Microstructure and mechanical properties of SiCw/BAS glass-ceramic composites

Feng Ye; Yu Zhou; Ting Quan Lei; Jue Ming Yang; Li Tong Zhang

Microstructure and mechanical properties of SiC_w/BAS glass-ceramic composites

Feng Ye, Yu Zhou, Ting Quan Lei, Jue Ming Yang, Li Tong Zhang

School of Materials Sience and Engineering

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

The BAS glass-ceramic composites reinforced with different volume fractions of SiC whiskers were successfully studied by a hot-pressing method. The results show that the BAS matrix is composed of BaAl₂Si₂O₈ and mullite. The incorporation of SiC whiskers can significantly increase the flexural strength and fracture toughness of BAS glass-ceramics. The flexural strength and fracture strength of 30vol%SiC_w/BAS composites can increase 128% and 190% compared to the unreinforced BAS matrix. The main toughening mechanisms are crack deflection, whisker pullout and bridging. The results of TEM observations show that SiC whiskers are directly bonded to the BAS matrix grains with no interfacial glass layer or reaction layer. In addition, the BAS composites also have good elevated temperature mechanical properties.

Original language	English
Pages (from-to)	519-520
Number of pages	2
Journal	Wuji Cailiao Xuebao/Journal of Inorganic Materials
Volume	15
Issue number	3
State	Published - 2000

Keywords

BAS glass-ceramic
Mechanical properties
Microstructure
SiC whisker

Cite this

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title = "Microstructure and mechanical properties of SiCw/BAS glass-ceramic composites",

abstract = "The BAS glass-ceramic composites reinforced with different volume fractions of SiC whiskers were successfully studied by a hot-pressing method. The results show that the BAS matrix is composed of BaAl2Si2O8 and mullite. The incorporation of SiC whiskers can significantly increase the flexural strength and fracture toughness of BAS glass-ceramics. The flexural strength and fracture strength of 30vol%SiCw/BAS composites can increase 128% and 190% compared to the unreinforced BAS matrix. The main toughening mechanisms are crack deflection, whisker pullout and bridging. The results of TEM observations show that SiC whiskers are directly bonded to the BAS matrix grains with no interfacial glass layer or reaction layer. In addition, the BAS composites also have good elevated temperature mechanical properties.",

keywords = "BAS glass-ceramic, Mechanical properties, Microstructure, SiC whisker",

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T1 - Microstructure and mechanical properties of SiCw/BAS glass-ceramic composites

AU - Ye, Feng

AU - Zhou, Yu

AU - Lei, Ting Quan

AU - Yang, Jue Ming

AU - Zhang, Li Tong

PY - 2000

Y1 - 2000

N2 - The BAS glass-ceramic composites reinforced with different volume fractions of SiC whiskers were successfully studied by a hot-pressing method. The results show that the BAS matrix is composed of BaAl2Si2O8 and mullite. The incorporation of SiC whiskers can significantly increase the flexural strength and fracture toughness of BAS glass-ceramics. The flexural strength and fracture strength of 30vol%SiCw/BAS composites can increase 128% and 190% compared to the unreinforced BAS matrix. The main toughening mechanisms are crack deflection, whisker pullout and bridging. The results of TEM observations show that SiC whiskers are directly bonded to the BAS matrix grains with no interfacial glass layer or reaction layer. In addition, the BAS composites also have good elevated temperature mechanical properties.

AB - The BAS glass-ceramic composites reinforced with different volume fractions of SiC whiskers were successfully studied by a hot-pressing method. The results show that the BAS matrix is composed of BaAl2Si2O8 and mullite. The incorporation of SiC whiskers can significantly increase the flexural strength and fracture toughness of BAS glass-ceramics. The flexural strength and fracture strength of 30vol%SiCw/BAS composites can increase 128% and 190% compared to the unreinforced BAS matrix. The main toughening mechanisms are crack deflection, whisker pullout and bridging. The results of TEM observations show that SiC whiskers are directly bonded to the BAS matrix grains with no interfacial glass layer or reaction layer. In addition, the BAS composites also have good elevated temperature mechanical properties.

KW - BAS glass-ceramic

KW - Mechanical properties

KW - Microstructure

KW - SiC whisker

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Microstructure and mechanical properties of SiC_w/BAS glass-ceramic composites

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