Electron Microscopical Investigation of Interdiffusion and Phase Formation at Gd2O3/CeO2- and Sm2O3/CeO2-Interfaces
1st Edition
Published on 17. March 2015
XXIV, 102 pages
978-3-658-08793-7 (ISBN)
Description
Christian Rockenhäuser adresses phase formation and cation interdiffusion of the GdxCe1-xO2-x/2-and SmxCe1-xO2-x/2-material systems at temperatures ranging from 970 to 1270°C. Diffusion couples with CeO2/Sm2O3 and CeO2/Gd2O3 interfaces were fabricated for the investigations. The resulting reaction phases were investigated utilizing transmission electron microscopy (TEM) and allow conclusions regarding the phase diagrams in the examined temperature range. A miscibility gap can be ruled out for GdxCe1-xO2-x/2 across the whole composition range. Cation interdiffusion coefficients were determined for both material systems by measuring and evaluating concentration profiles at the material interfaces. The activation enthalpies for interdiffusion were calculated using the temperature dependence of the interdiffusion coefficients. The study for the first time compiles comprehensively the previous results regarding the phase diagrams of the two material systems since 1923.
More details
Series
Language
English
Place of publication
Wiesbaden
Germany
Publishing group
Springer Fachmedien Wiesbaden GmbH
Target group
Professional and scholarly
Illustrations
XXIV, 102 p. 20 illus.
File size
2,82 MB
ISBN-13
978-3-658-08793-7 (9783658087937)
DOI
10.1007/978-3-658-08793-7
Schweitzer Classification
Other editions
Additional editions
Christian Rockenhäuser
Electron Microscopical Investigation of Interdiffusion and Phase Formation at Gd2O3/CeO2- and Sm2O3/CeO2-Interfaces
Book
03/2015
Springer
€53.49
Shipment within 10-15 days
Person
Christian Rockenhäuser studied Physics at the Karlsruhe Institute of Technology (KIT) and the Heriot-Watt University (UK). He investigated solid electrolytes at the Laboratory for Electron Microscopy (KIT) and then joined the Federal Institute for Materials Research and Testing.
Content
Introduction.- Fundamentals.- Experimental Techniques and Instrumentation.- The Gd(x)Ce(1-x)O(2-x/2) System: Phase Formation and Cation Interdiffusion.- The Sm(x)Ce(1-x)O(2-x/2) System: Phase Formation and Cation Interdiffusion.- Summary.
