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High‐Temperature Electrical Properties in the ThO 2 ‐Rich Region of ThO 2 ‐RE 2 O 3 Systems
Author(s) -
Hufschmidt Heike,
Weyl Axel,
Janke Dieter
Publication year - 1996
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1996.tb07939.x
Subject(s) - fluorite , atmospheric temperature range , solid solution , electrolyte , doping , thermodynamics , chemical stability , materials science , range (aeronautics) , phase (matter) , thermal conduction , stability (learning theory) , analytical chemistry (journal) , mineralogy , chemistry , physics , computer science , metallurgy , composite material , electrode , optoelectronics , organic chemistry , chromatography , machine learning
In the present study the n ‐type electronic conduction in terms of the parameter p e, and the phase relations in several ThO 2 ‐RE2O 3 systems were examined. Large fluorite solid solution regions exist at elevated temperatures. It was demonstrated that RE 2 O 3 ‐doped thoria compositions feature lower parameters p e, and higher chemical stability than the conventional stabilized ZrO2 electrolytes. The results are given in terms of the characteristic parameter p e, in the temperature range from 1000° to 1600°C. The experimental investigations were made using a new thermodynamic measuring system.