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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. American Institute of Physics (AIP). doi: 10.1063/1.3427256.

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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.

Item URL in elib:https://elib.dlr.de/64516/
Document Type:Article
Title:Note: X-ray radiography for mesuring chemical diffusion in metellic melts
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Griesche, A. UNSPECIFIEDUNSPECIFIED
Zhang, B.bo.zhang (at) dlr.deUNSPECIFIED
Solórzano, E.UNSPECIFIEDUNSPECIFIED
Garcia-Moreno, F.UNSPECIFIEDUNSPECIFIED
Date:25 May 2010
Journal or Publication Title:Review of Scientific Instruments
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:81
DOI :10.1063/1.3427256
Page Range:056104-1-56104-2
Publisher:American Institute of Physics (AIP)
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: Parpart, Ingeborg
Deposited On:30 Jun 2010 10:44
Last Modified:06 Sep 2019 15:29

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