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Effect of SiC submicrometer particle size and content on fracture toughness of alumina-SiC nanocomposites

Journal Article · · Journal of the American Ceramic Society
; ;  [1];  [2]
  1. Technion, Haifa (Israel). Dept. of Materials Engineering
  2. Iscar, Tefen (Israel)

A simple model was developed which describes the effects of SiC submicrometer particles on the fracture toughness of alumina-SiC nanocomposites. This effect was attributed to the change in the fracture mode observed in alumina on adding SiC submicrometer particles, which was suggested to be a result of both matrix weakening and grain boundary strengthening. The model suggests that the increase in fracture toughness should be obtained only for small additions (less than 5 wt%) of SiC.

Sponsoring Organization:
USDOE
OSTI ID:
182672
Journal Information:
Journal of the American Ceramic Society, Journal Name: Journal of the American Ceramic Society Journal Issue: 1 Vol. 78; ISSN 0002-7820; ISSN JACTAW
Country of Publication:
United States
Language:
English