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The relation of pyroplastic deformation and liquid viscosity in vitreous ceramics

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Abstract

Experiments were conducted to study the relation of pyroplastic deformation and liquid viscosity in vitreous ceramics. The pyroplastic deformation was researched through experimentation in a muffle furnace. The quenching method was introduced to gain the chemical composition of liquid phase in the sample. The experiment was carried out in a tube furnace. The Riboud model was selected to calculate the liquid viscosities based on the comprehensive consideration of different viscosity models. Generally, the small viscosity value of liquid phase in the sample at high temperature accelerates the deformation of the sample. On the other hand, the deformation is retarded if the viscosity value of the generated liquid phase is thicker than 2 × 104 Pa s. The chemical composition of the sample and the secondary mullite phase in the sample are other parameters which strongly impact the pyroplastic deformation of vitreous china.

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Acknowledgements

The financial supports on the Project 51502230 from the National Natural Science Foundation of China are gratefully acknowledged. The authors are thankful to Prof. Liushun Wu from Anhui University of Technology for his valuable suggestions and thermodynamic calculation by FactSage 7.0.

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Authors and Affiliations

  1. State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, China

    Tengfei Deng & Junyang Fang

  2. School of Materials Science and Engineering, Northwestern Polytechnical University, Xian, 710072, China

    Shuang Lan

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  1. Tengfei Deng
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  2. Junyang Fang
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  3. Shuang Lan
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Correspondence to Tengfei Deng.

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Deng, T., Fang, J. & Lan, S. The relation of pyroplastic deformation and liquid viscosity in vitreous ceramics. J Aust Ceram Soc 53, 635–643 (2017). https://doi.org/10.1007/s41779-017-0075-1

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