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The study examines sialon dissolution in extreme temperatures, revealing its reaction behavior under hydrothermal conditions.
The water-sialon reaction was studied at T = 400-500 °C, PH2O = 50.7–60.8 MPa to estimate the resistance of sialon under hydrothermal conditions. The reaction results in dissolution of sialon and subsequent formation of α-crystobalite and tobelite - ammonium containing mica, with induction period of 4 — 7 hours. The rates of sialon dissolution and new phases crystallization depend mainly on temperature and are comparatively high at 500 °C.
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A. I. Basikhina (1991) studied this question.
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