Advanced Science (Jul 2022)

Integrated High‐Throughput and Machine Learning Methods to Accelerate Discovery of Molten Salt Corrosion‐Resistant Alloys

  • Yafei Wang,
  • Bonita Goh,
  • Phalgun Nelaturu,
  • Thien Duong,
  • Najlaa Hassan,
  • Raphaelle David,
  • Michael Moorehead,
  • Santanu Chaudhuri,
  • Adam Creuziger,
  • Jason Hattrick‐Simpers,
  • Dan J. Thoma,
  • Kumar Sridharan,
  • Adrien Couet

DOI
https://doi.org/10.1002/advs.202200370
Journal volume & issue
Vol. 9, no. 20
pp. n/a – n/a

Abstract

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Abstract Insufficient availability of molten salt corrosion‐resistant alloys severely limits the fruition of a variety of promising molten salt technologies that could otherwise have significant societal impacts. To accelerate alloy development for molten salt applications and develop fundamental understanding of corrosion in these environments, here an integrated approach is presented using a set of high‐throughput (HTP) alloy synthesis, corrosion testing, and modeling coupled with automated characterization and machine learning. By using this approach, a broad range of CrFeMnNi alloys are evaluated for their corrosion resistances in molten salt simultaneously demonstrating that corrosion‐resistant alloy development can be accelerated by 2 to 3 orders of magnitude. Based on the obtained results, a sacrificial protection mechanism is unveiled in the corrosion of CrFeMnNi alloys in molten salts which can be applied to protect the less unstable elements in the alloy from being depleted, and provided new insights on the design of high‐temperature molten salt corrosion‐resistant alloys.

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