Design of a Compact and Multi-Function Magnetic Field Steered Arc Source

2012 ◽  
Vol 152-154 ◽  
pp. 1698-1704 ◽  
Author(s):  
Wen Chang Lang ◽  
Bai Zhong Wu ◽  
Bin Gao
Keyword(s):  
Magnetic Field ◽  
Permanent Magnets ◽  
Rotating Magnetic Field ◽  
Control Mode ◽  
Dc Motors ◽  
Ac Motors ◽  
Large Particles ◽  
Magnetic Field Generator ◽  
Spot Motion ◽  
Magnet Yoke

Based on the principle of the control of magnetic field on arc spot motion, a compact and multi-function magnetic field steered arc source has been designed in this paper. The rotating magnetic field generator driven by small DC motors or AC motors has been also equipped behind the base of the target materials of magnetic field steered arc source. The magnet yoke fixed on shaft will be driven by the motors so as to promote the rotation of permanent magnets which are rationally distributed on magnet yoke. The different distribution of permanent magnets will produce the rotating magnetic field with different configuration structures and then the purpose of multi-control mode can be achieved. Meanwhile, the dynamic rotating magnetic field with different configurations have been also produced in this design through employing the simple and compact arc source as well as the permanent magnet with different distributions in order to improve the discharge form of arc spots, control the trajectory of arc spots, improve the utilization of target materials and the uniformity of etching as well as reduce or inhibit the emission of large particles. At the same time, the high-quality film can be also prepared so as to realize the arc spot control with various forms in an arc source, satisfy the different demands and expand the application of arc ion plating.

scholarly journals Variable single-axis magnetic-field generator using permanent magnets

AIP Advances ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 115312 ◽  
Author(s):  
Oleg Tretiak ◽  
Peter Blümler ◽  
Lykourgos Bougas
Keyword(s):  
Magnetic Field ◽  
Permanent Magnets ◽  
Magnetic Field Generator

scholarly journals Rotation of Liquid Metal Droplets Solely Driven by the Action of Magnetic Fields

2019 ◽  
Vol 9 (7) ◽  
pp. 1421 ◽  
Author(s):  
Jian Shu ◽  
Shi-Yang Tang ◽  
Sizepeng Zhao ◽  
Zhihua Feng ◽  
Haoyao Chen ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Liquid Metal ◽  
Permanent Magnets ◽  
The Self ◽  
Rotating Magnetic Field ◽  
Fluid Mixture ◽  
Cooling Fluid ◽  
Novel Method ◽  
Metal Droplets

The self-rotation of liquid metal droplets (LMDs) has garnered potential for numerous applications, such as chip cooling, fluid mixture, and robotics. However, the controllable self-rotation of LMDs utilizing magnetic fields is still underexplored. Here, we report a novel method to induce self-rotation of LMDs solely utilizing a rotating magnetic field. This is achieved by rotating a pair of permanent magnets around a LMD located at the magnetic field center. The LMD experiences Lorenz force generated by the relative motion between the droplet and the permanent magnets and can be rotated. Remarkably, unlike the actuation induced by electrochemistry, the rotational motion of the droplet induced by magnetic fields avoids the generation of gas bubbles and behaves smoothly and steadily. We investigate the main parameters that affect the self-rotational behaviors of LMDs and validate the theory of this approach. We further demonstrate the ability of accelerating cooling and a mixer enabled by the self-rotation of a LMD. We believe that the presented technique can be conveniently adapted by other systems after necessary modifications and enables new progress in microfluidics, microelectromechanical (MEMS) applications, and micro robotics.

Study of an aluminium mixing system based on permanent magnets

2020 ◽  
Vol 39 (1) ◽  
pp. 192-197
Author(s):  
Andrey Morev ◽  
Alexander Aliferov
Keyword(s):  
Magnetic Field ◽  
Permanent Magnets ◽  
Rotation Velocity ◽  
Rotating Magnetic Field ◽  
The Finite Element Method ◽  
Ansys Software ◽  
Angular Rotation ◽  
Content Type ◽  
Maximum Value ◽  
The Magnetic Field

Purpose The purpose of this paper is to investigate the effect of the rotating magnetic field of permanent magnets on the aluminium melt bath. Design/methodology/approach This model was developed in the ANSYS software package and is based on the application of the finite element method and finite volume. Findings The distribution of the velocity of the melt in a cylindrical vertical bath and the dependence of the maximum value of the melt displacement on the angular rotation velocity of the system of permanent magnets is obtained. Originality/value This work focusses on the interaction of the magnetic field of the moving magnets with the molten metal.

