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Electron Microscopical Investigation of Interdiffusion and Phase Formation at Gd2O3/CeO2- and Sm2O3/CeO2-Interfaces

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Electron Microscopical Investigation of Interdiffusion and Phase Formation at Gd2O3/CeO2- and Sm2O3/CeO2-Interfaces/ by Christian Rockenhäuser.
Author:	Rockenhäuser, Christian.
Description:	XXIV, 102 p. 20 illus.online resource. :
Contained By:	Springer Nature eBook
Subject:	Physical chemistry. -
Online resource:	https://doi.org/10.1007/978-3-658-08793-7
ISBN:	9783658087937

Electron Microscopical Investigation of Interdiffusion and Phase Formation at Gd2O3/CeO2- and Sm2O3/CeO2-Interfaces
Rockenhäuser, Christian.

Electron Microscopical Investigation of Interdiffusion and Phase Formation at Gd2O3/CeO2- and Sm2O3/CeO2-Interfaces[electronic resource] /by Christian Rockenhäuser. - 1st ed. 2015. - XXIV, 102 p. 20 illus.online resource. - MatWerk,2522-0756. - MatWerk,.

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. .

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.

ISBN: 9783658087937

Standard No.: 10.1007/978-3-658-08793-7doiSubjects--Topical Terms:

1148725
Physical chemistry.

LC Class. No.: QD450-882

Dewey Class. No.: 541

Electron Microscopical Investigation of Interdiffusion and Phase Formation at Gd2O3/CeO2- and Sm2O3/CeO2-Interfaces
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520 $a 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.
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