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Experimentally determined wear behavior of an Al2O3-SiC composite from 25 to 1200 CThe sliding wear behavior of a self-mated alumina-silicon carbide whisker toughened composite was studied using optical, scanning electron (SEM) and transmission electron (TEM) microscopy. Because of its excellent strength and toughness properties this composite material is under consideration for use in heat engine applications for sliding contacts which operate at elevated temperatures. The composite's wear behavior and especially its wear mechanisms are not well understood. Pin-on-disk specimens were slid in air at 2.7 m/s sliding velocity, under a 26.5-N load, at temperatures 25 to 1200 C. Pin wear increased with increasing temperature. Based upon the microscopic analyses, the wear mechanism seems to be loosening of the reinforcing whiskers due to frictional and bulk heating. This leads to whisker pullout and increased wear.
Document ID
19900010814
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Dellacorte, Christopher (NASA Lewis Research Center Cleveland, OH., United States)
Farmer, Serene C. (NASA Lewis Research Center Cleveland, OH., United States)
Book, Patricia O. (Cleveland State Univ. OH., United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1990
Subject Category
Chemistry And Materials (General)
Report/Patent Number
NAS 1.15:102549
NASA-TM-102549
E-5361
Meeting Information
Meeting: Tribology of Composite Materials
Location: Oak Ridge, TN
Country: United States
Start Date: May 1, 1990
End Date: May 3, 1990
Sponsors: ASM International
Accession Number
90N20130
Funding Number(s)
PROJECT: RTOP 505-63-1A
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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