Heat-resistant ceramics of -eucryptite composition was synthesized in the current work. To this end, the method of ceramics production was combined with the principle of reactive formation of the material structure. Taking into account the calculated data about the compositions of eutectics and temperature of their melting in the specific binary systems Li 2 O2SiO 2-Li 2 OÀl 2 Î 3 2SiO 2 and Li 2 O2SiO 2-Li 2 OÀl 2 Î 3 4SiO 2 , a comparatively low-melting glass was developed in the system Li 2 O-Àl 2 Î 3-SiO 2 (with a melting temperature of 1250 0 Ñ). Its function in the composition consists in the intensification of the processes associated with the formation of the crystalline phase of -eucryptite and sintering of the ceramic material as a whole. Based on the results of experimental study, we concluded that the duration and temperature of sintering of ceramics directly determine its microstructure and physicotechnical properties. In order to achieve the complex of the highest indices, the firing of eucryptite ceramics should be performed at the temperature of 1350 0 Ñ with the isothermal time of 3 h. -eucryptite phase is formed as the distinct prismatic crystals of hexagonal shape with a size of 4-7 m. The developed composition of eucryptite ceramics allows obtaining the products or individual elements with varying complexity of shapes, which significantly reduces the amount of rejects.
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