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Diffusion in Solid Metals and Alloys / Diffusion in festen Metallen und Legierungen

Diffusion in Solid Metals and Alloys / Diffusion in festen Metallen und Legierungen
Author: H. Bakker
Publisher: Springer
Total Pages: 0
Release: 1990-12-19
Genre: Science
ISBN: 9783540508861

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The interest in diffusion in solids is as old as physical metallurgy or materials science. It stems from application-oriented as well as from scientific reasons. First, a knowledge of diffusion is basic to an understanding of many microstructural changes that occur in solid matter at elevated temperatures. For processes like phase transformations, precipitation or dissolution of a second phase, recrystallization, oxidation, creep, annealing etc., solid state diffusion is fundamental and ubiquitous. The second reason for studying diffusion is to learn more about how atoms move in solid matter. Volume III/26 presents for the first time a comprehensive collection of diffusion data for solid metals and alloys. The critical compilation of data has resulted in tables and series of diagrams which show in 13 chapters data for the following properties: Self- and impurity-diffusion in metallic elements, self-diffusion in homogeneous binary alloys, chemical diffusion in binary and ternary alloys, diffusion in amorphous alloys, diffusion of interstitial foreign atoms like hydrogen, carbon, oxygen and nitrogen in metallic elements, mass and pressure dependence of diffusion, diffusion along dislocations, grain and interphase boundary diffusion, and diffusion on surfaces.


An Interferometric Method of Determining Diffusion Coefficients in Gaseous Systems

An Interferometric Method of Determining Diffusion Coefficients in Gaseous Systems
Author: Charles A. Boyd
Publisher:
Total Pages: 17
Release: 1950
Genre: Diffusion
ISBN:

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This report describes a new type of experimental method for accurately measuring diffusion coefficients in gaseous systems. The change of composition in the diffusion cell is followed by measuring the change in refractive index with an interferometer. Results obtained using this method compare favorably with some values reported in the earlier literature. In addition, values are reported for new systems not studied previously. A comparison is made between measured values nd those calculated from viscosity data.


A Determination of Diffusion Coefficients for Gaseous Systems at Various Temperatures

A Determination of Diffusion Coefficients for Gaseous Systems at Various Temperatures
Author: Roger A. Strehlow
Publisher:
Total Pages: 262
Release: 1950
Genre: Diffusion
ISBN:

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The transport property which is most fundamentally related to forces between unlike molecules is the ordinary diffusion due to concentration gradients. Unfortunately, this property and its dependence upon temperature have not been systematically studied experimentally, with the result that the literature does not contain the data necessary to obtain good force constants for the introduction of unlike molecuels. The present work describes an experimental method for determining diffusion coefficients, based on the variation of thermal conductivity with composition in binary mixtures which is capable of being used over a wide range of temperature. Experimental results for the systems n-butane-hydrogen, sulfur hexafluoride-hydrogen, argon-hydrogen, and argon-helium are given for a temperature range from 10°C. to 140°C.