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Indexed by:期刊论文

Date of Publication:2010-03-01

Journal:MATERIALS & DESIGN

Included Journals:SCIE、EI、Scopus

Volume:31

Issue:3

Page Number:1628-1632

ISSN No.:0261-3069

Abstract: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.