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Evaluation of electrodeposited Mn-Co protective coatings on Crofer 22 APU steel
- Source :
- International Journal of Applied Ceramic Technology. 15:349-360
- Publication Year :
- 2017
- Publisher :
- Wiley, 2017.
-
Abstract
- Interconnects used in Solid Oxide Cells stacks require protective coatings to lower their parabolic rate constant and block chromium evaporation (on the air side). In this work four different protective coatings on steel are evaluated for their high temperature corrosion resistance and electrical conductivity. A commercial electroplating process was used for the preparation of coatings with different Mn/Co ratios on Crofer 22 APU steel. Oxidation of samples was performed in air at 800°C for 1000 hours. Postmortem analysis of the coated samples was performed by scanning electron microscopy and x-ray diffractomettry. Based on the results, influence of the Co/Mn ratio on the resulting corrosion properties are discussed. Parabolic rate constant of the coated samples is the lowest for the MnCo sample, whereas electrical resistance is the lowest for the Co sample, which has a corrosion rate similar to the not-coated alloys.
- Subjects :
- Marketing
Materials science
Scanning electron microscope
High-temperature corrosion
Metallurgy
Oxide
chemistry.chemical_element
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
Microstructure
01 natural sciences
0104 chemical sciences
Corrosion
chemistry.chemical_compound
Chromium
Electrical resistance and conductance
chemistry
Materials Chemistry
Ceramics and Composites
0210 nano-technology
Electroplating
Subjects
Details
- ISSN :
- 1546542X
- Volume :
- 15
- Database :
- OpenAIRE
- Journal :
- International Journal of Applied Ceramic Technology
- Accession number :
- edsair.doi...........1db25e6391e33466e11e82702654fc48