Temperature dependence of thermophysical properties for liquid Zr-Sn-Nb-Fe alloy measured at electrostatic levitation state

2021 ◽  
pp. 138667
Author(s):  
L. Hu ◽  
Y.J. Jin ◽  
M.J. Lin ◽  
B. Wei
Keyword(s):  
Temperature Dependence ◽  
Thermophysical Properties ◽  
Electrostatic Levitation

Thermophysical properties of liquid and supercooled ruthenium measured by noncontact methods

2004 ◽  
Vol 19 (2) ◽  
pp. 590-594 ◽  
Author(s):  
P-F. Paradis ◽  
T. Ishikawa ◽  
S. Yoda
Keyword(s):  
Surface Tension ◽  
Heat Capacity ◽  
Temperature Interval ◽  
Expansion Coefficient ◽  
Thermophysical Properties ◽  
Volume Expansion ◽  
Isobaric Heat Capacity ◽  
Electrostatic Levitation ◽  
Entropy Of Fusion ◽  
Volume Expansion Coefficient

Several thermophysical properties of liquid and supercooled ruthenium were measured using electrostatic levitation. Over the 2225–2775 K temperature interval, the density can be expressed as ρ(T) = 10.75 × 103 – 0.56(T – Tm)(kg ⋅ m−3) with Tm = 2607 K. In addition, the surface tension can be expressed as σ(T) = 2.26 × 103 – 0.24(T – Tm)(mN ⋅ m−1) and the viscosity as η(T) = 0.60 exp[4.98 × 104/(RT)] (mPa ⋅ s) over the 2450–2725 K range. The isobaric heat capacity was estimated as CP(T) = 35.9 + 1.1 × 10−3(T – Tm)[(J/(mol K)] over the 2200–2750 K span by assuming a constant emissivity. The volume expansion coefficient, the enthalpy, and the entropy of fusion were also calculated as 5.2 × 10−5 K−1, 29.2 kJ ⋅ mol−1, and 11.2 J/(mol K).

Structure and Thermophysical Properties of Molten BaGe Using Electrostatic Levitation Technique

2008 ◽  
Vol 29 (6) ◽  
pp. 2015-2024 ◽  
Author(s):  
Akiko Ishikura ◽  
Akitoshi Mizuno ◽  
Masahito Watanabe ◽  
Tadahiko Masaki ◽  
Takehiko Ishikawa ◽  
...  
Keyword(s):  
Thermophysical Properties ◽  
Electrostatic Levitation

Noncontact thermophysical property measurement of liquid cerium by electrostatic levitation

2009 ◽  
Vol 24 (7) ◽  
pp. 2449-2452 ◽  
Author(s):  
Jianqiang Li ◽  
Takehiko Ishikawa ◽  
Junpei T. Okada ◽  
Yuki Watanabe ◽  
Jianding Yu ◽  
...  
Keyword(s):  
Thermophysical Properties ◽  
Sessile Drop ◽  
Industrial Applications ◽  
High Reactivity ◽  
Electrostatic Levitation ◽  
Gaseous Environment ◽  
Density Surface ◽  
Property Measurement ◽  
Metallurgical Processes

The knowledge of thermophysical properties of active metals is critical to understand their metallurgical processes and further industrial applications. However, due to high reactivity and melt contamination from a crucible and gaseous environment, accurate values of the properties are hard to obtain using conventional methods such as the sessile-drop method. In the present study, a vacuum electrostatic levitator was used to circumvent these difficulties and enabled the noncontact determination of thermophysical properties of liquid cerium even in an undercooled state. The data of density, surface tension, and viscosity of molten cerium were reported, as well as their temperature dependence.

Temperature Dependence and Structural Influence on the Thermophysical Properties of Eleven Commercial Ionic Liquids

2012 ◽  
Vol 51 (5) ◽  
pp. 2492-2504 ◽  
Author(s):  
Raquel G. Seoane ◽  
Sandra Corderí ◽  
Elena Gómez ◽  
Noelia Calvar ◽  
Emilio J. González ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Temperature Dependence ◽  
Thermophysical Properties ◽  
Structural Influence

scholarly journals On the Temperature Dependence of Vaporization Enthalpy and its Correlation with Surface Tension.

2021 ◽  
Author(s):  
Amin Alibakhshi ◽  
Bernd Hartke
Keyword(s):  
Surface Tension ◽  
Critical Temperature ◽  
Melting Point ◽  
Temperature Dependence ◽  
Wide Temperature Range ◽  
Thermophysical Properties ◽  
Vaporization Enthalpy ◽  
Temperature Range

Temperature dependence of vaporization enthalpy is one of the most important thermophysical properties of compounds. In the present study, we theoretically developed relationships applicable to evaluation of vaporization enthalpy of compounds from diverse chemical families for a wide temperature range from melting point to the critical temperature. One outcome of the proposed approach is a relationship describing the correlation between the surface tension and vaporization enthalpy which outperforms the extensively applied Kabo method proposed for the same purpose.<br>

scholarly journals THERMOPHYSICAL PROPERTIES OF ALLOY COMPOSITIONS (2Bi2O3∙B2O3)100-x(2Bi2O3∙3GeO2)x (x=0, 10, 50)

2021 ◽  
pp. 44-48
Author(s):  
S.I. Bananyarli ◽  
Keyword(s):  
Thermal Conductivity ◽  
Heat Capacity ◽  
Phase Transitions ◽  
Thermal Resistance ◽  
Temperature Dependence ◽  
Thermophysical Properties ◽  
Chemical Bonds ◽  
Temperature Range ◽  
The Difference

The termophisical properties, namely, the temperature dependence of thermal conductivity, thermal resistance and heat capacity of the allays compositions (2Bi2O3∙B2O3)100-x (2Bi2O3∙3GeO2)x in the (300–600) K temperature range have ligated been invest. An increase in thermal conductivity χ(T) above 500 K is probably associated with the softening of alloys and the presence of blurred phase transitions, which are accompanied by partial breaking of chemical bonds. It was revealed that the heat capacity in alloys of the compositions (2Bi2O3∙B2O3)100-x (2Bi2O3∙3GeO2)x increases with an increase in the GeO2 concentration. In the studied samples, that showed their own disorder during solidification, the thermal conductivity is strongly reduced due to the enhancement of the anharmonicity of phonon – phonon interactions. İn turn a small "disorder" introduced by defects due to the difference in masses is not noticeable against the background of the huge "disorder" inherent in oxide substances

Sign in / Sign up

Export Citation Format

Share Document