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  4. № 09/10 2010
  5. P. 89

Mechanochemical Аctivation of Kaolinite, Pyrophyllite and Talc and its Effect on the Synthesis of Cordierite and Properties of Cordierite Ceramics

V.Pavlikov,
 
E.Garmash,
 
V.A.Yurchenko,
 
I.Pleskach,
 
G.Olieinyk,
 
O.Grigoriev
 

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/1665

Abstract

The paper examines the mechanochemical activation of starting minerals (kaolinite, pyrophyllite, and talc) and their effect on the solid-phase synthesis and properties of cordierite. Binary oxide compounds (spinel, mullite, enstatite, forsterite) are synthesized. It is established that binary compounds and crystalline silica should be minimized to decrease the synthesis temperature of cordierite. Process for synthesis and production of cordierite ceramics with lower thermal expansion coefficient ((1.0–1.2) •10–6 °C–1) are developed.


COEFFICIENT OF THERMAL EXPANSION, CORDIERITE, KAOLINITE, MECHANOCHEMICAL ACTIVATION, NATURAL MINERALS, PYROPHYLLITE, SOLID-PHASE SYNTHESIS, TALC

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