ELECTROMAGNETIC-FIELD APPLICATION IN THE PROCESSES OF SINGLE-CRYSTAL GROWTH UNDER MICROGRAVITY

被引：6

作者：

GELFGAT, YM

机构：

[1] Institute of Physics, Latvian Academy of Sciences Salaspils-1

来源：

ACTA ASTRONAUTICA | 1995年 / 37卷

关键词：

D O I：

10.1016/0094-5765(95)00059-9

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

The paper discusses problems of electromagnetic field employment in space technologies for semiconductor single crystal growth as means to stabilize and suppress residual convective flows of a non-gravity character. Here one can find the data on the steady magnetic field effects on hydrodynamics and heat/mass transfer in melt as well as simple criteria dependencies to estimate these effects on the thermogravity and thermocapillary convections are proposed. A possibility of generation of specific additional types of melt convective flows in the steady fields is analyzed here. The example of the thermoelectromagnetic convection illustrates the effect of the above fields of the growth process characteristics. The features of effect of alternating magnetic fields on hydrodynamics and heat/mass transfer in melt and at the solidification front are also discussed. A rotating magnetic field serves here as an example of the alternating magnetic field employment for flow stabilization, stirring of many-component melts, change of the solidification front shape, etc. A combination of two types of magnetic fields in one electromagnetic device is proposed in order to control growth processes by combined field effect.

引用

页码：333 / 345

页数：13

共 19 条

[1]

Gelfgat, Sorkin, On a magnetohydrodynamic effect on parameters of convective transfer in experiments on space technology, The Gagarin Scientific Seminar on Cosmonautics and Aviation, pp. 289-290, (1984)

[2]

Muller, Convection and inhomogeneities in crystal growth from the melt. — Crystals, 12, (1988)

[3]

Baumgart, Gewald, Rupp, Stierlen, Muller, The use of magnetic field and microgravity in melt growth of semiconductors: a comparative study, Proc. of the 7th European Symposium on Material and Fluid Sciences in Microgravity, (1990)

[4]

Grishin, Leskov, On melt solidification under weightlessness, Problems of Mechanics and Heat Transfer in Space Technology, pp. 207-224, (1980)

[5]

Barmin, Et al., Meat/mass transfer in melt at InSb solidification under weightlessness, Hydrodynamics and Heat/Mass Transfer in Weightlessness, pp. 209-219, (1982)

[6]

Barmin, Et al., Thermocapillary convection in a magnet field. — Microgravity Fluid Mechanics, IUTAM Symposium, pp. 217-225, (1991)

[7]

Barmin, Verezub, Et al., On some factor influence on semiconductor material properties produced by the floating zone method under microgravity conditions, (1988)

[8]

Barmin, Gelfgat, Senchenkov, Smirnova, Effect of the magnetic field on semiconductor material solidification by the floating zone method, Magnitnaja Godrodinamika, 4, pp. 110-114, (1988)

[9]

Bojarevich, Gelfgat, Gorbunov, Melt magnetohydrodynamics of single crystal growth, Liquid metal Magnetohydrodynamics, pp. 127-134, (1988)

[10]

Gelfgat, Gorbuvov, On additional source of forced convection in semiconductor material melts during single crystal growth in a magnetic field, DAN USSR, 306, 3, pp. 604-608, (1989)

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