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 and Materials Transactions a-Physical Metallurgy and Materials Science. Springer. doi: 10.1007/s11661-016-3886-8. ISSN 1073-5623.

Dies ist die aktuellste Version dieses Eintrags.

PDF
3MB

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/110065/

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 and Materials Transactions a-Physical Metallurgy and Materials Science

Referierte Publikation:

Open Access:

Gold Open Access:

Nein

In SCOPUS:

In ISI Web of Science:

DOI:

10.1007/s11661-016-3886-8

Verlag:

Springer

ISSN:

1073-5623

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:

02 Jan 2017 07:13

Letzte Änderung:

03 Nov 2023 07:26

Verfügbare Versionen dieses Eintrags

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

Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags