Various issues associated with the design and mechanical evaluation of joints of ceramic matrix composites are discussed. The specific case of an affordable, robust ceramic joining technology (ARCJoinT) to join silicon carbide (CG-Nicalon™) fiber-reinforced-chemically vapor infiltrated (CVI) silicon carbide matrix composites is addressed. Experimental results are presented for the time and temperature dependence of the shear strength of these joints in air up to 1200°C. From compression testing of double-notched joint specimens with a notch separation of 4 mm, it was found that the apparent shear strength of the joints decreased from 92 MPa at room temperature to 71 MPa at 1200°C. From shear stress-rupture testing in air at 1200°C it was found that the shear strength of the joints decreased rapidly with time from an initial shear strength of 71 MPa to 17.5 MPa after 14.3 hours. The implications of these results in relation to the expected long-term service life of these joints in applications at elevated temperatures are discussed.
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ASME Turbo Expo 2000: Power for Land, Sea, and Air
May 8–11, 2000
Munich, Germany
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-7857-6
PROCEEDINGS PAPER
Design, Fabrication, and Testing of Ceramic Joints for High Temperature SiC/SiC Composites
M. Singh,
M. Singh
Dynacs Engineering Co., NASA Glenn Research Center, Cleveland, OH
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Edgar Lara-Curzio
Edgar Lara-Curzio
Oak Ridge National Laboratory, Oak Ridge, TN
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M. Singh
Dynacs Engineering Co., NASA Glenn Research Center, Cleveland, OH
Edgar Lara-Curzio
Oak Ridge National Laboratory, Oak Ridge, TN
Paper No:
2000-GT-0069, V004T02A008; 6 pages
Published Online:
August 4, 2014
Citation
Singh, M, & Lara-Curzio, E. "Design, Fabrication, and Testing of Ceramic Joints for High Temperature SiC/SiC Composites." Proceedings of the ASME Turbo Expo 2000: Power for Land, Sea, and Air. Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education. Munich, Germany. May 8–11, 2000. V004T02A008. ASME. https://doi.org/10.1115/2000-GT-0069
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