Stability of an electromagnetically levitated spherical sample in a set of coaxial circular loops

Rapid solidification of Ni-Nb alloys promotes the formation of amorphous structure. Preliminary results indicate promising elastic properties and high fracture strength for the metallic glass. Knowledge of the thermal stability of the amorphus alloy and the changes in properties with temperature is therefore of prime importance. In this work rapidly solidified Ni-Nb alloys were analyzed with transmission electron microscopy (TEM) during in-situ heating experiments and after isothermal annealing of bulk samples. Differential thermal analysis (DTA), scanning electron microscopy (SEM) and x-ray diffraction (XRD) techniques were also used to characterize both the solidification and devitrification sequences.Samples of Ni-44 at.% Nb were electromagnetically levitated, melted, and rapidly solidified by splatquenching between two copper chill plates. The resulting samples were 100 to 200 μm thick discs of 2 to 3 cm diameter. TEM specimens were either ion-milled or alternatively electropolished in a methanol-10% sulphuric acid solution at 20 V and −40°C.

Download Full-text

Precise Density Measurements for Electromagnetically Levitated Liquid Combined with Surface Oscillation Analysis

International Journal of Thermophysics ◽

10.1007/s10765-008-0533-7 ◽

2008 ◽

Vol 29 (6) ◽

pp. 2006-2014 ◽

Cited By ~ 16

Author(s):

Masayoshi Adachi ◽

Tomowo Aoyagi ◽

Akitoshi Mizuno ◽

Masahito Watanabe ◽

Hidekazu Kobatake ◽

...

Keyword(s):

Surface Oscillation ◽

Density Measurements ◽

Oscillation Analysis ◽

Electromagnetically Levitated

Download Full-text

Reverse Monte Carlo study of spherical sample under non-periodic boundary conditions: the structure of Ru nanoparticles based on x-ray diffraction data

Journal of Physics Condensed Matter ◽

10.1088/0953-8984/25/45/454211 ◽

2013 ◽

Vol 25 (45) ◽

pp. 454211 ◽

Cited By ~ 12

Author(s):

Orsolya Gereben ◽

Valeri Petkov

Keyword(s):

Monte Carlo ◽

Diffraction Data ◽

Periodic Boundary ◽

Monte Carlo Study ◽

Periodic Boundary Conditions ◽

Reverse Monte Carlo ◽

X Ray Diffraction ◽

X Ray ◽

Ru Nanoparticles ◽

Spherical Sample

Download Full-text

The influence of Marangoni effect on flow and deformation of an electromagnetically levitated molten droplet under static magnetic fields

International Journal of Heat and Mass Transfer ◽

10.1016/j.ijheatmasstransfer.2016.05.088 ◽

2016 ◽

Vol 101 ◽

pp. 629-636 ◽

Cited By ~ 6

Author(s):

Lin Feng ◽

Wan-Yuan Shi

Keyword(s):

Magnetic Fields ◽

Marangoni Effect ◽

Molten Droplet ◽

Static Magnetic Fields ◽

Electromagnetically Levitated

Download Full-text

Theory of control system of electromagnetically levitated bogie truck

Electrical Engineering in Japan ◽

10.1002/eej.4390990609 ◽

1979 ◽

Vol 99 (6) ◽

pp. 62-69 ◽

Cited By ~ 5

Author(s):

Sakae Yamamura ◽

Kohei Ohnishi ◽

Eisuke Masada

Keyword(s):

Control System ◽

Electromagnetically Levitated

Download Full-text

Critical Ambient Pressure and Critical Cooling Rate in Optomechanics of Electromagnetically Levitated Nanoparticles

Journal of the Optical Society of America B ◽

10.1364/josab.439655 ◽

2021 ◽

Author(s):

Amir Jazayeri

Keyword(s):

Cooling Rate ◽

Ambient Pressure ◽

Critical Cooling Rate ◽

Electromagnetically Levitated

Download Full-text

High-resolution inductive measurement of electrical resistivity and density of electromagnetically levitated liquid metal droplets

Review of Scientific Instruments ◽

10.1063/1.5065482 ◽

2018 ◽

Vol 89 (12) ◽

pp. 124709 ◽

Cited By ~ 8

Author(s):

Georg Lohöfer

Keyword(s):

Electrical Resistivity ◽

High Resolution ◽

Liquid Metal ◽

Inductive Measurement ◽

Electromagnetically Levitated ◽

Metal Droplets

Download Full-text

A theory of the dielectric polarization of polar substances

Proceedings of the Royal Society of London Series A - Mathematical and Physical Sciences ◽

10.1098/rspa.1956.0216 ◽

1956 ◽

Vol 238 (1213) ◽

pp. 235-244 ◽

Cited By ~ 87

Keyword(s):

Dielectric Constant ◽

Short Range ◽

Approximate Equation ◽

Mean Square ◽

Dielectric Polarization ◽

Bulk Properties ◽

Classical Statistical Mechanics ◽

Spherical Sample ◽

The Mean ◽

Onsager Equation

With the aid of classical statistical mechanics, a general expression for the static dielectric constant is derived. It is found, as in earlier work, that the dielectric constant is dependent upon the mean-square dipole moment of a macroscopic spherical sample of the substance. This mean-square moment is expanded as a series in powers of the mean molecular polarizability, and the terms proportional to the zero and first powers are evaluated in detail and in such a way that the long- and the short-range effects are separated. The former are determined with the aid of macroscopic arguments, so that a purely molecular theory remains. In the limit when short-range directional forces are zero, the formula reduces to the well-known Onsager equation. It is found that it is not in general legitimate to replace the surroundings of a macroscopic sample by a continuum having the bulk properties of the substance, and for this reason the approximate equation of Harris & Alder is found to lead to doubtful conclusions. The general equations are applied to the experimental data for water and other liquids, and the results are not unsatisfactory.

Download Full-text