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HomeSolid State PhenomenaSolid State Phenomena Vol. 281Effect of WO3 on the Performances of Cordierite...

Effect of WO₃ on the Performances of Cordierite Ceramics Synthesized by Using Kyanite as Raw Materials

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Abstract:

In order to synthesize cordierite ceramics with low thermal expansion coefficient and good properties, in our work, the cordierite ceramics were prepared by using talc, natural containing zirconium kyanite, common kyanite and industrial Al₂O₃ as raw materials, introducing the right amount of WO₃ (introducing tungsten acid) as catalyst. The effects of the introduced WO₃ on the phase composition, sintering characters, microstructure and thermal expansion coefficient of the cordierite ceramics were investigated. The results show that the introduction of WO₃ can eliminate the intermediate phase magnesia-alumina spinel and promote the formation of cordierite; the as-prepared cordierite ceramics synthesized by using natural containing zirconium kyanite as raw materials have high densification degree and low thermal expansion coefficient (1.53×10^-6/°C, Rt~1000 °C).

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High-Performance Ceramics X

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Periodical:

Solid State Phenomena (Volume 281)

Pages:

99-104

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.281.99

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Online since:

August 2018

Authors:

Meng Li Qin, Xi Tang Wang, Zhou Fu Wang, Yan Ma, Hao Liu

Keywords:

Cordierite, Natural Containing Zirconium Kyanite, Thermal Expansion Coefficient, WO₃

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© 2018 Trans Tech Publications Ltd. All Rights Reserved

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