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

Wessing, Johanna Jeanette and 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.

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

Abstract

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.

Item URL in elib:

https://elib.dlr.de/110065/

Document Type:

Article

Title:

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

Authors:

Authors	Institution or Email of Authors	Author's ORCID iD	ORCID Put Code
Wessing, Johanna Jeanette	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Brillo, Jürgen	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED

Date:

11 December 2016

Journal or Publication Title:

Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science

Refereed publication:

Yes

Open Access:

Yes

Gold Open Access:

In SCOPUS:

Yes

In ISI Web of Science:

Yes

DOI:

10.1007/s11661-016-3886-8

Publisher:

Springer

ISSN:

1073-5623

Status:

Published

Keywords:

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

HGF - Research field:

Aeronautics, Space and Transport

HGF - Program:

Space

HGF - Program Themes:

Research under Space Conditions

DLR - Research area:

Raumfahrt

DLR - Program:

R FR - Research under Space Conditions

DLR - Research theme (Project):

R - Materials Research and Microgravity (MuM)

Location:

Köln-Porz

Institutes and Institutions:

Institute of Materials Physics in Space

Deposited By:

Wessing, Johanna

Deposited On:

02 Jan 2017 07:13

Last Modified:

03 Nov 2023 07:26

Available Versions of this Item

Density, Molar Volume, and Surface Tension of liquid Al-Ti. (deposited 14 Dec 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) [Currently Displayed]

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