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论文类型： 期刊论文

发表时间： 2009-03-25

发表刊物： MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

收录刊物： SCIE、EI

卷号： 504

期号： 1-2

页面范围： 49-54

ISSN号： 0921-5093

关键字： Alumina; SiC; Composite; Fracture toughness

摘要： 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.