Determining Thermophysical Properties of Normal and Metastable Liquid Zr-Fe Alloys by Electrostatic Levitation Method

2020 ◽  
Vol 51 (8) ◽  
pp. 4074-4085
Author(s):  
C. H. Zheng ◽  
H. P. Wang ◽  
P. F. Zou ◽  
L. Hu ◽  
B. Wei
Keyword(s):  
Thermophysical Properties ◽  
Electrostatic Levitation ◽  
Metastable Liquid ◽  
Fe Alloys

scholarly journals Thermophysical properties of molten core materials: Zr–Fe alloys measured by electrostatic levitation

2016 ◽  
Vol 53 (12) ◽  
pp. 1943-1950 ◽  
Author(s):  
Yuji Ohishi ◽  
Hiroaki Muta ◽  
Ken Kurosaki ◽  
Junpei T. Okada ◽  
Takehiko Ishikawa ◽  
...  
Keyword(s):  
Thermophysical Properties ◽  
Electrostatic Levitation ◽  
Fe Alloys ◽  
Core Materials

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.

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