Abstract
We have studied the effect of heat treatment in a wide temperature range (from 300 to 1500°C) on the phase composition, heat effects and weight loss of powder materials in a system of calcium phosphates and magnesium phosphates with (Ca + Mg)/P = 2. The results demonstrate that crystalline magnesium-substituted whitlockite phases begin to form at temperatures above 600°C. Raising the heat treatment temperature reduces the degree of magnesium substitution for calcium in the structure of the magnesium-substituted whitlockite. Tetracalcium phosphate, a high-temperature phase, is formed through apatite phase recrystallization.
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Original Russian Text © M.A. Goldberg, V.V. Smirnov, O.S. Antonova, L.I. Shvorneva, S.V. Smirnov, S.V. Kutsev, S.M. Barinov, 2016, published in Neorganicheskie Materialy, 2016, Vol. 52, No. 11, pp. 1194–1199.
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Goldberg, M.A., Smirnov, V.V., Antonova, O.S. et al. Heat treatment-induced phase transformations of materials in a system of calcium phosphates and magnesium phosphates with (Ca + Mg)/P = 2. Inorg Mater 52, 1121–1125 (2016). https://doi.org/10.1134/S0020168516110029
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DOI: https://doi.org/10.1134/S0020168516110029