The influence of the hydrothermal method for the synthesis of initial powders using chemical reagents and illite clay as initial components on both the phase composition and structure and some properties of mullite-zirconium ceramics has been studied.
It is shown that mullite, ZrO2 tetragonal modification predominates in the sintered ceramic material, there are also closed pores. With an increase in the firing temperature and especially with the addition of illite clay, the sinterability and, consequently, the compressive strength increase. The modulus of elasticity with an increase in the temperature difference up to 1000/20 ° С, as with the addition of illite clay, during thermal shock increases to 35 and 95 GPa, respectively, while at 500/20 - up to 20 and 22 GPa.
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