[M-IS17] Interface- and nano-phenomena on crystal growth and dissolution

[MIS17-P01] Toward for the developing the thermal storage materials utilizing the Electrostatic Levitation Furnace in "Kibo" in space

*Hidekazu Kobatake¹, Kazuki Tonooka², Shumpei Ozawa², Ken'ichi Sugioka³, Suguru Shiratori⁴, Ken Nagashima⁵, Hirohisa Oda⁶, Hideki Saruwatari ⁶, Chihiro Koyama⁶, Takehiko Ishikawa⁶ (1.Hirosaki University, 2.Chiba Institute of Technology, 3.Toyama Prefectural University, 4.Tokyo City University, 5.Hokkaido University, 6.JAXA)

Keywords:Thermophysical property, Electro Static Levitation

Thermal storage has attracted attention for stabilizing the supply of renewable energy or for the utilization of the heat, which is emitted from the industry. Thermal storage technology has the potential to efficiently store and stabilize thermal energy in relatively compact equipment, but it is necessary to increase the heat exchange efficiency and durability. A phase-separated alloy has predictably effective for that purpose as thermal storage materials. Thermophysical properties of the phase-separated alloy of molten state are required to control the microstructure of the alloys. Despite the importance, it is difficult to measure the thermophysical properties of molten alloys on the ground.
In this project, we focus on phase-separated alloys such as Fe-Cu, Al-Si, and Cu-Si, measure their thermophysical properties and nucleation rate in outer space, and aim to design highly efficient energy storage materials.