The effect of repeated nonisothermal heating to 1500°C on shrinkage and crystallization of quartz ceramic with added alkali (0.5% Na2O) and monolithic fuzed quartz is studied. Marked (up to 10%) tridymite formation is detected in specimens with added alkali and with a predominant cristobalite content. Some properties are provide for specimens after single-stage heating to 1500°C. Depending on additive content specimens have open porosity of 6 – 9% and ultimate strength in compression of 130 – 185 MPa.
Refractories and Industrial Ceramics – Springer Journals
Published: Oct 25, 2016
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