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Note: X-ray radiography for mesuring chemical diffusion in metellic melts

Griesche, A. and Zhang, B. and Solórzano, E. and Garcia-Moreno, F. (2010) Note: X-ray radiography for mesuring chemical diffusion in metellic melts. Review of Scientific Instruments, 81, 056104-1-56104-2. DOI: 10.1063/1.3427256.

Full text not available from this repository.

Abstract

A x-ray radioscopy technique for measuring in situ chemical diffusion coefficients in metallic melts is presented. The long-capillary diffusion measurement method is combined with imaging techniques using microfocus tubes and flat panel detectors in order to visualize and quantitatively analyze diffusive mixing of two melts of different chemical composition. The interdiffusion coefficient as function of temperature and time is obtained by applying Fick’s diffusion laws. Tracking the time dependence of the mean square penetration depth of the mixing process allows to detect changes in the mass transport caused by convective flow. The possibility to sort out convective mass transport contributions from analysis enhances significantly the accuracy compared to the conventional long-capillary diffusion measurement method with postmortem analysis. The performance of this novel diffusion measurement method with x-ray radiography technique is demonstrated by a diffusion experiment in an Al–Ni melt.

Document Type:Article
Title:Note: X-ray radiography for mesuring chemical diffusion in metellic melts
Authors:
AuthorsInstitution or Email of Authors
Griesche, A. UNSPECIFIED
Zhang, B.bo.zhang@dlr.de
Solórzano, E.UNSPECIFIED
Garcia-Moreno, F.UNSPECIFIED
Date:25 May 2010
Journal or Publication Title:Review of Scientific Instruments
Refereed publication:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:81
DOI:10.1063/1.3427256
Page Range:056104-1-56104-2
Status:Published
Keywords:X-ray radiography, chemical diffusion
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W FR - Forschung unter Weltraumbedingungen (old)
DLR - Research area:Space
DLR - Program:W FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):W - Vorhaben Materialwissenschaftliche Forschung (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space
Deposited By: Ingeborg Parpart
Deposited On:30 Jun 2010 10:44
Last Modified:26 Mar 2013 13:18

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