SURFACE-TEMPERATURE OSCILLATIONS OF A FLOATING ZONE RESULTING FROM OSCILLATORY THERMOCAPILLARY CONVECTION

被引：25

作者：

JURISCH, M

机构：

[1] Central Institute for Solid State Physics and Materials Research, Academy of Sciences of the German Dem. Rep.

来源：

JOURNAL OF CRYSTAL GROWTH | 1990年 / 102卷 / 1-2期

关键词：

Molybdenum and Alloys;

D O I：

10.1016/0022-0248(90)90905-Z

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The surface temperature of stationary molten zones in Mo and Nb rods was measured as a function of the heating power. At well defined stability limits, single-mode temperature oscillations were detected. The frequency agreed well with that determined from periodic impurity striations characteristic for crucibleless electron zone melting of Mo at a critical zone length. The results are regarded as an experimental verification of a transition of stationary Marangoni convection to an oscillatory state for low Prandtl number liquids. © 1990.

引用

页码：223 / 232

页数：10

共 21 条

[1]

AVDUEVSKY VS, 1984, SCI F SPACE MANUFACT

[2] COUPLED OSCILLATIONS OF A SOLIDLY ROTATING LIQUID BRIDGE [J].

BAUER, HF .

ACTA ASTRONAUTICA, 1982, 9 (09) :547-563

[3] ANALYSIS OF SURFACE-TENSION DRIVEN FLOW IN FLOATING ZONE-MELTING [J].

CHANG, CE ;

WILCOX, WR .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1976, 19 (04) :355-366

[4] INHOMOGENEITIES DUE TO THERMOCAPILLARY FLOW IN FLOATING ZONE-MELTING [J].

CHANG, CE ;

WILCOX, WR .

JOURNAL OF CRYSTAL GROWTH, 1975, 28 (01) :8-12

[5] THE FLOAT-ZONE GROWTH OF TI3AU AND TI3PT [J].

CHANG, YK .

JOURNAL OF CRYSTAL GROWTH, 1983, 62 (03) :627-632

[6]

Chun C.-H., 1982, CONVECTIVE TRANSPORT, P297

[7] EXPERIMENTS ON THE TRANSITION FROM THE STEADY TO THE OSCILLATORY MARANGONI-CONVECTION OF A FLOATING ZONE UNDER REDUCED GRAVITY EFFECT [J].

CHUN, CH ;

WUEST, W .

ACTA ASTRONAUTICA, 1979, 6 (09) :1073-1082

[8]

CHUN CH, 1983, EUR SPACE AGENCY SPE, V191, P205

[9]

Gill W. N., 1984, Advances in Space Research, V4, P15, DOI 10.1016/0273-1177(84)90446-0

[10]

JEHN HA, 1984, PHYSICAL METALLURGY

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