Density of superheated and undercooled liquid alumina by a contactless method

被引：95

作者：

Glorieux, B ^{[1
]}

Millot, F ^{[1
]}

Rifflet, JC ^{[1
]}

Coutures, JP ^{[1
]}

机构：

[1] CNRS, CRMHT, F-45071 Orleans, France

来源：

INTERNATIONAL JOURNAL OF THERMOPHYSICS | 1999年 / 20卷 / 04期

关键词：

contactless techniques; density; high-speed digital video; high temperatures; laser heating; liquid alumina;

D O I：

10.1023/A:1022650703233

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The density of liquid alumina drops maintained in levitation with an aerodynamic device and heated with CO2 lasers is determined by analysis of high-speed video digital images between 2000 and 3100 K in various gases. It is shown that consistent results can be achieved for the lighter drops (m < 100 mg) which do not depend on the nature of the gas. Experiments performed with lasers impinging the drop surface or during free cooling of the preheated drop gave similar results. The density is represented by the Following expression: d = (2.79 +/- 0.01)( 1 - alpha(T - 2500)) g . cm(-3), where alpha = (4.72 +/- 0.14) x 10(-5) K-1.

引用

页码：1085 / 1094

页数：10

共 11 条

[1] NONLINEAR COMPOSITION DEPENDENCE OF MOLAR VOLUME OF MELTS IN THE CAO-AL2O3-SIO2 SYSTEM [J].

COURTIAL, P ;

DINGWELL, DB .

GEOCHIMICA ET COSMOCHIMICA ACTA, 1995, 59 (18) :3685-3695

[2]

COUTURES JP, 1994, REV INT HAUTES TEMP, V29, P123

[3]

Elyutin V.P., 1973, NEO MAT, V9, P1585

[4]

Granier B, 1983, REV INT HAUTES TEMP, V20, P31

[5] SURFACE TENSIONS AND DENSITIES OF MOLTEN AL2O3, TI2O3, V2O5 AND NB2O5 [J].

IKEMIYA, N ;

UMEMOTO, J ;

HARA, S ;

OGINO, K .

ISIJ INTERNATIONAL, 1993, 33 (01) :156-165

[6]

KINGERY WD, 1958, J AM CERAM SOC, V42, P6

[7] THE DENSITY OF LIQUID ALUMINIUM OXIDE [J].

KIRSHENBAUM, AD ;

CAHILL, JA .

JOURNAL OF INORGANIC & NUCLEAR CHEMISTRY, 1960, 14 (3-4) :283-287

[8]

MITIN BS, 1970, RUSS J PHYS CH USSR, V44, P741

[9]

RASMUSSEN JJ, 1972, J AM CERAM SOC, V55, P398

[10]

SHPILRAIN EE, 1973, HIGH TEMP HIGH PRESS, V5, P191

← 1 2 →