (eds) Applications of Process Engineering Principles in Materials Processing, Energy and Environmental Technologies. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-51091-0_37

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