Abstract
The values of TCLE (temperature coefficient of linear expansion) of glaze and clinker brick on the basis of raw kaolin and aluminum-containing nanotechnological raw materials are established, and the mechanism of glaze formation during burn is established by IR spectroscopy and electron microscopy. During the glaze formation, phase separation of the glass takes place, which precedes the crystallization process. As a result of liquation, the glaze glass is divided into regions enriched in silica, zirconium, sodium, boron, and calcium. The study of heat-treated monoliths shows that the liquation structure is markedly reduced at temperatures of 700 and 950°C. The temperature interval of liquation is a function of the heat treatment conditions of the glaze. It is shown that the creek resistance of glazed clinker products is mainly due to the ratio of the mean TCLE of the mass and the glaze.
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