| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Cold Spray Additive Manufacturing: Part Quality and Performance
|
| Presentation Title |
F-50: Corrosion Behavior Characterization for Cold Sprayed Scalmalloy Coatings |
| Author(s) |
Craig J. Neal, Anil Lama, Elayaraja Kolanthai, Yifei Fu, Arvind Agarwal, Sudipta Seal |
| On-Site Speaker (Planned) |
Craig J. Neal |
| Abstract Scope |
High-strength aluminum alloys are often implemented as structural materials and subjected to corrosive environments. Sc/Zr-modified aluminum alloys offer excellent mechanical properties, while additionally being resistant to corrosion processes. In the presented study, Scalmalloy (Al-Mg4.6-Sc0.72-Zr0.3-Mn0.5 wt.%) coatings were fabricated using a cold spray deposition methodology and their corrosion behaviors were analyzed. Coatings onto Al6061-T6 substrates were 5 mm in thickness; produced using nitrogen and helium as the carrier gas in a high-pressure cold spray system. Corrosion characters of the coatings were examined in NaCl electrolyte solutions using open circuit potentiometry, potentiodynamic polarization, and electrochemical impedance spectroscopy (10 mHz to 1 MHz; 10 mV sinus amplitude perturbation). Primary corrosion processes were identified through fitting of impedance data to equivalent circuit diagrams, Tafel analysis, and ex situ materials characterization studies (x-ray photoelectron spectroscopy, chemical mapping; SEM). |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Surface Modification and Coatings, Other |