About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Materials for Energy Conversion and Storage VI
|
Presentation Title |
Oxidation of Nickel Coated AISI 430 Alloy for High Temperature Electrochemical Systems |
Author(s) |
Manoj K. Mahapatra, Mark K King |
On-Site Speaker (Planned) |
Manoj K. Mahapatra |
Abstract Scope |
Electrically conductive coatings are used to prevent oxidation resistance and chromium evaporation of metallic interconnects for high temperature electrochemical systems. We have studied the oxidation behavior of nickel coated AISI 430 alloy, as a model system, in humidified air and hydrogen as well. Thermogravinetric analysis and post-test structural and microstructural analyses reveal the oxidation kinetics and the mechanisms of oxide layers formation. Our work has two important findings. First, processing methods of nickel deposition influence the oxidation behavior. Electrodeposited nickel coating shows higher oxidation resistance than electroless method. Second, pretreatment of nickel coating in reducing environment significantly improves the oxidation resistance due to formation of intermetallic compounds. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |