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Characterization of SiCSiC Composites in Support of Environmental Degradation Modeling
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Author and Affiliation:
Kiser, Doug(NASA Glenn Research Center, Cleveland, OH United States);
Sullivan, Roy(NASA Glenn Research Center, Cleveland, OH United States);
Bhatt, Ram(Ohio Aerospace Inst., Cleveland, OH, United States);
Smith, Craig(Akron Univ., Akron, OH, United States);
Zima, John(Toledo Univ., OH, United States);
McCue, Terry(Science Applications International Corp., Cleveland, OH, United States)
Abstract: SiCSiC (silicon carbide fiber reinforced silicon carbide) composites are candidate materials for various turbine engine applications because of their high specific strength and good creep and oxidation resistance at elevated temperatures. This study was performed to characterize the microstructure of a melt infiltrated (MI) SiCSiC, and to examine environmental degradation mechanisms occurring in precracked MI SiCSiC CMC specimens under tensile stresses of 30 ksi or less at 815C in dry air or argon. In addition, the oxidation of the BN interface was characterized at815C, and crack opening displacement as a function of stress measurements were made. This material characterization is being performed to obtain data to support NASA GRC modeling of SiCSiC environmental degradation. The comparison of experimentally-observed phenomena with model predictions can lead to improved understanding of material degradation mechanisms.
Publication Date: Jan 25, 2016
Document ID:
20160010294
(Acquired Feb 16, 2017)
Subject Category: INORGANIC, ORGANIC AND PHYSICAL CHEMISTRY
Report/Patent Number: GRC-E-DAA-TN29417
Document Type: Oral/Visual Presentation
Meeting Information: Annual Conference on Composites, Materials, and Structures; 40th; 25-29 Jan. 2016; Cocoa Beach, FL; United States
Meeting Sponsor: United States Advanced Ceramics Association; Washington, DC, United States
Contract/Grant/Task Num: NNC13BA10B; NNC12BA01B; WBS 109492.02.03.01.30.01
Financial Sponsor: NASA Glenn Research Center; Cleveland, OH United States
Organization Source: NASA Glenn Research Center; Cleveland, OH United States
Description: 37p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright; Distribution as joint owner in the copyright
NASA Terms: SILICON CARBIDES; DEGRADATION; OXIDATION; CREEP STRENGTH; HIGH STRENGTH; MICROSTRUCTURE; TENSILE STRESS; MECHANICAL PROPERTIES; ENVIRONMENT MODELS; OXIDATION RESISTANCE; CHARACTERIZATION; CRACK OPENING DISPLACEMENT
Other Descriptors: SIC/SIC COMPOSITES; TURBINE ENGINE; MATERIAL DEGRADATION
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Last Modified: February 16, 2017
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