Density, Molar Volume, and Surface Tension of liquid Al-Ti

Wessing, Johanna Jeanette und Brillo, Jürgen (2016) Density, Molar Volume, and Surface Tension of liquid Al-Ti. Metallurgical Transactions A (Physical Metallurgy and Materials Science). American Society of Mechanical Engineers (ASME). doi: 10.1007/s11661-016-3886-8. ISSN 0360-2133.

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Offizielle URL: http://link.springer.com/article/10.1007/s11661-016-3886-8

Kurzfassung

Al-Ti-based alloys are of enormous technical relevance due to their specific properties. For studies in atomic dynamics, surface physics and industrial processing the precise knowledge of the thermophysical properties of the liquid phase is crucial. In the present work, we systematically measure mass density, \rho (g/cm^3), and the surface tension, \gamma (N/m), as functions of temperature, T, and compositions of binary Al-Ti melts. Electromagnetic Levitation in combination with the optical dilatometry method is used for density measurements and the oscillating drop method for surface tension measurements. It is found that, for all compositions, density and surface tension increase linearly upon decreasing temperature in the liquid phase. Within the Al-Ti system, we find the largest values for pure titanium and the smallest for pure aluminum, which amount to \rho (TL,Ti) = 4.12 ± 0.04 g/ cm^3 and \gamma (TL,Ti) = 1.56 ± 0.02 N/m; and \rho (TL,Al) = 2.09 ± 0.01 g/cm^3 and \gamma (TL,Al) = 0.87 ± 0.06 N/m, respectively. The data are analyzed concerning the temperature coefficients, \rho T and \gamma T, excess molar volume, VE, excess surface tension, \gamma E, and surface segregation of the surface active component, Al. The results are compared with thermodynamic models. Generally, it is found that Al-Ti is a highly nonideal system.

elib-URL des Eintrags:

https://elib.dlr.de/109441/

Dokumentart:

Zeitschriftenbeitrag

Titel:

Density, Molar Volume, and Surface Tension of liquid Al-Ti

Autoren:

Autoren	Institution oder E-Mail-Adresse	Autoren-ORCID-iD	ORCID Put Code
Wessing, Johanna Jeanette	Johanna.Wessing (at) dlr.de	NICHT SPEZIFIZIERT	NICHT SPEZIFIZIERT
Brillo, Jürgen	Juergen.Brillo (at) dlr.de	NICHT SPEZIFIZIERT	NICHT SPEZIFIZIERT

Datum:

11 Dezember 2016

Erschienen in:

Metallurgical Transactions A (Physical Metallurgy and Materials Science)

Referierte Publikation:

Open Access:

Nein

Gold Open Access:

Nein

In SCOPUS:

Nein

In ISI Web of Science:

Nein

DOI:

10.1007/s11661-016-3886-8

Verlag:

American Society of Mechanical Engineers (ASME)

Name der Reihe:

Metallurgical and Materials Transactions A, (), 1-15

ISSN:

0360-2133

Status:

veröffentlicht

Stichwörter:

Al, Ti, surface tension, density, excess molar Volume, excess surface Tension, surface Segregation, Butler model, Chatain model

HGF - Forschungsbereich:

Luftfahrt, Raumfahrt und Verkehr

HGF - Programm:

Raumfahrt

HGF - Programmthema:

Forschung unter Weltraumbedingungen

DLR - Schwerpunkt:

Raumfahrt

DLR - Forschungsgebiet:

R FR - Forschung unter Weltraumbedingungen

DLR - Teilgebiet (Projekt, Vorhaben):

R - Materialforschung und Mikrogravitation (MuM)

Standort:

Köln-Porz

Institute & Einrichtungen:

Institut für Materialphysik im Weltraum

Hinterlegt von:

Wessing, Johanna

Hinterlegt am:

14 Dez 2016 11:35

Letzte Änderung:

19 Nov 2021 20:25

Verfügbare Versionen dieses Eintrags

Density, Molar Volume, and Surface Tension of liquid Al-Ti. (deposited 14 Dez 2016 11:35) [Gegenwärtig angezeigt]
- Density, Molar Volume, and Surface Tension of liquid Al-Ti. (deposited 02 Jan 2017 07:13)
  - Density, Molar Volume, and Surface Tension of liquid Al-Ti. (deposited 02 Jan 2017 07:13)

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