  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 we present an integrated approach
using a set of high-throughput 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 were evaluated for their
corrosion resistances in molten salt simultaneously demonstrating that
corrosion-resistant alloy development can be accelerated by thousands of times.
Based on the obtained results, we unveiled a sacrificial mechanism 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.
