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  • Open Daily: 10am - 10pm
    Alley-side Pickup: 10am - 7pm

    3038 Hennepin Ave Minneapolis, MN
    612-822-4611

Open Daily: 10am - 10pm | Alley-side Pickup: 10am - 7pm
3038 Hennepin Ave Minneapolis, MN
612-822-4611
Electron Microscopical Investigation of Interdiffusion and Phase Formation at Gd2o3/Ceo2- And Sm2o3/Ceo2-Interfaces

Electron Microscopical Investigation of Interdiffusion and Phase Formation at Gd2o3/Ceo2- And Sm2o3/Ceo2-Interfaces

Rockenhäuser, Christian

Paperback

Series: Matwerk

Technology & EngineeringChemistryPhysics

ISBN10: 3658087927
ISBN13: 9783658087920
Publisher: Springer
Published: Mar 24 2015
Pages: 102
Weight: 0.39
Height: 0.30 Width: 5.83 Depth: 8.27
Language: English
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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