Abstract
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.
| Original language | English |
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| Title of host publication | Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education |
| Publisher | American Society of Mechanical Engineers (ASME) |
| ISBN (Electronic) | 9780791878576, 9780791878576 |
| DOIs | |
| State | Published - 2000 |
| Event | ASME Turbo Expo 2000: Power for Land, Sea, and Air, GT 2000 - Munich, Germany Duration: May 8 2000 → May 11 2000 |
Publication series
| Name | Proceedings of the ASME Turbo Expo |
|---|---|
| Volume | 4 |
Conference
| Conference | ASME Turbo Expo 2000: Power for Land, Sea, and Air, GT 2000 |
|---|---|
| Country/Territory | Germany |
| City | Munich |
| Period | 05/8/00 → 05/11/00 |
Funding
The authors would like to thank Mr. R.F. Dacek for his help in the preparation of specimens. The research activities carried out at ORNL were sponsored by the U.S. Department of Energy, Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Industrial Technologies, Industrial Energy Efficiency Division and Continuous Fiber Ceramic Composites Program, under contract DE-AC05-96OR22464 with Lockheed Martin Energy Research Corporation.