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Durability and CMAS Resistance of Advanced Environmental Barrier Coatings Systems for SiC/SiC Ceramic Matrix CompositesEnvironmental barrier coatings (EBCs) and SiCSiC ceramic matrix composites (CMCs) systems will play a crucial role in next generation turbine engines for hot-section component applications because of their ability to significantly increase engine operating temperatures with improved efficiency, reduce engine weight and cooling requirements. This paper will emphasize advanced environmental barrier coating developments for SiCSiC turbine airfoil components, by using advanced coating compositions and processing, in conjunction with mechanical and environment testing and durability validations. The coating-CMC degradations and durability in the laboratory simulated engine fatigue-creep and complex operating environments are being addressed. The effects of Calcium-Magnesium-Alumino-Silicate (CMAS) from road sand or volcano-ash deposits on the degradation mechanisms of the environmental barrier coating systems will be discussed. The results help understand the advanced EBC-CMC system performance, aiming at the durability improvements of more robust, prime-reliant environmental barrier coatings for successful applications of the component technologies and lifing methodologies.
Document ID
20150004095
Acquisition Source
Glenn Research Center
Document Type
Presentation
Authors
Zhu, Dongming
(NASA Glenn Research Center Cleveland, OH United States)
Date Acquired
April 2, 2015
Publication Date
January 25, 2015
Subject Category
Composite Materials
Report/Patent Number
GRC-E-DAA-TN20622
Meeting Information
Meeting: International Conference and Expo on Advanced Ceramics and Composites
Location: Daytona Beach, Florida
Country: United States
Start Date: January 25, 2015
End Date: January 30, 2015
Sponsors: American Ceramic Society
Funding Number(s)
WBS: WBS 109492.02.03.02.02.02
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Keywords
Ceramic Matrix Composites
Ceramic Matrix Composites
Fatigue and Environment Durability
Environmental Barrier Coatings
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