TY  - JOUR
AU  - Schober, T.
TI  - Phase diagrams in the proton conductor systems Sr6Ta2O22 x nH2O and Sr5.92Ta2.08O11.12 x n H2O
JO  - Solid state ionics
VL  - 177
SN  - 0167-2738
CY  - Amsterdam [u.a.]
PB  - Elsevier Science
M1  - PreJuSER-50725
SP  - 471
PY  - 2006
N1  - Record converted from VDB: 12.11.2012
AB  - The systems Sr6Ta2O11-H2O and Sr5.92Ta2.08O11.12-H2O were investigated. At high temperatures, both compounds are normal proton conductors but at lower temperatures show the formation of hydrate phases (here labelled p-phases). The latter are deleterious if the above compounds were to be used in fuel cells, sensors and pumping devices. The phase diagrams of the 2 systems were determined using thermo-ravimetry. The solubilities of water vapor in the a-phases were measured. Considering 2-phase mixtures of a and, the plateau vapor pressures were determined as well as the pertinent thermodynamic parameters. The ot alpha ->alpha+beta solvus was also investigated. The present study complements recent work [I. Animitsa, A. Nieman, A. Sharafutdinov, S. Nochrin, Solid State Ionics 136-137 (2000) 265; I. Animitsa, A. Nieman, S. Titova.. N. Kochetova, E. Isaeva, A. Sharafutdinov, N. Timofeeva, Ph. Colomban, Solid State Ionics 156 (2003) 95]. (c) 2005 Elsevier B.V. All rights reserved.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000236301000006
DO  - DOI:10.1016/j.ssi.2005.11.010
UR  - https://juser.fz-juelich.de/record/50725
ER  -