PL EN


Preferences help
enabled [disable] Abstract
Number of results
Journal
2008 | 6 | 1 | 27-32
Article title

Phase transitions of K2TaF7 within 680–800°C

Content
Title variants
Languages of publication
EN
Abstracts
EN
Three thermal effects on heating/cooling of K2TaF7 in the temperature interval of 680–800°C were investigated by the DSC method. The values determined for the enthalpy change of the individual processes are: ΔtransIIHm(K2TaF7; 703°C) = 1.7(2) kJ mol−1, ΔtransIHm(K2TaF7; 746°C) = 19(1) kJ mol−1 and ΔtransIIIHm(K2TaF7; 771°C) = 13(1) kJ mol−1. The first thermal effect was attributed to a solid-solid phase transition; the second to the incongruent melting of K2TaF7 and the third to mixing of two liquids. These findings are supported by in situ neutron powder diffraction experiments performed in the temperature interval of 654–794°C. [...]
Publisher

Journal
Year
Volume
6
Issue
1
Pages
27-32
Physical description
Dates
published
1 - 3 - 2008
online
1 - 3 - 2008
Contributors
author
  • Institute of Inorganic Chemistry, Slovak Academy of Sciences, SK-845 36, Bratislava, Slovak Republic
  • Institute of Inorganic Chemistry, Slovak Academy of Sciences, SK-845 36, Bratislava, Slovak Republic
author
  • Institute of Inorganic Chemistry, Slovak Academy of Sciences, SK-845 36, Bratislava, Slovak Republic
  • Institute of Inorganic Chemistry, Slovak Academy of Sciences, SK-845 36, Bratislava, Slovak Republic
  • Institute of Inorganic Chemistry, Slovak Academy of Sciences, SK-845 36, Bratislava, Slovak Republic
  • Institute of Inorganic Chemistry, Slovak Academy of Sciences, SK-845 36, Bratislava, Slovak Republic, uachboca@savba.sk
  • Institutionen főr Materialkemi, Uppsala Universitet, Box 538, 751 21, Uppsala, Sweden
References
  • [1] F. Fairbrother, The Chemistry of Niobium and Tantalum (Elsevier, New York, 1967)
  • [2] A.I. Agulyansky, The Chemistry of Tantalum and Niobium Fluoride Compounds (Elsevier, Amsterdam 2004)
  • [3] P.N. Zuj Bin-Sin, N.P. Luzhnaya, V.I. Konstantinov, Zh. Neorg. Khim. 8, 389 (1963) (in Russian) (English translation Russ. J. Inorg. Chem. 8, 201 (1963))
  • [4] F.V. Kovalev, V.E. Kartsev, V.M. Ioffe, M.E. Leonov, Zh. Neorg. Khim. 18, 1352 (1973) (in Russian)
  • [5] I.D. Efros and M.F. Lantratov, Zh. Prikl. Khim. 37, 2521 (1964) (in Russian) (English translation J. Appl. Chem. USSR 37, 2483 (1964))
  • [6] I. Nerád, E. Mikšíková, V. Daněk, Chem. Papers 57, 73 (2003)
  • [7] A.I. Agulyansky and V.A. Bessonova, Zh. Prikl. Khim. 56, 489 (1983)(in Russian)
  • [8] K. Adamkovičová, P. Fellner, L. Kosa, P. Lazor, I. Nerád, I. Proks, Thermochim. Acta, 191, 57 (1991) http://dx.doi.org/10.1016/0040-6031(91)87237-Q[Crossref]
  • [9] K. Adamkovičová, L. Kosa, I. Nerád, I. Proks, Thermochim. Acta, 287, 1 (1996) http://dx.doi.org/10.1016/0040-6031(96)02993-0[Crossref]
  • [10] V. Langer, Ľ. Smrčok, M. Boča, Acta Cryst. E62, i91 (2006)
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.-psjd-doi-10_2478_s11532-007-0056-2
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.