P. P. Fedorov, M. N. Mayakova, V. A. Maslov, A. E. Baranchikov, V. K. Ivanov, A. A. Pynenkov, M. A. Uslamina, K. N. Nishchev, “The solubility of sodium and potassium fluorides in strontium fluoride”, Nanosystems: Physics, Chemistry, Mathematics, 2017, Volume 8, Issue 6,Pages <nobr>830

This article is cited in 4 papers

CHEMISTRY AND MATERIAL SCIENCE

The solubility of sodium and potassium fluorides in strontium fluoride

P. P. Fedorov^ab, M. N. Mayakova^a, V. A. Maslov^a, A. E. Baranchikov^c, V. K. Ivanov^c, A. A. Pynenkov^b, M. A. Uslamina^b, K. N. Nishchev^b

^a Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow, 119991, Russia
^b Ogarev Mordovia State University, Saransk, 430005, Russia
^c Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow, 119991, Russia

Abstract: The phase diagram of the NaF-SrF$_2$ system was studied by thermal analysis and X-ray powder diffraction analysis with the determination of the chemical composition. The system was found to be of the eutectic type. The eutectic coordinates are 853$^\circ$C, 32 mol % SrF$_2$. A narrow range of the existence of solid solution Sr$_{1-x}$Na$_x$F$_{2-x}$ was established. The NaF solubility reaches a maximal value of $x$ = 0.035 at eutectic temperature. The solubility of KF in SrF$_2$ is very low.

Keywords: strontium fluoride, sodium fluoride, potassium fluoride, nanofluorides, NaF-SrF$_2$ phase diagram, solid solution.

Received: 10.11.2017
Revised: 15.11.2017

Language: English

DOI: 10.17586/2220-8054-2017-8-6-830-834