Abstract
Phase equilibria in the quasi-binary sections Ca3(PO4)2-CaMPO4 (M = Na, K) are distinguished by high-temperature isomorphism of glaserite-like phases α’-Ca3(PO4)2 and α-CaMPO4. The main differences of the Ca3(PO4)2-CaKPO4 system from the Ca3(PO4)2-CaNaPO4 system are a shift of invariant equilibria toward higher temperatures, deceleration of phase transformations, and the emergence of polymorphism of an intermediate phase of an ordered solid solution based on α-CaKPO4. The low-temperature modification of this phase of a composition near Ca8K2(PO4)6 has the apatite structure with unoccupied hexagonal channels.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
T. Kanazawa, Inorganic Phosphate Materials (Elsevier Science Ltd, Oxford, 1989).
J. Ando, Bull. Chem. Soc. Jpn. 31, 201 (1958).
J. Ando and S. Matsuno, Bull. Chem. Soc. Jpn. 41, 342 (1968).
T. Znamierowska, Pol. J. Chem. 55, 747 (1981).
J. Berak and T. Znamierowska, Rocz. Chem. 46, 1921 (1972).
M. A. Bredig, J. Phys. Chem. 46, 747 (1942).
F. H. Chung, J. Appl. Crystallogr. 7, 526 (1974).
T. Ozawa, Bull. Chem. Soc. Jpn. 38, 1881 (1965).
J. H. Flynn and L. A. Wall, J. Polym. Sci., Part B: Polym. Lett. 4, 323 (1966).
S. Vyazovkin, J. Therm. Anal. Cal. 83, 45 (2006).
P. V. Evdokimov, V. I. Putlyaev, D. A. Merzlov, et al., Nanosist.: Fiz. Khim. Mat. 4, 48 (2013).
V. I. Putlayev, P. V. Evdokimov, A. V. Garshev, et al., Rus. Phys. J. 56, 1183 (2014).
V. A. Morozov, A. A. Belik, R. N. Kotov, et al., Crystallogr. Rep. 45, 13 (2000).
J. M. Millet, A. Sebaoun, and G. Thomas, J. Therm. Anal. 29, 445 (1984).
G. Celotti and E. Land, J. Eur. Ceram. Soc. 23, 851 (2003).
M. Yashima and A. Sakai, Chem. Phys. Lett. 372, 779 (2003).
M. Azrour, M. Azdouz, B. Manoun, et al., J. Phys. Chem. Solids 72, 1199 (2011).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © P.V. Evdokimov, V.I. Putlyaev, V.K. Ivanov, A.P. Garshev, T.B. Shatalova, N.K. Orlov, E.S. Klimashina, T.V. Safronova, 2014, published in Zhurnal Neorganicheskoi Khimii, 2014, Vol. 59, No. 11, pp. 1462–1471.
Rights and permissions
About this article
Cite this article
Evdokimov, P.V., Putlyaev, V.I., Ivanov, V.K. et al. Phase equilibria in the tricalcium phosphate-mixed calcium sodium (potassium) phosphate systems. Russ. J. Inorg. Chem. 59, 1219–1227 (2014). https://doi.org/10.1134/S0036023614110084
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0036023614110084