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论文类型： 期刊论文

发表时间： 2010-03-01

发表刊物： MATERIALS & DESIGN

收录刊物： SCIE、EI、Scopus

卷号： 31

期号： 3

页面范围： 1628-1632

ISSN号： 0261-3069

摘要： The processing and mechanical behavior of Al2O3-xSiC (-C) (x = 1, 2, 5. 10 wt.%, ASx and ASCx) composites prepared by in situ reaction synthesis Sic from polycarbosilane (PCS) were investigated. The composites were densified by hot pressing. The pyrolysis process of PCS, microstructure, phase structure and mechanical properties of sintered composites were analyzed. Fully dense structure was obtained, and it was found that the fracture toughness and strength were highly improved compared with monolithic Al2O3. The fracture toughness reached 5.1 MPa m(1/2) in 1 wt.%SiC composite ASC1. AS1 showed 516 MPa of flexural strength. (C) 2009 Elsevier Ltd. All rights reserved.