A first look at erosion of continuous-fiber reinforced ceramic-matrix composites

Conference · Sun Dec 01 04:00:00 EST 1991

OSTI ID:10117940

Karasek, K R; Gonczy, S T ^[1]; Kupperman, J B; Zamirowski, E J; Goretta, K C; Routbort, J L ^[2]

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1. Allied-Signal, Inc., Des Plaines, IL (United States)
2. Argonne National Lab., IL (United States)

We report the initial results of a study of solid-particle erosion of Nicalon{trademark} Sic reinforced carbon-modified-silica-glass composites. SiC abrasives with diameters between 42 to 390{mu}m were used with impact angles of 30{degrees} and 90{degrees}, and velocities ranged 30 to 80 m/s. Fibers were parallel to the surface in all cases. Woven-fiber composites exhibited the same erosive behavior as uniaxial composites. Interfacial chemistry was controlled, and the comparison between composites which exhibit low-strength-brittle and high-strength-fibrous fractures under flexure conditions showed no significant difference in erosion resistance. This result and SEM data indicate that most of the fracture occurs within the matrix and/or at the fiber-matrix interface. We have found in previous work that polymer-matrix composites (with fibers parallel to the surface) are more susceptible to erosion damage than the matrix polymer. This also appears to be the case for the ceramic composites.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 10117940
• Report Number(s): ANL/CP--74004; CONF-920144--2; ON: DE92006975
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360205
360603
360604
COMPOSITE MATERIALS
CORROSION AND EROSION
CORROSION, EROSION, AND DEGRADATION
EROSION
FIBERS
MECHANICAL PROPERTIES
PARTICLE SIZE
REINFORCED MATERIALS
SCANNING ELECTRON MICROSCOPY
SILICA
SILICON CARBIDES