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Written by an outstanding group of applied theoreticians with comprehensive expertise and a wide spectrum of international contacts headed by Prof. A. M. Gusak, this monograph coherently presents the approaches and results hitherto only available in various journal papers. A must-have for all those involved with the public or corporate science of nano systems, thin films and electrical engineering.
The current work analyzes degradation effects in solid-oxide fuel cell anodes with the phase-field method. A model extension for interface diffusion is formulated and calibrated. Large-scale 3D-simulations provide interesting insights into phenomena at the microscale which are responsible for the degradation
The topic of diffusion science becomes more and more important: this collection of timely papers is divided into seven chapters. The first three are dedicated to macroscopic and microscopic theories of diffusion.
This book covers, on close to 2000 pages, all aspects of basic and applied diffusion research in all important engineering materials, including metals and intermetallics, elemental and compound semiconductors, amorphous and nanocrystalline materials and oxides.
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In dieser Arbeit wurden Thermal Grooving Experimente an Anodenmikrostrukturen, Ni-Polykristallen sowie Ni-Bikristallen durchgeführt und die Korngrenzfurchen mittels eines AFM vermessen. Die Ergebnisse liefern erstmals zuverlässige Werte sowie die komplette Anisotropie der relevanten Materialparameter – der relativen Korngrenzenergien und der Oberflächendiffusionskoeffizienten – von Nickel unter realitätsnahen Betriebsbedingungen einer SOFC-Anode. - In this work, thermal grooving experiments were performed on anode microstructures, Ni polycrystals and Ni bicrystals. The grain boundary grooves were measured by means of an AFM. The results provide for the first time reliable values as well as the complete anisotropy of the relevant material parameters - the relative grain boundary energies and the surface diffusion coefficients - of nickel under realistic operating conditions of an SOFC anode.