Evaluation of a surface treatment on the performance of Crofer 22 APU in a SOFC Button Cell

Conference · Thu Feb 01 00:00:00 EST 2007

OSTI ID:912942

Alman, D E; Johnson, C D; Jablonski, P D

Crofer 22 APU is a 22 weight percent Cr ferritic stainless steel developed at Forschugszentrum Jülich and manufactured by ThysennKrupp for application as an interconnect in SOFC. We have developed a cerium oxide surface treatment which greatly enhances the oxidation resistance of this and many other alloys. Minimizing scale growth is helpful for improving the performance in interconnect application; however, the overall performance is dependant upon such things as scale thickness, scale resistivity, etc. We report on the in-cell performance of cerium treated and conventional Crofer 22 APU and discuss the results in terms of the microstructure and scales that form.

• Research Organization: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
• Sponsoring Organization: USDOE - Office of Fossil Energy (FE)
• DOE Contract Number: None cited
• OSTI ID: 912942
• Report Number(s): DOE/NETL-IR-2007-076; TRN: US200802%%473
• Resource Relation: Conference: 2007 TMS Annual Meeting: Symposium on Materials in Clean Energy Systems II, Orlando, FL, Feb. 25-Mar. 1, 2007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALLOYS
CERIUM
CERIUM OXIDES
ENERGY SYSTEMS
EVALUATION
MICROSTRUCTURE
OXIDATION
PERFORMANCE
SOLID OXIDE FUEL CELLS
STAINLESS STEELS
SURFACE TREATMENTS
THICKNESS
ferritic stainless steel
interconnect
SOFC
solid oxide fuel cell
cerium oxide
surface treatment
oxidation resistance
Crofer 22 APU