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Interceram - International Ceramic Review

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01.10.2018 | Research and Development

Effects of TiO₂ on the Microstructure of Synthesized Elongated Mullite

verfasst von: Xiangong Deng, Yongwan Wu, Tingting Wei, Peng Guo, Songlin Ran, Lei Han, Chuangang Fan, Prof. Dr. Haijun Zhang

Erschienen in: Interceram - International Ceramic Review | Ausgabe 6/2018

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Abstract

Elongated mullite was synthesized via an in situ solid-phase reaction using α-Al₂O₃ and SiO₂ as the raw materials and TiO₂ as an additive, and characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), and transmission electron microscopy (TEM). On the basis of thermodynamic analysis of the reaction process, the effects of TiO₂ content and reaction temperature on the phase composition, phase contents, and microstructure of the synthesized samples were investigated. The results showed that elongated mullite with a length of about 8.0 μm was formed for the sample with 7 mass-% TiO₂ at 1873 K. The dosage of TiO₂ exceeded its solid solubility limit in mullite which resulted in the anisotropic growth of mullite grains.

Vorheriger Artikel Effect of Titanium and Vanadium on Nanomullite Derived from Diphasic Precursor Gel

Nächster Artikel The Interfacial Behavior of Alumina-Magnesia Castables and Molten Slag under an Alternating Magnetic Field

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Titel: Effects of TiO2 on the Microstructure of Synthesized Elongated Mullite
verfasst von: Xiangong Deng
Yongwan Wu
Tingting Wei
Peng Guo
Songlin Ran
Lei Han
Chuangang Fan
Prof. Dr. Haijun Zhang
Publikationsdatum: 01.10.2018
Verlag: Springer Fachmedien Wiesbaden
Erschienen in: Interceram - International Ceramic Review / Ausgabe 6/2018
Print ISSN: 0020-5214
Elektronische ISSN: 2523-8957
DOI: https://doi.org/10.1007/s42411-018-0051-y

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