Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 504, Issue 1-2, Pages 49-54Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2008.10.021
Keywords
Alumina; SiC; Composite; Fracture toughness
Categories
Funding
- China National Natural Science Foundation [50871025]
- Liaoning Province
- Natural Science Foundation, China [20051075]
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The processing and mechanical behavior of Al2O3 composites with 1-20 wt.% nano-/micro-sized SiC particles was investigated. The composites were densified by hot-pressing. The mechanical properties of nano-/micro-sized SiC/Al2O3 composites including hardness, fracture toughness and flexural strength were investigated. It was found that the fracture strength and fracture toughness of the nano-/micro-sized SiC/Al2O3 composites were significantly improved in comparison with the monolithic Al2O3.7.6 MPa m(1/2) was the highest fracture toughness and was found in the composite with 5% SiC, while the 20% Sic composite exhibited the highest flexural strength. The toughening and strengthening mechanisms of the ceramic composites were discussed. (C) 2008 Elsevier B.V. All rights reserved.
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