Thermophysical Properties of Molten Fe–Cu Alloy Measured Using the Electrostatic Levitation Furnace Aboard the International Space Station (ISS-ELF) under Microgravity Conditions

The thermophysical properties of molten Fe–Cu alloys, including density, surface tension, and viscosity, were measured using the electrostatic levitation furnace aboard the International Space Station (ISS-ELF) under microgravity conditions, which provided an environment that facilitated accurate me...

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Published in:ISIJ International 2024, pp.ISIJINT-2024-277
Main Authors: Seimiya, Yusaku, Kobatake, Hidekazu, Tono-Oka, Kazuki, Sugahara, Riku, Kurosawa, Shuya, Shiratori, Suguru, Sugioka, Ken-ichi, Ishikawa, Takehiko, Koyama, Chihiro, Watanabe, Yuki, Shimonishi, Rina, Ozawa, Shumpei
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Language:English
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density
electrostatic levitation
microgravity
surface tension
thermal storage
viscosity
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container_start_page ISIJINT-2024-277
container_title ISIJ International
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creator Seimiya, Yusaku
Kobatake, Hidekazu
Tono-Oka, Kazuki
Sugahara, Riku
Kurosawa, Shuya
Shiratori, Suguru
Sugioka, Ken-ichi
Ishikawa, Takehiko
Koyama, Chihiro
Watanabe, Yuki
Shimonishi, Rina
Ozawa, Shumpei
description The thermophysical properties of molten Fe–Cu alloys, including density, surface tension, and viscosity, were measured using the electrostatic levitation furnace aboard the International Space Station (ISS-ELF) under microgravity conditions, which provided an environment that facilitated accurate measurements. The densities of the molten Fe–25at%Cu and Fe–50at%Cu alloys decreased linearly with increasing temperature, and higher copper compositions resulted in increased density. The surface tension of the molten alloys exhibited a unique up-convex temperature dependence curve that initially increased and then decreased as the temperature increased. Viscosity measurements indicated that the viscosity of the molten Fe–Cu alloys decreased with increasing temperature, following a quadratic curve, and that an increase in the copper composition resulted in lower viscosity.
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subjects density
electrostatic levitation
microgravity
surface tension
thermal storage
viscosity
title Thermophysical Properties of Molten Fe–Cu Alloy Measured Using the Electrostatic Levitation Furnace Aboard the International Space Station (ISS-ELF) under Microgravity Conditions
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