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.
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1Part 1 of the article was published in Novye Ogneupory No. 7 (2014), parts 2 – 7 in Nos. 1, 3, 4, 6, 7, and 9 (2015), and parts 8 and 9 in Nos. 1 and 3 (2016)
Translated from Novye Ogneupory, No. 5, pp. 27 – 33, May 2016.
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Pivinskii, Y.E., Dyakin, P.V. & Kolobov, A.Y. Research in the Area of Preparing Materials Based on Fuzed Quartz HCBS. Part 10. Some Properties of Cristobalite-Containing Materials1 . Refract Ind Ceram 57, 252–257 (2016). https://doi.org/10.1007/s11148-016-9962-1
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DOI: https://doi.org/10.1007/s11148-016-9962-1