We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Alternating-Current Electrophoretic Deposition of Spinel Coatings on Porous Metallic Substrates for Solid Oxide Fuel Cell Applications.
- Authors
Zhu, Zhikuan; Pal, Uday; Gopalan, Srikanth; Hussain, A. Mohammed; Dong, Song; Dale, Nilesh; Fukuyama, Yosuke; Basu, Soumendra
- Abstract
The performance of solid oxide fuel cells (SOFCs) can be degraded by "chromium poisoning" where thermally grown Cr2O3 on metallic surfaces forms volatile Cr-containing species that are redeposited on active regions of the cathode. This phenomenon is further exacerbated for porous metallic interconnects and metal-supported electrodes due to their large surface-to-volume ratios. In this study, electrophoretic deposition (EPD) of CuNi0.2Mn1.8O4 spinel powders on porous SUS430 metallic substrates using alternating current (AC) was explored. Two-step densification heat treatment was used to form a thin, uniform, protective spinel coating. The area-specific resistance (ASR) and weight gain were tracked during 100-h oxidation tests at 700°C in air. The results showed that, despite the considerable complexity of the sample shape, AC EPD was able to form a protective coating layer that significantly limited the growth rate of the thermally grown oxide (TGO) by reducing the kg value by a factor of 25.
- Subjects
ELECTROPHORETIC deposition; SOLID oxide fuel cells; METAL coating; SPINEL; PROTECTIVE coatings; METALLIC surfaces; ALTERNATING currents
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2021, Vol 73, Issue 9, p2764
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-021-04763-2