Construction of the Pulsed High Magnetic Field Generator up to 33T and the Enhancements of the Magnetic Coercivity in High Fields

2012 ◽  
Vol 721 ◽  
pp. 41-46 ◽  
Author(s):  
Yasushi Nakahata ◽  
Koji Yamada ◽  
Jiao Lian Luo ◽  
Hiroyasu Shimoji ◽  
Bartosz E. Borkowski ◽  
...  
Keyword(s):  
Magnetic Field ◽  
High Magnetic Field ◽  
Permanent Magnets ◽  
Pulsed Magnetic Field ◽  
Pulsed Field ◽  
High Fields ◽  
Magnetic Field Generator ◽  
Pulsed High Magnetic Field ◽  
Negative Field

M-Heff full curves up to 19T for the permanent magnets composed of Nd-Fe-B were very precisely observed by using specially designed magnetizer. The pulsed magnetic field directions were safely reversed with the same coil-end to ground side of coil positive and negative field directions. The coercivity enhancements were observed by 15% in high pulsed field applications.

scholarly journals Efisiensi Motor Sinkron Linier dengan Magnet Permanen Sebagai Penggerak KRL Terbaru

2019 ◽  
Vol 11 (2) ◽  
pp. 66-70
Author(s):  
Sofitri Rahayu ◽  
Yogi Baskoro
Keyword(s):  
Magnetic Field ◽  
High Speed ◽  
Permanent Magnets ◽  
Synchronous Motor ◽  
Dc Motors ◽  
Electromagnetic Power ◽  
Linear Synchronous Motors ◽  
Magnetic Poles ◽  
The Magnetic Field ◽  
Electric Train

The latest electric train at this time has begun to be widely used linear synchronous motors with permanent magnets as driving locomotives.  This  permanent  magnet  has  the  same  function  as  a conventional synchronous motor which is to produce a magnetic field so that the motor can move linearly. This  linear  synchronous  motor  does  not  have  a  gear  (gear)  and  axis,  but  the  mechanical motion of this linear motor is synchronous with the magnetic field running. This running magnetic field is produced by the entanglement of the three phases and the arrangement of magnetic poles U, S, U, S. Because the motor is linear synchronous is a high-speed motor, the mechanical speed is the same as the speed of the magnetic field running. So that this motor is capable of producing large thrust compared to the use of conventional motors (DC motors and induction motors) to drive electric rail trains. If the conventional synchronous motor uses a frequency of 50 Hz, then the linear high-speed synchronous motor uses a frequency of 5-50 Hz in changing its speed and this research the efficiency, electromagnetic power (thrust) and thrust force of a synchronous motor will be analyzed. linear according to the frequency selection from 5-50 Hz, to drive the electric train locomotive.

Free Surface Flow Control and Electromagnetically-Driven Stirring by a Double-Permanent-Magnet-Driver

2006 ◽  
Vol 508 ◽  
pp. 629-634
Author(s):  
Xiao Dong Wang ◽  
Yves Fautrelle ◽  
M.D. Dupouy ◽  
Ting Jie Li ◽  
J.Z. Jin
Keyword(s):  
Magnetic Field ◽  
Free Surface ◽  
Permanent Magnet ◽  
Shape Control ◽  
Permanent Magnets ◽  
Continuous Caster ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Rotating Magnetic Field ◽  
Surface Shape

This paper presents a method aimed at controlling free surface flow and stirring melt via a magnetic field induced by the permanent magnets. The rotating magnetic field (RMF) can realize the free surface shape control and the melt stirring simultaneously. Numerical model was built to analyse the magnetic field distribution. Two drivers that have the same structure were analysed and optimised. Quasi-steady-state free surface was obtained by regulating the rotating velocity of the magnetic drivers, which is proportional to the magnetic force. Solidification experiment was preformed on a platform of a mini-continuous caster. The solidifying front was observed via addition of a small quantity of Sn-wt.43%Pb into the continuous casting alloy Sn-wt.3.5%Pb, it was found that the solidifying shell grows uniformly under the condition of a proper imposition of the double-permanent-magnet-driver.

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