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Effect of the Formation of SiC Whisker on the Properties of Al2O3-ZrO2-C Materials

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Abstract:

SiC whisker was produced through the reaction between carbon and silicon powders during the sintering of Al2O3-ZrO2-C materials. The thermodynamic conditions and growth mechanism were discussed. The results showed that rod-shaped and dumbbell-shaped SiC whiskers are formed, respectively. The main composition of the beads in dumbbell-shaped whisker is SiOX with a small amount of Na and Ca, but the rods are SiC. In addition, the dumbbell-shaped SiC whisker contributed less than straight rod-shaped SiC whisker to improving the physical properties of Al2O3-ZrO2-C materials.

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Periodical:

Key Engineering Materials (Volumes 336-338)

Pages:

1263-1265

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.336-338.1263

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Online since:

April 2007

Authors:

Hua Zhi Gu, Rong Dan Shao, Wen Jie Zhang, Hou Zhi Wang, Kai Bao Yang, Shu Zhong Yu

Keywords:

Al2O3-ZrO2-C Material, Growth Mechanism, Mechanical Strength, SiC Whisker

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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