Journal ArticleDOI
CXXXVIII. Concentration contours in grain boundary diffusion
TLDR
In this article, a simplified model for studying grain boundary diffusion of one metal into another was proposed, which has obvious application to the study of heat flow in a poorly conducting solid with a metallic fin.Abstract:
Formulae are obtained for the concentration in a poorly diffusing half space bisected by a thin well-diffusing slab, at different times after the edge of the half-space has been suddenly raised from zero to unit concentration. This represents a simplified model for studying ‘grain boundary’ diffusion of one metal into another. The problem also has obvious application to the study of heat flow in a poorly conducting solid with a metallic fin.read more
Citations
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Mixed ionic-electronic conducting (MIEC) ceramic-based membranes for oxygen separation
Jaka Sunarso,Stefan Baumann,José M. Serra,Wilhelm A. Meulenberg,Shaomin Liu,Y.S. Lin,J. C. Diniz da Costa +6 more
TL;DR: In the last 30 years, research efforts by the scientific community intensified significantly, stemming from the pioneering work of Takahashi and co-workers, with the initial development of mixed ionic-electronic conducting (MIEC) oxides.
Journal ArticleDOI
The analysis of grain boundary diffusion measurements
TL;DR: In this article, the exact solution of the grain boundary diffusion problem is evaluated numerically and the results presented in graphical form suitable for immediate application to the commoner types of experimental measurement of D?, the grain surface diffusion coefficient.
Journal ArticleDOI
Diffusion in nanocrystalline material
TL;DR: In this paper, the self-diffusion of the radioisotope 67Cu in nanocrystalline copper has been measured by serial sectioning with the aid of ion-beam sputtering.
Journal ArticleDOI
Exact Solutions of Two Ideal Cases in Grain Boundary Diffusion Problem and the Application to Sectioning Method
TL;DR: In this article, exact solutions of grain boundary diffusion based on the two mathematical conditions assumed for the surface source are discussed for the purpose of application to the experiments by means of sectioning method.
References
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Journal ArticleDOI
Calculation of Diffusion Penetration Curves for Surface and Grain Boundary Diffusion
TL;DR: In this paper, a mathematical analysis of grain boundary and surface diffusion is completed, assuming that grain boundary diffusion is analogous to the diffusion of heat along a thin copper foil imbedded in cork.
Journal ArticleDOI
Diffusion of Copper along the Grain Boundaries of Nickel
TL;DR: In this article, it was shown that copper diffuses preferentially along the grain boundaries of nickel and showed that the grain-boundary diffusion of thorium in tungsten may be a hundred times faster than through the grain itself.