The elemental chemical composition showed a heightened weight content of calcium (Ca = 5.9%) in the samples, which promotes formation of anorthite, which increases the strength of articles, and a heightened weight content of carbon (C = 14.79%) attests the introduction of fuel into the green part body. The heightened weight content of fuel in the green body promotes uniform sintering of the ceramic inside the sample. A heightened weight content of iron (Fe = 2.98%) and alkali (R2O = Na2O + K2O = 2.57%) in the sample will promote formation of a liquid phase at 950°C. X-ray phase analysis was confirmed by elemental analysis indicating that the heightened calcium content promotes the formation of anorthite.
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Translated from Steklo i Keramika, No. 1, pp. 37 – 41, January, 2020.
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Abdrakhimova, E.S., Abdrakhimov, V.Z. Interrelation of the Phase and Chemical Compositions with the Longevity of the Ceramic Material of the > 600 yr Old Barcelona Catholic Cathedral. Glass Ceram 77, 33–36 (2020). https://doi.org/10.1007/s10717-020-00232-5
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DOI: https://doi.org/10.1007/s10717-020-00232-5