New Analyzing Approaches for In Situ Interdiffusion Experiments to Determine Concentration-Dependent Diffusion Coefficients in Liquid Al–Au

Interdiffusion coefficients are key parameters for the solidification process of liquid alloys. However, the determination of interdiffusion coefficients in liquid metals at high temperatures is a challenging and extensive task, due to a variety of potential systematic errors. In recent years we hav...

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Autores principales:	Toni Schiller, Elke Sondermann, Andreas Meyer
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	interdiffusion chemical diffusion binary alloys analysis in situ shear cell Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/535e8ffaac1a4832923022f9362b157a
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spelling	oai:doaj.org-article:535e8ffaac1a4832923022f9362b157a2021-11-25T18:21:49ZNew Analyzing Approaches for In Situ Interdiffusion Experiments to Determine Concentration-Dependent Diffusion Coefficients in Liquid Al–Au10.3390/met111117722075-4701https://doaj.org/article/535e8ffaac1a4832923022f9362b157a2021-11-01T00:00:00Zhttps://www.mdpi.com/2075-4701/11/11/1772https://doaj.org/toc/2075-4701Interdiffusion coefficients are key parameters for the solidification process of liquid alloys. However, the determination of interdiffusion coefficients in liquid metals at high temperatures is a challenging and extensive task, due to a variety of potential systematic errors. In recent years we have developed an X-ray in situ shear cell method for the measurement of interdiffusion coefficients in binary metallic melts. This technique enables the monitoring of the experiment in order to exclude fatal errors. Utilizing X-ray contrast, the method also provides a time-resolved concentration distribution. Such an in situ data set contains significantly more information than ex situ evaluated experiments. Available analyzing strategies do not fully exploit this potential yet. We present three new analyzing approaches that are able to retrieve a concentration-dependent interdiffusion coefficient from only one in situ data set. In that way, larger concentration differences become accessible for an experiment, which considerably decreases efforts. Using simulations, the approaches are checked for robustness. Furthermore, the approaches are run on real in situ data from a binary (0 to 9 at% Au-content) Al–Au alloy at 1000 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mo>°</mo></msup></semantics></math></inline-formula>C which results in a concentration-dependent interdiffusion coefficient within the measured concentration range.Toni SchillerElke SondermannAndreas MeyerMDPI AGarticleinterdiffusionchemical diffusionbinary alloysanalysisin situshear cellMining engineering. MetallurgyTN1-997ENMetals, Vol 11, Iss 1772, p 1772 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	interdiffusion chemical diffusion binary alloys analysis in situ shear cell Mining engineering. Metallurgy TN1-997
spellingShingle	interdiffusion chemical diffusion binary alloys analysis in situ shear cell Mining engineering. Metallurgy TN1-997 Toni Schiller Elke Sondermann Andreas Meyer New Analyzing Approaches for In Situ Interdiffusion Experiments to Determine Concentration-Dependent Diffusion Coefficients in Liquid Al–Au
description	Interdiffusion coefficients are key parameters for the solidification process of liquid alloys. However, the determination of interdiffusion coefficients in liquid metals at high temperatures is a challenging and extensive task, due to a variety of potential systematic errors. In recent years we have developed an X-ray in situ shear cell method for the measurement of interdiffusion coefficients in binary metallic melts. This technique enables the monitoring of the experiment in order to exclude fatal errors. Utilizing X-ray contrast, the method also provides a time-resolved concentration distribution. Such an in situ data set contains significantly more information than ex situ evaluated experiments. Available analyzing strategies do not fully exploit this potential yet. We present three new analyzing approaches that are able to retrieve a concentration-dependent interdiffusion coefficient from only one in situ data set. In that way, larger concentration differences become accessible for an experiment, which considerably decreases efforts. Using simulations, the approaches are checked for robustness. Furthermore, the approaches are run on real in situ data from a binary (0 to 9 at% Au-content) Al–Au alloy at 1000 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mo>°</mo></msup></semantics></math></inline-formula>C which results in a concentration-dependent interdiffusion coefficient within the measured concentration range.
format	article
author	Toni Schiller Elke Sondermann Andreas Meyer
author_facet	Toni Schiller Elke Sondermann Andreas Meyer
author_sort	Toni Schiller
title	New Analyzing Approaches for In Situ Interdiffusion Experiments to Determine Concentration-Dependent Diffusion Coefficients in Liquid Al–Au
title_short	New Analyzing Approaches for In Situ Interdiffusion Experiments to Determine Concentration-Dependent Diffusion Coefficients in Liquid Al–Au
title_full	New Analyzing Approaches for In Situ Interdiffusion Experiments to Determine Concentration-Dependent Diffusion Coefficients in Liquid Al–Au
title_fullStr	New Analyzing Approaches for In Situ Interdiffusion Experiments to Determine Concentration-Dependent Diffusion Coefficients in Liquid Al–Au
title_full_unstemmed	New Analyzing Approaches for In Situ Interdiffusion Experiments to Determine Concentration-Dependent Diffusion Coefficients in Liquid Al–Au
title_sort	new analyzing approaches for in situ interdiffusion experiments to determine concentration-dependent diffusion coefficients in liquid al–au
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/535e8ffaac1a4832923022f9362b157a
work_keys_str_mv	AT tonischiller newanalyzingapproachesforinsituinterdiffusionexperimentstodetermineconcentrationdependentdiffusioncoefficientsinliquidalau AT elkesondermann newanalyzingapproachesforinsituinterdiffusionexperimentstodetermineconcentrationdependentdiffusioncoefficientsinliquidalau AT andreasmeyer newanalyzingapproachesforinsituinterdiffusionexperimentstodetermineconcentrationdependentdiffusioncoefficientsinliquidalau
_version_	1718411256887508992

New Analyzing Approaches for In Situ Interdiffusion Experiments to Determine Concentration-Dependent Diffusion Coefficients in Liquid Al–Au

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