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Phase relations in the system Na2ZnP2O7-Zn2P2O7

Published online by Cambridge University Press:  03 March 2011

R.G. Grebenshchikov ,
G.A. Mikirticheva ,
V.I. Shitova ,
M.A. Petrova ,
A.S. Novikova ,
S.K. Kuchaeva  and
L.U. Grabovenko
R.G. Grebenshchikov
Affiliation:
Institute of Silicate Chemistry of the Russian Academy of Science, Saint Petersburg, Russia
G.A. Mikirticheva
Affiliation:
Institute of Silicate Chemistry of the Russian Academy of Science, Saint Petersburg, Russia
V.I. Shitova
Affiliation:
Institute of Silicate Chemistry of the Russian Academy of Science, Saint Petersburg, Russia
M.A. Petrova
Affiliation:
Institute of Silicate Chemistry of the Russian Academy of Science, Saint Petersburg, Russia
A.S. Novikova
Affiliation:
Institute of Silicate Chemistry of the Russian Academy of Science, Saint Petersburg, Russia
L.U. Grabovenko
Affiliation:
Institute of Silicate Chemistry of the Russian Academy of Science, Saint Petersburg, Russia
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Abstract

Data on phase relations in the system Na2ZnP2O7-Zn2P2O7 reported in the literature are scarce and contradictory. The system was first studied by Berul and Voskresenskaya [Russ. J. Inorg. Mater. (English transl.) 4 (12), 2129 (1968)], who established the existence of a congruently melting intermediate compound, Na8Zn6(P2O7)5. In the paper by Majling et al. [Chem. Zvesti. 28 (3), 294 (1974)], the system Na2ZnP2O7-Zn2P2O7 is considered to be eutectic. The subsolidus phase relations are represented by a mixture of two phases, terminal members of the system. The existence of the above-mentioned compound was not confirmed for this system. In the present work we studied the phase relations in the system Na2ZnP2O7-Zn2P2O7 on samples obtained by solid-state synthesis and glass crystallization. The sequence of crystallization of phases was investigated, and the equilibrium and metastable phase diagrams were constructed for the system.

Type
Articles
Information
Journal of Materials Research , Volume 10 , Issue 8 , August 1995 , pp. 2017 - 2023
Copyright
Copyright © Materials Research Society 1995

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References

REFERENCES

1Berul, S. I. and Voskresenskaya, N. K., Russ. J. Inorg. Mater. (English transl.) 4(12), 2129–2136 (1968).Google Scholar
2Majling, J., Palčo, S., Hanic, F., and Petrovic, J., Chem. Zvesti. 28(3), 294–297 (1974).Google Scholar
3Lazarev, A. N., Tenisheva, T. F., and Petrova, M.A., Izv. Akad. Nauk. SSSR Neorgan. Mater, (in Russian) 1(8), 1379–1381 (1965).Google Scholar