Effect of fiber coating thickness on the interfacial properties of a continuous fiber ceramic matrix composite

Edgar Lara-Curzio; Mattison K. Ferber; Richard A. Lowden

Effect of fiber coating thickness on the interfacial properties of a continuous fiber ceramic matrix composite

Edgar Lara-Curzio, Mattison K. Ferber, Richard A. Lowden

Energy Science and Technology Directorat

Research output: Contribution to journal › Conference article › peer-review

50 Scopus citations

Abstract

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^TM fibers, that had been coated prior to matrix infiltration with carbon layers ranging in thickness from 0.03 to 1.2 μm, and a CVI 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 μm to 3.8±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.

Original language	English
Pages (from-to)	989-1000
Number of pages	12
Journal	Ceramic Engineering and Science Proceedings
Volume	15
Issue number	5
State	Published - Sep 1994
Event	Proceedings of the 18th Annual Conference on Composites and Advanced Ceramic Materials - B. Part 2 (of 2) - Cocoa Beach, FL, USA Duration: Jan 9 1993 → Jan 14 1993

Cite this

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title = "Effect of fiber coating thickness on the interfacial properties of a continuous fiber ceramic matrix composite",

abstract = "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 NicalonTM fibers, that had been coated prior to matrix infiltration with carbon layers ranging in thickness from 0.03 to 1.2 μm, and a CVI 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 μm to 3.8±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.",

author = "Edgar Lara-Curzio and Ferber, {Mattison K.} and Lowden, {Richard A.}",

year = "1994",

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note = "Proceedings of the 18th Annual Conference on Composites and Advanced Ceramic Materials - B. Part 2 (of 2) ; Conference date: 09-01-1993 Through 14-01-1993",

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TY - JOUR

T1 - Effect of fiber coating thickness on the interfacial properties of a continuous fiber ceramic matrix composite

AU - Lara-Curzio, Edgar

AU - Ferber, Mattison K.

AU - Lowden, Richard A.

PY - 1994/9

Y1 - 1994/9

N2 - 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 NicalonTM fibers, that had been coated prior to matrix infiltration with carbon layers ranging in thickness from 0.03 to 1.2 μm, and a CVI 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 μm to 3.8±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.

AB - 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 NicalonTM fibers, that had been coated prior to matrix infiltration with carbon layers ranging in thickness from 0.03 to 1.2 μm, and a CVI 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 μm to 3.8±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.

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M3 - Conference article

AN - SCOPUS:0028515822

SN - 0196-6219

VL - 15

SP - 989

EP - 1000

JO - Ceramic Engineering and Science Proceedings

JF - Ceramic Engineering and Science Proceedings

IS - 5

T2 - Proceedings of the 18th Annual Conference on Composites and Advanced Ceramic Materials - B. Part 2 (of 2)

Y2 - 9 January 1993 through 14 January 1993

ER -

Effect of fiber coating thickness on the interfacial properties of a continuous fiber ceramic matrix composite

Abstract

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