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The effect of fiber coating thickness on the interfacial properties of a continuous fiber ceramic matrix composite [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 1994.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
15 pages : digital, PDF file
Additional Creators
Oak Ridge National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The interfacial properties (coefficient of friction, residual clamping stress, residual axial stress, and debond stress) of a continuous fiber ceramic composite were determined by means of single-fiber push-out tests. The composite consisted of Nicalon{trademark} fibers, that had been coated prior to matrix infiltration with carbon layers ranging in thickness from 0.03 to 1.2 μm, and a SiC matrix. It was found that the effective interfacial frictional stress decreased as the thickness of the carbon layer increased, from 24.6 ± 9.9 MPa for a thickness of 0.03 Jim to 5.8 ± 1.4 MPa for a thickness of 1.25 μm. It was also found that both the coefficient of friction and the residual clamping stress decreased as the thickness of the carbon layer increased. These results are explained in terms of the state of residual stresses in this composite and the role of the fiber surface topography during fiber sliding.
Report Numbers
E 1.99:conf-940135--7
conf-940135--7
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
09/01/1994.
"conf-940135--7"
"DE94017886"
18. annual conference on composites and advanced ceramics,Cocoa Beach, FL (United States),9-14 Jan 1994.
Lowden, R.A.; Ferber, M.K.; Lara-Curzio, E.
Funding Information
AC05-84OR21400
View MARC record | catkey: 14453962