A new variant for measuring the surface tension of liquid metals and alloys by the oscillating drop method

Schaefers, Klaus; Kuppermann, G.; Thiedemann, U.; Qin, Jianping; Frohberg, Martin G.

doi:10.1007/bf01442004

Cited by 3 publications

(2 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In recent years, some advanced experimental technologies have been developed to measure the surface tension of liquid metal, among which the oscillation drop technique using electromagnetic levitation takes full advantage of the balance of the electromagnetic force and gravity to avoid the contact of the sample with the container [4][5][6][7]. This measurement technique is superior to other traditional contact methods in two respects.…”

Section: Introductionmentioning

confidence: 99%

Surface tension of undercooled liquid cobalt

Yao

Han

Chen

et al. 2002

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

This paper provides the results on experimentally measured and numerically predicted surface tensions of undercooled liquid cobalt. The experiments were performed by using the oscillation drop technique combined with electromagnetic levitation. The simulations are carried out with the Monte Carlo (MC) method, where the surface tension is predicted through calculations of the work of cohesion, and the interatomic interaction is described with an embedded-atom method. The maximum undercooling of the liquid cobalt is reached at 231 K (0.13Tm) in the experiment and 268 K (0.17Tm) in the simulation. The surface tension and its relationship with temperature obtained in the experiment and simulation are σexp = 1.93 − 0.000 33 (T − T m) N m−1 and σcal = 2.26 − 0.000 32 (T − T m) N m−1 respectively. The temperature dependence of the surface tension calculated from the MC simulation is in reasonable agreement with that measured in the experiment.

show abstract

Section: Introductionmentioning

confidence: 99%

Surface tension of undercooled liquid cobalt

Yao

Han

Chen

et al. 2002

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

show abstract

“…Secondly, density data are not required to determine the surface tension, thereby improving the accuracy of the data. Consequently, the technique has been widely applied for measurement of the surface tension of undercooled liquids in recent years (Eckler et al 1991, Egry et al 1995, Schaefers et al 1996.…”

mentioning

confidence: 99%

Thermophysical properties of undercooled liquid cobalt

Han¹,

Wang²,

Wei³

2002

Philosophical Magazine Letters

View full text Add to dashboard Cite

The surface tension of undercooled liquid cobalt has been measured by the oscillating-drop technique combined with electromagnetic levitation. The accuracy of the method was veri®ed by measurements of the surface tension of liquid nickel. The liquid cobalt was undercooled by up to 231 K (0.13T m ), and its surface tension determined to be ¼ Coˆ1 875 0:348…T T m ) mN m 1 . From this result, the viscosity, self-di usion coe cient, density and thermal di usivity of undercooled liquid cobalt were derived. Using these thermophysical parameters, the growth velocity of cobalt dendrite is calculated and shown to agree well with experimental results. Furthermore, the Marangoni number and the Rayleigh number are calculated; these increase slowly with increasing degree of undercooling.

show abstract