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CLC number: TQ174.75; TB323

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Received: 2004-10-26

Revision Accepted: 2004-12-20

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Journal of Zhejiang University SCIENCE B 2005 Vol.6 No.3 P.213-218


Sintering and microstructure of silicon carbide ceramic with Y3Al5O12 added by sol-gel method

Author(s):  GUO Xing-zhong, YANG Hui

Affiliation(s):  Center of Nano-Science & Nano-Technology, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   gxzh_zju@163.com

Key Words:  Silicon carbide, Ceramic, Yttrium aluminum garnet (YAG), Sol-gel

GUO Xing-zhong, YANG Hui. Sintering and microstructure of silicon carbide ceramic with Y3Al5O12 added by sol-gel method[J]. Journal of Zhejiang University Science B, 2005, 6(3): 213-218.

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author="GUO Xing-zhong, YANG Hui",
journal="Journal of Zhejiang University Science B",
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%0 Journal Article
%T Sintering and microstructure of silicon carbide ceramic with Y3Al5O12 added by sol-gel method
%A GUO Xing-zhong
%J Journal of Zhejiang University SCIENCE B
%V 6
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%P 213-218
%@ 1673-1581
%D 2005
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2005.B0213

T1 - Sintering and microstructure of silicon carbide ceramic with Y3Al5O12 added by sol-gel method
A1 - GUO Xing-zhong
A1 - YANG Hui
J0 - Journal of Zhejiang University Science B
VL - 6
IS - 3
SP - 213
EP - 218
%@ 1673-1581
Y1 - 2005
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2005.B0213

silicon carbide (SiC) ceramic with YAG (Y3Al5O12) additive added by sol-gel method was liquid-phase sintered at different sintering temperatures, and the sintering mechanism and microstructural characteristics of resulting silicon carbide ceramics were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and elemental distribution of surface (EDS). YAG (yttrium aluminum garnet) phase formed before the sintering and its uniform distribution in the SiC/YAG composite powder decreased the sintering temperature and improved the densification of SiC ceramic. The suitable sintering temperature was 1860 °C with the specimen sintered at this temperature having superior sintering and mechanical properties, smaller crystal size and fewer microstructure defects. Three characteristics of improved toughness of SiC ceramic with YAG added by sol-gel method were microstructural densification, main-crack deflection and crystal ‘bridging’.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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