Erosion behavior of a large number of gas-turbine grade ceramic matrix composites (CMCs) was assessed using fine to medium grain garnet erodents at velocities of 200 and 300 m/s at ambient temperature. The CMCs used in the current work were comprised of nine different SiC/SiCs, one SiC/C, one C/SiC, one SiC/MAS, and one oxide/oxide. Erosion damage was quantified with respect to erosion rate and the damage morphology was assessed via scanning electron microscopy (SEM) and optical microscopy in conjunction with three-dimensional (3D) image mapping. The CMCs response to erosion appeared to be very complicated due to their architectural complexity, multiple material constituents, and presence of pores. Effects of architecture, material constituents, density, matrix hardness, and elastic modulus of the CMCs were taken into account and correlated to overall erosion behavior. The erosion of monolithic ceramics such as silicon carbide and silicon nitrides was also examined to gain a better understanding of the governing damage mechanisms for the CMC material systems used in this work.
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January 2019
Research-Article
Erosion in Gas-Turbine Grade Ceramic Matrix Composites
N. Kedir,
N. Kedir
Naval Air Systems Command,
Patuxent River, MD 20670
Patuxent River, MD 20670
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C. Gong,
C. Gong
Naval Air Systems Command,
Patuxent River, MD 20670
Patuxent River, MD 20670
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L. Sanchez,
L. Sanchez
Naval Air Systems Command,
Patuxent River, MD 20670
Patuxent River, MD 20670
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M. J. Presby,
M. J. Presby
Naval Air Systems Command,
Patuxent River, MD 20670
Patuxent River, MD 20670
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S. Kane,
S. Kane
Naval Air Systems Command,
Patuxent River, MD 20670
Patuxent River, MD 20670
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D. C. Faucett,
D. C. Faucett
Naval Air Systems Command,
Patuxent River, MD 20670
Patuxent River, MD 20670
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S. R. Choi
S. R. Choi
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N. Kedir
Naval Air Systems Command,
Patuxent River, MD 20670
Patuxent River, MD 20670
C. Gong
Naval Air Systems Command,
Patuxent River, MD 20670
Patuxent River, MD 20670
L. Sanchez
Naval Air Systems Command,
Patuxent River, MD 20670
Patuxent River, MD 20670
M. J. Presby
Naval Air Systems Command,
Patuxent River, MD 20670
Patuxent River, MD 20670
S. Kane
Naval Air Systems Command,
Patuxent River, MD 20670
Patuxent River, MD 20670
D. C. Faucett
Naval Air Systems Command,
Patuxent River, MD 20670
Patuxent River, MD 20670
S. R. Choi
1Present address: School of Materials Engineering, Purdue University, West Lafayette, IN 47907.
2Present address: Mechanical Engineering Department, The University of Akron, Akron, OH 44325.
3Corresponding author.
Manuscript received June 26, 2018; final manuscript received July 3, 2018; published online September 17, 2018. Editor: Jerzy T. Sawicki. This material is declared a work of the U.S. Government and is not subject to copyright protection in the United States. Approved for public release; distribution is unlimited.
J. Eng. Gas Turbines Power. Jan 2019, 141(1): 011019 (9 pages)
Published Online: September 17, 2018
Article history
Received:
June 26, 2018
Revised:
July 3, 2018
Citation
Kedir, N., Gong, C., Sanchez, L., Presby, M. J., Kane, S., Faucett, D. C., and Choi, S. R. (September 17, 2018). "Erosion in Gas-Turbine Grade Ceramic Matrix Composites." ASME. J. Eng. Gas Turbines Power. January 2019; 141(1): 011019. https://doi.org/10.1115/1.4040848
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