Abstract
The effect of the droplet size on the accuracy of surface tension measurement by the sessile drop method is discussed for liquid metals through a simulation by using the Laplace equation. It is found that with increasing size of the droplet, a higher accuracy of the measured value of the surface tension can be obtained. In order to make a large droplet of liquid metals, the constrained drop method with a special crucible shape was applied to measure the surface tension of liquid Ga, Sn, Bi, In, and Pb. The uncertainty of the measured surface tension was within 1%. The temperature dependences of the surface tension of liquid Ga, Sn, Bi, In, and Pb were obtained in the present experiment as follows:
Ga: σGa = 737 − 0.062T mN/m (823 ≤ T ≤ 993K)
Sn: σSn = 579 − 0.066T mN/m (723 ≤ T ≤ 993K)
Bi: σBi = 417 − 0.070T mN/m (773 ≤ T ≤ 873K)
In: σIn = 600 − 0.082T mN/m (673 ≤ T ≤ 993K)
Pb: σPb = 499 − 0.089T mN/m (757 ≤ T ≤ 907K)
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© 2004 Carl Hanser Verlag, München
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Articles in the same Issue
- Frontmatter
- Editorial
- Editorial
- 85 Years DGM
- Fachausschuss ,,Materialographie“
- Fachausschuss ,,Mechanische Oberflächenbehandlungen“
- Fachausschuss „Titan“
- Fachausschuss ,,Gefüge und Eigenschaften von Polymerwerkstoffen“
- Characterization of the fcc/bcc orientation relationship by EBSD using pole figures and variants
- Microstructural and thermodynamic study of γ-Ga2O3
- Spray forming of 2014-Al alloy based composites with injection of SiC particulates
- Size effects in the plastic deformation of NiAl thin films
- Fracture parameters of chevron-notched Al2O3/Nb sandwich specimens
- HVEM in situ study of fracture of Al2O3/Nb sandwich specimens
- Articles Basic
- Assessment of thermodynamic functions in the MgO–Al2O3–SiO2 system
- Derivation and consistency of the partial functions of a ternary system involving interaction coefficients
- Contribution to the zinc-rich side of the Ti–Zn system
- Measurement of the surface tension of liquid Ga, Bi, Sn, In and Pb by the constrained drop method
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- Einfluss von Molybdän auf die Beständigkeit von Stahlanoden zum Verchromen in „Chromispel-C“-Elektrolyten
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- Notifications/Mitteilungen
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- News/Aktuelles
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