Some theoretical considerations of the surface tension of liquid metals for metal matrix composites

Schoutens, Jacques E.

doi:10.1007/bf02385611

Cited by 25 publications

(4 citation statements)

References 15 publications

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“…They observed that Ti not only improves wetting, but alloying with Cu in the range of 14-47 wt% will result in more than 100 • C of reduction in the melting point of the Cu-rich phase. At higher temperature (1000 • C) the wetting decreases slightly increasing the copper content, which can be related to the increases in the viscosity and the surface tension of the alloy [16], and the gradient of temperature has minor effect. This could be related to at higher temperature the solidus line is far, compare to the lower temperature and the gradient of temperature does not have great effect.…”

Section: Wetting and Spreading Kineticmentioning

confidence: 96%

Wetting of TiC by Al–Cu alloys and interfacial characterization

Contreras

2007

Journal of Colloid and Interface Science

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Section: Wetting and Spreading Kineticmentioning

confidence: 96%

Wetting of TiC by Al–Cu alloys and interfacial characterization

Contreras

2007

Journal of Colloid and Interface Science

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“…Eyring has shown that this approach can predict the thermodynamic properties of numerous liquids and pure liquid metals. The Eyring's approach in calculating the surface tension of a liquid metal was made by Schoutens, [12] who calculated the surface tension of pure liquid Al. He assumed that the probability of diatomic modules is extremely small, and as a consequence, the partition function for rotation is unity.…”

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confidence: 99%

Theoretical Calculations of the Surface Tension of Liquid Transition Metals

Aqra

Ayyad

2010

Metall Mater Trans B

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The surface tension of pure liquid mercury in the temperature range 273 K to 523 K (0°C to 250 C°) was calculated using our previously reported equation. The results were compared with the experimental data and showed a good agreement. The surface tension of mercury decreases linearly with temperature, confirming a negative slope, and therefore shows the usual linear temperature dependence. The calculated surface excess entropy (0.21) is in excellent consistence with the experimental value (0.22). The surface tension also was calculated for many d-block metals (Ti, Zr, Fe, Co, Ni, Cu, Zn, Cd, Ag, Au, Pd, and Pt) at their melting points. The calculated values were compared with the existing experimental data.Interfacial and surface properties of condensed matter phases are important from both fundamental and technological points of view. [1] Studies on surface properties and their relation to macro and microscopic phenomena have been done. [2][3][4][5][6] The surface energy and the work functions are the two most fundamental electronic properties of a metallic surface, and their determination is of great importance in the understanding of a wide range of surface phenomena. These two quantities can be calculated from the surface tension of liquid metals. [7] Based on the present experience, it may be argued that, for properties as difficult to assess experimentally as surface properties, theoretical calculations have reached a stage in which they may form the most consistent basis for a physical description of surface phenomena. The surface tension of liquid metals is an essential thermophysical property relating strongly to various phenomena associated with liquid metal processing operations. Many materials technologies are influenced by the surface tension of a liquid metal. In the field of process science, accurate and reliable data on the surface tension of all liquid metals are required.The model of the surface tension of liquid metals must be accurate and universal.We recently have derived a theoretical equation for the calculation of surface tension of pure liquid metals, which was applied for pure liquid Ga. [8] In continuation to this work, it was considered worthwhile to increase the success of our equation by applying it to other liquid metals. Therefore, this article describes a theoretical calculation of the surface tension of pure liquid mercury as a function of temperature. In addition, the manuscript reports the calculation of the surface tension of various d-block metals at their melting points, such as Ti, Zr, Fe, Co, Ni, Cu, Zn, Cd, Ag, Au, Pd, and Pt. The obtained theoretical values are strictly compared with the experimental reported data.The theoretical consideration, here, is based on classical statistical thermodynamics formulation of Eyring and coworkers. [9][10][11] Their theory is focused on the assumption that the metal after melting acquires vacancies that are moving freely through the melt and that short-range order exists in the liquid. [9][10][11] The thermodynamic properties of th...

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“…Eyring has shown that this approach can predict the thermodynamic properties of a large number of liquids and pure liquid metals. The Eyring's approach in calculating the surface tension of a liquid metal was made by Schoutens [21], who calculated the surface tension of pure liquid Al.…”

Section: Theory and Modelmentioning

confidence: 99%

Theoretical Study of a Thermophysical Property of Molten Semiconductors

Aqra

Ayyad

2011

Journal of Metallurgy

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This paper deals with theoretical approach to surface tension of molten silicon and germanium, and contributes to this field, which is very important. A theoretical calculation for determining the surface tension of high-temperature semiconductor melts, such as molten silicon and germanium, in the temperature range 1687-1825 K and 1211-1400 K, respectively, is described. The calculated temperature-dependence surface tension data for both Si and Ge are expressed as γ = 876 − 0.32 (T − T m ) and γ = 571 − 0.074 (T − T m ) (mJ m −2 ), respectively. These values are in consistence with the reported experimental data (720-875 for Si and 560-632 mJ m −2 for Ge). The calculated surface tension for both elements decreases linearly with temperature.

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Some theoretical considerations of the surface tension of liquid metals for metal matrix composites

Cited by 25 publications

References 15 publications

Wetting of TiC by Al–Cu alloys and interfacial characterization

Wetting of TiC by Al–Cu alloys and interfacial characterization

Theoretical Calculations of the Surface Tension of Liquid Transition Metals

Theoretical Study of a Thermophysical Property of Molten Semiconductors

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