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PTÁČEK, P. OPRAVIL, T. ŠOUKAL, F. TKACZ, J. MÁSILKO, J. BARTONÍČKOVÁ, E.
Original Title
The field of solid solutions in ternary system of synthetic apatite-type alkaline earth element-yttrium-silicate oxybritholite phases of the composition: AEE(delta)Y(10-delta)[SiO4](6)O3-0.5 delta, where AEE=Ca, Sr and Ba
Type
journal article in Web of Science
Language
English
Original Abstract
This contribution deals with the synthesis, properties and investigation of the field of solid solutions formed between the three end-members of apatite-type alkaline earth element-yttrium-silicate oxybritholites with the hexagonal structure (P6(3)/m). The stoichiometric composition of these compounds corresponds to the formula AEE(delta)Y(10-delta)(SiO4)(6)O3-0.5 delta, where AEE=Ca, Sr and Ba and parameter delta -> 2. These compounds and their solid solutions crystallize from non-equilibrium high temperature flux as the main product of sinter-crystallization process. Increasing ionic radius of AEE cations has significant effect to the lattice parameters, properties and miscibility of apatite phases. While there is non-limited miscibility of solid solutions formed between Ca2Y8[SiO4](6)O-2 and Sr2Y8[SiO4](6)O-2, the highest content of barium in the binary solution with these species is limited to 28% and 38%, respectively. The connecting line of these points marks out the borderline for the field of solid solutions in the ternary system. All attempts for the preparation of pure Ba2Y8[SiO4](6)O-2 end-member via the ceramic method were not successful.
Keywords
Apatite; Oxybritholite; Yttrium silicates; Solid solution; Sinter-crystallization.
Authors
PTÁČEK, P.; OPRAVIL, T.; ŠOUKAL, F.; TKACZ, J.; MÁSILKO, J.; BARTONÍČKOVÁ, E.
Released
8. 1. 2016
Publisher
Elsevier Ltd
Location
THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
ISBN
0272-8842
Periodical
Ceramics International
Year of study
42
Number
5
State
United Kingdom of Great Britain and Northern Ireland
Pages from
6154
Pages to
6167
Pages count
14
URL
http://www.sciencedirect.com/science/article/pii/S0272884216000262
Full text in the Digital Library
http://hdl.handle.net/11012/70009
BibTex
@article{BUT124263, author="Petr {Ptáček} and Tomáš {Opravil} and František {Šoukal} and Jakub {Tkacz} and Jiří {Másilko} and Eva {Bartoníčková}", title="The field of solid solutions in ternary system of synthetic apatite-type alkaline earth element-yttrium-silicate oxybritholite phases of the composition: AEE(delta)Y(10-delta)[SiO4](6)O3-0.5 delta, where AEE=Ca, Sr and Ba", journal="Ceramics International", year="2016", volume="42", number="5", pages="6154--6167", doi="10.1016/j.ceramint.2016.01.003", issn="0272-8842", url="http://www.sciencedirect.com/science/article/pii/S0272884216000262" }