Journal
SCRIPTA MATERIALIA
Volume 59, Issue 11, Pages 1222-1225Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2008.08.013
Keywords
ZrB2-SiC; Crack-healing; Strength; Oxidation
Categories
Funding
- NSFC [50602010]
- Research Fund for the Doctoral Program of Higher Education [20060213031]
- National Defence Foundation [9140A12030106HT01]
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The crack-healing behavior of zirconium diboride ceramic composite reinforced with silicon carbide whiskers has been investigated through pre-cracking, crack-healing and flexural strength testing processes. A Vickers indentation (similar to 70 mu m in size) was introduced and the crack was healed under different conditions. Cracks could heal completely in air, but did not heal in a vacuum. This composite has good self crack-healing ability at temperatures ranging from 800 to 1200 degrees C, with 1000 degrees C being the optimum healing temperature. (c) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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