Fracture Behavior of SiC-Whisker-Reinforced Barium Aluminosilicate Glass-Ceramic Matrix Composites

Autor:	Jue Ming Yang, Feng Ye, Wan Cheng Zhou, Ting Chuan Lei, Litong Zhang, Yu Zhou
Rok vydání:	2001
Předmět:	Materials science Fracture toughness Flexural strength Whisker Whiskers Materials Chemistry Ceramics and Composites Mullite Composite material Ceramic matrix composite Hot pressing Microstructure
Zdroj:	Journal of the American Ceramic Society. 84:881-883
ISSN:	1551-2916 0002-7820
DOI:	10.1111/j.1151-2916.2001.tb00759.x
Popis:	Barium aluminosilicate (BAS) glass-ceramic composites reinforced with various volume percents (0, 10, 20, 30, 40 vol%) of SiC whiskers were fabricated by hot pressing. The microstructure, the whisker/matrix interface structure, the phase constitution, and the mechanical properties of the composites were systematically studied by means of SEM, TEM, and XRD techniques as well as by indentation crack microfracture and single-edge-notched-beam bend testing. It was demonstrated that the incorporation of SiC whiskers could significantly increase the flexural strength and fracture toughness of BAS glass-ceramic matrices. The addition of active Al 2 O 3 to the BAS matrix reduced the amount of SiO 2 in the matrix, forming needlelike mullite, which further improved the mechanical properties.
Databáze:	OpenAIRE
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