Ceramics in the K2O–CaO–SO3–P2O5 SystemстатьяИсследовательская статья
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Дата последнего поиска статьи во внешних источниках: 12 января 2022 г.
Аннотация:Ceramics in the K2O–CaO–SO3–P2O5 system has been prepared from powder mixtures of potassium hydrogen sulfate KHSO4 and calcium hydroxyapatite Ca10(PO4)6(OH)2 at molar ratiosKHSO4/Ca10(PO4)6(OH)2 = 2/1, 4/1, and 6/1. The powder mixtures were obtained in acetone under mechanical activation conditions using a planetary mill. After homogenization, the phase composition of powder mixtures included monetite CaHPO4, singenite K2Ca(SO4)2⋅H2O, and calcium hydroxyapatiteСa10(PO4)6(OH)2. After firing at 700–900°C the phase composition of ceramics manufactured from the powder mixtures included phases of potassium-substituted tricalcium phosphate Сa10K(PO4)7 and calciolangbeiniteK2Ca2(SO4)3, as well as potassium sulfate K2SO4 at molar ratios KHSO4/Ca10(PO4)6(OH)2 = 4/1 and 6/1.Ceramic materials whose phase composition includes calciolangbeinite K2Ca2(SO4)3 and potassium-substitutedtricalcium phosphate Сa10K(PO4)7 can be used as resorbable porous material for curing defects of bone tissue by regenerative medicine methods or as a matrix on designing luminescent/thermoluminescent materials. Ceramic materials in K2O–CaO–SO3–P2O5 system have been obtained for the first time, therefore, additional studies are necessary to determine the optimal phase ratio for the noted applications. Keywords: hydroxyapatite, potassium hydrogen sulfate, monetite, singenite, calciolangbeinite, potassium-substituted tricalcium phosphate