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Microwave Sintering of Zirconia Toughened Mullite (ZTM)

Published online by Cambridge University Press:  15 February 2011

J. Cai ,
C. Y. Song ,
B. S. Li ,
X. X. Huang ,
J. K. Guo  and
Y. L. Tian
J. Cai
Affiliation:
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China
C. Y. Song
Affiliation:
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China
B. S. Li
Affiliation:
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China
X. X. Huang
Affiliation:
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China
J. K. Guo
Affiliation:
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China
Y. L. Tian
Affiliation:
Department of Electric and Computer Engineering, George Mason University, Fairfax, VA
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Abstract

Microwave sintering of zirconia toughened mullite (ZTM) has been performed in a single mode applicator. In comparison with conventional sintering, microwave processing of ZTM leads to a higher density and finer grain size. Microstructure of microwave sintered ZTM was characterized by TEM and HRTEM techniques. The pinning of intergranular ZrO2 dispersoids retarded the grain growth of mullite matrix. The observation of a considerable number of trans-granular microcracks indicates that microcracking toughening is the main toughening mechanism for ZTM.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 347: Symposium O – Microwave Processing of Materials IV , 1994 , 545
Copyright
Copyright © Materials Research Society 1994

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References

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