Ceramics in the K2O–CaO–SO3–P2O5 System.

Autor: Safronova, T. V., Akhmedov, M. M., Shatalova, T. B., Tikhonova, S. A., Kazakova, G. K.
Zdroj: Russian Journal of Inorganic Chemistry; Aug2021, Vol. 66 Issue 8, p1057-1066, 10p
Abstrakt: 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 ratios KHSO4/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 hydroxyapatite Сa10(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 calciolangbeinite K2Ca2(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-substituted tricalcium 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. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
Externí odkaz: