University of Virginia - Department of Materials Science and Engineering
Abstract
Multi-principal element alloys have the potential to show excellent passivation behavior. However, the detailed compositional and crystal structure design of these alloys requires a high-throughput strategy. We used combinatorial thin-film libraries of single-phase (FeCoNi)1-x-yCrxAly alloys and compared their passivation behaviors to corresponding bulk alloys. Our results demonstrate that the detailed passivation behaviors of thin-films and bulk alloys are different which is related to both nanoscale porosity within the thin-films and grain boundary dissolution. Nevertheless, we found that comparisons made among suitably designed sets of thin-film alloys can be used to determine the best corrosion performing bulk alloy composition.
Sieradzki, Karl and Blades, William H. and Sur, Debashish and Joress, Howard and DeCost, Brian and Holcombe, Emily F. and Redemann, Ben and McQueen, Tyrel and Berlia, Rohit and Rajagopalan, Jagannathan and Taheri, M. L. and Scully, John R., Re: Submission of “High-Throughput Aqueous Passivation Behavior of Thin-Film Versus Bulk Multi-Principal Element Alloys in Sulfuric Acid”. Available at SSRN: https://ssrn.com/abstract=4853133 or http://dx.doi.org/10.2139/ssrn.4853133
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