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- W2000765352 abstract "A theory of grain boundary grooving is presented in which the matter transport occurs by the concomitant action of surface diffusion, volume diffusion and evaporation-condensation mechanisms. The groove profiles have been predicted in terms of a dimensionless parameter,p, which measures the relative importance of the surface and volume diffusion mechanisms. It is shown that the matching of the present theory with the experimental data on grain boundary grooving enables one to obtain simultaneously both the surface and volume diffusion coefficients. The theoretical results are compared with the experimental data on a copper (100) surface. Les auteurs présentent une théorie pour la formation des rainures aux joints de grains, dans laquelle le transport de matière résulte de l'action simultanée des mécanismes de diffusion superficielle, de diffusion en volume et de condensation-evaporation. Les profils des rainures ont été prévus à l'aide d'un paramètre sans dimension, p, mesurant l'importance relative des mécanismes de diffusion superficielle et de diffusion en volume. Les auteurs montrent que, pour que cette théorie soit en accord avec les résultats expérimentaux, il est nécessaire d'obtenir simultanément les coefficients de diffusion superficielle et ceux de diffusion en volume. Les résultats théoriques sont comparés aux résultats expérimentaux sur une surface (100) de cuivre. Es wird eine Theorie der Korngrenzenriefung vorgelegt, bei der der Materietransport durch die gemeinsame Aktion der Oberflächendiffusions-, Volumendiffusions- und Verdampfungs-Kondensationsmechanismen beschrieben wird. Die Rillenprofile werden anhand eines dimensionslosen Parameters p vorhergesagt, der die relative Bedeutung der Oberflächen- und Volumendiffusionsmechanismen beschreibt. Es wird gezeigt, daβ es durch die Anpassung der vorliegenden Theorie an experimentelle Daten der Komgrenzenriefung möglich ist, gleichzeitig sowohl die Oberflächen- als auch die Volumendiffusionskoeffizienten zu gewinnen. Die theoretischen Ergebnisse werden mit den experimentellen Daten an einer (l00)-Kupferoberfläche verglichen." @default.
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- W2000765352 date "1973-05-01" @default.
- W2000765352 modified "2023-10-18" @default.
- W2000765352 title "Theory of grain boundary grooving under the combined action of the surface and volume diffusion mechanisms" @default.
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- W2000765352 doi "https://doi.org/10.1016/0001-6160(73)90070-9" @default.
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