Theoretical temperature-dependence surface tension of pure liquid gold

被引：12

作者：

Agra, Fathi ^{[1
]}

Ayyad, Ahmed ^{[1
]}

机构：

[1] Hebron Univ, Dept Chem, Fac Sci & Technol, Hebron, West Bank, Israel

来源：

MATERIALS LETTERS | 2011年 / 65卷 / 14期

关键词：

Surface tension; Gold; Temperature dependence; THERMOPHYSICAL PROPERTIES; THERMAL-EXPANSION; METALS; COEFFICIENT; DENSITY;

D O I：

10.1016/j.matlet.2011.04.063

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A calculation, based on statistical thermodynamics, of the surface tension of pure liquid gold, in the temperature range 1337-1653 K, is described. The calculated surface tension of liquid gold was found to be 1100 mJ/m(2) that agrees well with the reported experimental value (1149 mJ/m(2)). Results reveal that below 1480 K, the surface excess entropy changes by one order of magnitude (0.0151 mJ/m(2)K) as compared to the value above this temperature (0.1773 mJ/m(2)K), and thus predicting a structural changes at the surface of pure molten gold at high temperature. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：2124 / 2126

页数：3

共 39 条

[1]

[Anonymous], MAT SCI TECHNOL

[2] THE DETERMINATION OF SURFACE-TENSION AT ELEVATED-TEMPERATURES BY DROP IMAGE-ANALYSIS [J].

ASKARI, M ;

CAMERON, AM ;

OAKLEY, J .

HIGH TEMPERATURE TECHNOLOGY, 1990, 8 (03) :201-207

[3] OBERFLACHENSPANNUNG UND SCHALLGESCHWINDIGKEIT [J].

AUERBACH, R .

EXPERIENTIA, 1948, 4 (12) :473-474

[4] Theoretical consideration of the anomalous temperature dependence of the surface tension of pure liquid gallium [J].

Ayyad, Ahmed ;

Aqra, Fathi .

THEORETICAL CHEMISTRY ACCOUNTS, 2010, 127 (5-6) :443-448

[5] Density and thermal expansion of liquid Ag-Cu and Ag-Au alloys [J].

Brillo, J. ;

Egry, I. ;

Ho, I. .

INTERNATIONAL JOURNAL OF THERMOPHYSICS, 2006, 27 (02) :494-506

[6]

Costa P., 1988, High Temperatures - High Pressures, V20, P59

[7]

Croxton C.A., 1980, Statistical Mechanics of the Liquid Surface

[8] OSCILLATIONS OF MAGNETICALLY LEVITATED ASPHERICAL DROPLETS [J].

CUMMINGS, DL ;

BLACKBURN, DA .

JOURNAL OF FLUID MECHANICS, 1991, 224 :395-416

[9] SURFACE-TENSION MEASUREMENTS OF LIQUID-METALS BY THE OSCILLATING DROP TECHNIQUE [J].

EGRY, I .

JOURNAL OF MATERIALS SCIENCE, 1991, 26 (11) :2997-3003

[10] Surface tension measurements of metallic melts under microgravity [J].

Egry, I ;

Jacobs, G ;

Schwartz, E ;

Szekely, J .

INTERNATIONAL JOURNAL OF THERMOPHYSICS, 1996, 17 (05) :1181-1189

← 1 2 3 4 →