Effects of CeO2 on phase transformation towards cordierite in MgO-Al2O3-SiO2 system

The properties of cordierite ceramic depend upon additives and phase transformation in sintering. XRD and DTA techniques were used to study the effects of CeO2 upon the transformation towards cordierite. As the experimental results show, with an increase of CeO2 content, the temperature drops at whi...

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Bibliographic Details
Published in:Materials letters 2001-10, Vol.51 (1), p.68-72
Main Authors: SHI, Z. M, LIANG, K. M, GU, S. R
Format: Article
Language:English
Subjects:
Ceramics and refractories (including borides, carbides, hydrides, nitrides, oxides, and silicides)
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Growth from solid phases (including multiphase diffusion and recrystallization)
Materials science
Methods of crystal growth
physics of crystal growth
Other materials
Physics
Specific materials
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Summary:The properties of cordierite ceramic depend upon additives and phase transformation in sintering. XRD and DTA techniques were used to study the effects of CeO2 upon the transformation towards cordierite. As the experimental results show, with an increase of CeO2 content, the temperature drops at which cordierite forms through diffusion in the solid state. When liquid has occurred, the crystallisation temperature first drops with CeO2 content and then rises, the lowest measured temperatures being at 2-4 wt% of CeO2. The effect of CeO2 can be associated with the alteration of ion diffusion. 20 refs.
ISSN:0167-577X
1873-4979
DOI:10.1016/S0167-577X(01)00267-1