The fracture behavior of a SiC(w)/alumina composite was studied between room temperature and 1320 C in vacuum by four-point bend testing of specimens pre-cracked by bridge indentation. The results are compared to those of earlier work on a similar material in air. In vacuum, the composite begins to exhibit stable crack growth (SCG) and increasing apparent toughness at about 1100 C. Between 1100 and 1320 C, the extent of SCG ...
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