Evaluation of Durable Metallic Supports for Catalytic Combustors, CRADA Final Report ORNL 00-0570

Technical Report · Wed Oct 01 00:00:00 EDT 2003

DOI:https://doi.org/10.2172/1135811· OSTI ID:1135811

Pint, B. A. ^[1]; Wright, I. G. ^[1]; Lara-Curzio, E. ^[1]; McCarty, J. ^[2]; Barnes, J. ^[2]

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1. ORNL
2. Catalytica Energy Systems, Inc.

In 2000, a Cooperative Research and Development Agreement (CRADA) was undertaken between the Oak Ridge National Laboratory (ORNL) and Catalytica Energy Systems Incorporated (CESI) to determine the properties of current metallic catalyst supports and examine new candidate alloys for this application. A team was established at ORNL to examine oxidation-limited lifetime of these thin-walled metallic components using standard lifetime models and to measure the mechanical properties of the foils (40-200:m in thickness) which can differ substantially from bulk properties. Oxidation experiments were conducted on foil specimens at 700/-1100/C in laboratory air and in air with 10 vol.% water vapor to better simulate the combustor environment. At the higher test temperatures, time to oxidation-induced (i.e. breakaway oxidation) failure was determined in 1h cycles in order to verify predictions from a standard reservoir-type oxidation lifetime model. Selected specimens were run for >10,000h in 100 or 500h cycles at lower test temperatures in order to determine the oxidation kinetics for the model. The creep properties of selected foils were measured for 4,000-8,000h at operation-relevant stresses and temperatures. None of the new candidate alloys significantly out-performed currently used alloys in laboratory testing, particularly in oxidation lifetime testing. Therefore, engine testing was not performed on any of the new candidate alloys. Both the oxidation- and creep-resistance of FeCrAl alloys was greater than expected and the results of the CRADA allowed CESI to extend life or increase operating temperatures for these lower cost substrate alloys in the next generation of catalyst modules.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE; the U.S. Department of Energy, Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Industrial Technology, as part of the Advanced Turbine Systems Program
• Contributing Organization: Catalytica Energy Systems, Inc.
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1135811
• Report Number(s): C/ORNL 00-0570
• Country of Publication: United States
• Language: English

Related Subjects

next generation of catalyst modules
future catalyst modules
candidate alloys for catalyst