Surface tension of liquid metals and alloys — Recent developments

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“…According to model given in [16], it is assumed that partial surface excess Gibbs energy is related to that of the bulk phase by…”

Section: Thermodynamic Calculation Of the Cu-ni Nanoalloy Phase Diagrammentioning

confidence: 99%

Cu–Ni nanoalloy phase diagram – Prediction and experiment

Sopoušek

Vřešťál

Pinkas

et al. 2014

Calphad

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“…The major advantage of this technique is the assurance of measurements free of contaminants from a container at high temperatures that are sufficiently above the melting point and under deeply undercooled conditions. 17) This is attributed to the sample not being in contact with the container, which is chemically reactive with the sample at high temperatures and plays a role in the nucleation center below the melting point. This technique also assures atmosphere control during the measurement of surface tension.…”

Section: Introductionmentioning

confidence: 99%

Influence of Oxygen Partial Pressure on Surface Tension of Molten Type 304 and 316 Stainless Steels Measured by Oscillating Droplet Method Using Electromagnetic Levitation

2014

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Surface tension of molten SUS304 and SUS316 stainless steels was measured by an oscillating droplet method using electromagnetic levitation furnace to investigate the influence of oxygen partial pressure, , of atmosphere on surface tension and its temperature coefficient. We successfully measured the surface tension of molten stainless steels over a wide temperature range including an undercooling condition under Ar-He-5 vol.%H2 and Ar-He mixed gases. Although the surface tension of molten SUS304 stainless steel decreased with increasing temperature under the Ar-He-5 vol.%H2 mixed gas, the surface tension showed a boomerang temperature dependence when was fixed at 10 -2 Pa under the Ar-He mixed gas; and surface tension increased and then decreased with increasing temperature. When the surface tension of molten SUS316 stainless steel was measured under the Ar-He-5 vol.%H2 and Ar-He mixed gases, the surface tension increased with increasing temperature regardless of the atmospheric gas due to the large sulfur content. The uncertainty of the measurement was evaluated as less than 5% in this study.

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“…Moreover, and in contrast to container-based techniques, the free surface is the only interface in the system. 14) In this paper, we show the results of surface tension measurement performed on Ag-Cu alloy melts using electromagnetic levitation as a containerless technique. These were obtained and discussed as functions of temperature and alloy composition.…”

Section: Introductionmentioning

confidence: 99%

Surface Tension of Liquid Ag–Cu Binary Alloys

et al. 2014

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Surface tension of liquid Ag-Cu binary alloys has been measured contactlessly using the technique of electromagnetic levitation in combination with the oscillating drop technique. The measurements were performed at temperatures above the melting point of alloys. The surface tension values were obtained from an analysis of the frequency spectra of droplet oscillations recorded with a CMOS-camera at 400 fps.The alloy samples covered the entire composition range. The surface tension data can be described by linear functions of temperature with negative slopes. The new experimental data were compared to the corresponding theoretical values calculated combining the Butler equation with the ideal and subregular solution models, respectively. The agreement with the experimentally obtained data is excellent for the isothermal surface tension and quite reasonable for their temperature coefficients.

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Surface tension of liquid metals and alloys — Recent developments

Cited by 231 publications

References 103 publications

Cu–Ni nanoalloy phase diagram – Prediction and experiment

Cu–Ni nanoalloy phase diagram – Prediction and experiment

Influence of Oxygen Partial Pressure on Surface Tension of Molten Type 304 and 316 Stainless Steels Measured by Oscillating Droplet Method Using Electromagnetic Levitation

Surface Tension of Liquid Ag–Cu Binary Alloys

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