Thermophysical Properties of Molten Tungsten Measured with an Electrostatic Levitator

被引：24

作者：

Paradis, Paul-Francois ^{[1
]}

Ishikawa, Takehiko ^{[1
]}

Fujii, Ryuichi ^{[2
]}

Yoda, Shinichi ^{[1
]}

机构：

[1] Japan Aerosp Explorat Agcy, Tsukuba, Ibaraki, Japan

[2] Chiba Inst Technol, Narashino, Chiba, Japan

来源：

HEAT TRANSFER-ASIAN RESEARCH | 2006年 / 35卷 / 02期

关键词：

non-contact measurements; density; surface tension; viscosity; tungsten;

D O I：

10.1002/htj.20101

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Thermophysical properties of liquid and supercooled tungsten were measured using non-contact techniques in combination with an electrostatic levitator. Over the 3125-3707 K temperature range, the density measurements can be expressed as rho(T) = 16.7(+/- 0.33) x 10(3) - 1.08(+/- 0.08) (kg.m(-3)) with T-m = 3695 K, leading to a volume expansion coefficient of 6.6 x 10(-5) K-1. In addition, over the 3398-3695 K temperature range, the surface tension (gamma) and viscosity (eta) data can be expressed respectively as gamma(T) = 2.48 x 10(3)(+/- 75) - 0.31(+/- 0.08) (T - T-m) (10(-3) N.m(-1)) and eta(T) = 0.11(+/- 0.02) exp[12.8(+/- 4.1) x 10(4)/(RT)] (10(-3) Pa.s). (C) 2006 Wiley Periodicals, Inc.

引用

页码：152 / 164

页数：13

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