About this Abstract |
Meeting |
MS&T21: Materials Science & Technology
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Symposium
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High Entropy Materials: Concentrated Solid Solutions, Intermetallics, Ceramics, Functional Materials and Beyond II
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Presentation Title |
Understanding the Nature of Passivation Film of a TRIP Fe39Mn20Co20Cr15Si5Al1 (at.%) High Entropy Alloy in 3.5 wt.% NaCl Solution |
Author(s) |
Pranshul Varshney, Nilesh Kumar |
On-Site Speaker (Planned) |
Pranshul Varshney |
Abstract Scope |
The nature of passive films affects the corrosion properties of alloys. The corrosion susceptibility of an alloy may undermine the structural integrity of any engineering component. The advanced materials such as high entropy alloys (HEAs) are being explored for a wide range of applications that requires property evaluation under different environments including corrosive atmosphere. The present study unveils the passivation film behavior of a transformation-induced-plasticity (TRIP) Fe39Mn20Co20Cr15Si5Al1 (at.%) HEA in 3.5 wt.% NaCl solution at room temperature. The passivation film characterization has been conducted using advanced analytical tools including electrochemical impedance spectroscopy and X-ray photoelectron spectroscopy before and after the corrosion test. The preliminary results show excellent passivation film characteristics towards uniform corrosion but susceptibility towards pitting corrosion. The passivation film parameters showed dependence on anodic potential. Further analysis of the passivation film including identification of corrosion product(s) and oxides is underway that will be discussed during presentation. |