Experimental verification of anomalous surface tension temperature dependence at the interface between coexisting liquid-gas phases in magnetic and Stockmayer fluids

2019 ◽  
Vol 31 (5) ◽  
pp. 052001
Author(s):  
Aleksey S. Ivanov
Keyword(s):  
Surface Tension ◽  
Temperature Dependence ◽  
Experimental Verification ◽  
Gas Phases ◽  
Anomalous Surface

scholarly journals Surface Tension and Density of Liquid Hot Work Tool Steel W360 by voestalpine BÖHLER Edelstahl GmbH & Co KG Measured with an Electromagnetic Levitation Apparatus

2020 ◽  
Vol 42 (2) ◽  
Author(s):  
Thomas Leitner ◽  
Anna Werkovits ◽  
Siegfried Kleber ◽  
Gernot Pottlacher
Keyword(s):  
Surface Tension ◽  
Temperature Dependence ◽  
Linear Model ◽  
Tool Steel ◽  
Pure Iron ◽  
Electromagnetic Levitation ◽  
Liquid Density ◽  
Hot Work Tool Steel ◽  
Significant Difference ◽  
Main Component

AbstractW360 is a hot work tool steel produced by voestalpine BÖHLER Edelstahl GmbH & Co KG, a special steel producer located in Styria, Austria. Surface tension and density of liquid W360 were studied as a function of temperature in a non-contact, containerless fashion using the oscillating drop method inside an electromagnetic levitation setup. For both, surface tension and density, a linear model was adapted to present the temperature dependence of these measures, including values for the uncertainties of the fit parameters found. The data obtained are compared to pure iron (with 91 wt% the main component of W360), showing an overlap for the liquid density while there is a significant difference in surface tension (− 5.8 % at the melting temperature of pure iron of 1811 K).

Density and Surface Tension of Fe-Cu Melts

2020 ◽  
Vol 992 ◽  
pp. 545-550
Author(s):  
Vladimir V. Vyukhin ◽  
O.A. Chikova ◽  
Ksenya Yu. Shmakova
Keyword(s):  
Surface Tension ◽  
Temperature Dependence ◽  
Cast Steel ◽  
Liquid Alloys ◽  
Humid Atmosphere ◽  
Damping Characteristics ◽  
Metal Melts ◽  
Cu Alloys ◽  
Two Phases ◽  
Large Machine

Fe-Cu alloys are used as structural materials for manufacture of large machine parts subjected to shock loads. Fe-Cu alloys have a higher corrosion resistance in a humid atmosphere and in salt solutions than cast steel. Fe-Cu alloys have high enough damping characteristics. Upon cooling the Fe-Cu melts is stratified into two phases before crystallization which in field of gravity are separated by density. It is possible to suppress delamination and obtain a material with structure of a “frozen emulsion” by heating melt to the temperature T* determined for each composition by a specific way. In this paper, we studied surface tension of liquid alloys of Fe-1wt.% Cu, Fe-20wt.% Cu, and Fe-30wt.%Cu in order to determine the temperature T*. For the melt of Fe-20wt.% Cu value T*=1670°C is highest. It is confirmed by results of measuring temperature dependence of surface tension. Temperature dependence of the surface tension Fe-Cu melts is characterized by a positive value of the temperature coefficient of surface tension dσ/dT which is abnormal for metal melts. Experimental data on the density, the surface tension of Fe-Cu liquid alloys have of independent metrological importance for practical foundry.

Anomalous Surface Tension of Growing Droplets

1992 ◽  
Vol 20 (6) ◽  
pp. 571-571 ◽  
Author(s):  
T Baumberger ◽  
F Perrot ◽  
D Beysens
Keyword(s):  
Surface Tension ◽  
Anomalous Surface

Temperature dependence of the surface tension for binary mixtures ofn-butanenitrile +n-alkanes

1995 ◽  
Vol 16-16 (1) ◽  
pp. 45-52 ◽  
Author(s):  
J. Aguila-Hern�ndez ◽  
I. Hern�ndez ◽  
A. Trejo
Keyword(s):  
Surface Tension ◽  
Temperature Dependence ◽  
Binary Mixtures
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