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Effect of Mineral and Phase Composition of Starting Mixtures on Solid-Phase Synthesis of Cordierite

V.Pavlikov,
 
E.Garmash,
 
V.O.Yurchenko,
 
O.Grigoriev,
 
V.V.Pavlikov
 

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Omeliana Pritsaka str.,3, Kyiv, 03142, Ukraine
Powder Metallurgy - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2010, #09/10
http://www.materials.kiev.ua/article/1664

Abstract

The paper examines the phase transformations and formation of cordierite under solid-phase sintering using different natural and synthetic minerals, including binary compounds (mullite, spinel, enstatite) formed in intermediate synthesis stages. It is established that the synthesis of cordierite takes two stages: formation of three thermodynamically stable binary oxide compounds as magnesium aluminum spinel, mullite, and enstatite; formation of cordierite from a multi-phase mixture containing, besides binary compounds, free crystalline oxides α-Al2O3 and SiO2.


BINARY COMPOUNDS, CORDIERITE, EUTECTIC, MINERALS, PHASE TRANSFORMATIONS, SOLID-PHASE SYNTHESIS, THERMAL EXPANSION

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