Dual Atmosphere Exposure Apparatus at Montana State University High Temperature Corrosion Laboratory Dr. P.E. Gannon
The dual atmosphere rig is a custom test apparatus which allows simultaneous specimen exposures to single (air/air) and dual atmospheres (air/fuel).
bubblers programmable unit Tubular furnace flowmeters H2 generator
Programmable (ramp, dwell and number of cycles) tubular furnace Possibility to work at temperatureup up to 1200°C Controlled gas moisturizing by flowmeters and bubblers Possibility to perform tests using pure H2 by the H2O electrolyzer connected to the system
Technical drawings Sample holder tops
Sample holder Circular samples 25 mm diameter and thickness between 0.2 and 0.8 mm gas sealing by mica o-rings (23.5 x 18 x 1 mm) stainless Steel sample mica ring
Final assembly sample mica ring top 1 top 2 Mechanical sealing by the customized tops and screws/nuts Helium leak testing before sample holder insertion in the tubular furnace
Running test
Oxidation behavior of coated and uncoated ferritic steel (1/2) An example: Oxidation behavior of coated and uncoated ferritic steel (1/2) Sample: uncoated Crofer 22 APU Parameters: 200 hours 800°C 3% moist gases
Oxidation behavior of coated and uncoated ferritic steel (2/2) An example: Oxidation behavior of coated and uncoated ferritic steel (2/2) Sample: Co/Mn coated Crofer 22 APU Parameters: 200 hours 800°C 3% moist gases
Published papers R. Amendola, P. Gannon, B. Ellingwood, K. Hoyt, P.Piccardo, P. Genocchio, “Oxidation behavior of coated and pre-oxidized ferritic steel in single and dual atmosphere exposures at 800 °C” Surface and coatings technology, In press October 2011 K. Hoyt, P. Gannon, P. White, R. Tortop, “Oxidation behavior of (CoMn)3O4 Coatings on Preoxidized 441HP Stainless Steel” International Journal of Hydrogen Energy, In press October 2011 C. Macauley, P. Gannon, M. Deibert, P. White, “The influence of pre-treatment on the oxidation behavior of Co coated SOFC interconnects”, International Journal of Hydrogen Energy, Volume 36, Issue 7, April 2011, Pages 4540-4548