Solar Turbines Incorporated, under U.S. government sponsored programs, has been evaluating ceramic matrix composite combustor liners in test rigs and Solar’s Centaur® 50S gas turbine engines since 1992. The objective is to evaluate and improve the performance and durability of CMCs as high-temperature materials for advanced low emissions combustors. Field testing of CMC combustor liners started in May of 1997 and by the end of 2004, over 67,000 operating hours had been accumulated on and oxide∕oxide CMC liners. and CO emissions have been consistently and , respectively. Maximum test durations of and have been logged for liners with protective environmental barrier coatings. An oxide∕oxide CMC liner with a Friable Graded Insulation coating has been tested for . EBCs significantly improve CMC liner life. The basic three-layer EBC consists of consecutive layers of Si, mullite, and BSAS. The durability of the baseline EBC can be improved by mixing BSAS with mullite in the intermediate coating layer. The efficacy of replacing BSAS with SAS has not been demonstrated yet. Heavy degradation was observed for two-layer Si∕BSAS and Si∕SAS EBCs, indicating that the elimination of the intermediate layer is detrimental to EBC durability. Equivalent performance was observed when the Hi-Nicalon fiber reinforcement was replaced with Tyranno ZM or ZMI fiber. Melt infiltrated CMCs have improved durability compared to CMCs fabricated by Chemical Vapor Infiltration of the matrix, in the absence of an EBC. However, the presence of an EBC results in roughly equivalent service life for MI and CVI CMCs. Results to date indicate that oxide∕oxide CMCs with protective FGI show minor degradation under Centaur® 50S gas turbine engine operating conditions. The results of, and lessons learned from CMC combustor liner engine field testing, conducted through 2004, have been summarized.
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January 2007
Technical Papers
Ceramic Matrix Composite Combustor Liners: A Summary of Field Evaluations
Mark van Roode,
Mark van Roode
Solar Turbines Incorporated
, P. O. Box 85376, San Diego, CA 92186-5376
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Jeff Price,
Jeff Price
Solar Turbines Incorporated
, P. O. Box 85376, San Diego, CA 92186-5376
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Josh Kimmel,
Josh Kimmel
Solar Turbines Incorporated
, P. O. Box 85376, San Diego, CA 92186-5376
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Naren Miriyala,
Naren Miriyala
Solar Turbines Incorporated
, P. O. Box 85376, San Diego, CA 92186-5376
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Don Leroux,
Don Leroux
Solar Turbines Incorporated
, P. O. Box 85376, San Diego, CA 92186-5376
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Anthony Fahme,
Anthony Fahme
Solar Turbines Incorporated
, P. O. Box 85376, San Diego, CA 92186-5376
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Kenneth Smith
Kenneth Smith
Solar Turbines Incorporated
, P. O. Box 85376, San Diego, CA 92186-5376
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Mark van Roode
Solar Turbines Incorporated
, P. O. Box 85376, San Diego, CA 92186-5376
Jeff Price
Solar Turbines Incorporated
, P. O. Box 85376, San Diego, CA 92186-5376
Josh Kimmel
Solar Turbines Incorporated
, P. O. Box 85376, San Diego, CA 92186-5376
Naren Miriyala
Solar Turbines Incorporated
, P. O. Box 85376, San Diego, CA 92186-5376
Don Leroux
Solar Turbines Incorporated
, P. O. Box 85376, San Diego, CA 92186-5376
Anthony Fahme
Solar Turbines Incorporated
, P. O. Box 85376, San Diego, CA 92186-5376
Kenneth Smith
Solar Turbines Incorporated
, P. O. Box 85376, San Diego, CA 92186-5376J. Eng. Gas Turbines Power. Jan 2007, 129(1): 21-30 (10 pages)
Published Online: March 1, 2005
Article history
Received:
October 1, 2004
Revised:
March 1, 2005
Citation
van Roode, M., Price, J., Kimmel, J., Miriyala, N., Leroux, D., Fahme, A., and Smith, K. (March 1, 2005). "Ceramic Matrix Composite Combustor Liners: A Summary of Field Evaluations." ASME. J. Eng. Gas Turbines Power. January 2007; 129(1): 21–30. https://doi.org/10.1115/1.2181182
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