About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Characterization of Minerals, Metals and Materials 2022
|
Presentation Title |
Development of Surface Tension and Heat Capacity Measurement Techniques for Molten Materials Using Aerodynamic Levitation |
Author(s) |
Yifan Sun, Hiroaki Muta, Yuji Ohishi |
On-Site Speaker (Planned) |
Yifan Sun |
Abstract Scope |
For aerodynamic levitation, the interaction between the levitation gas and the sample has always been a problem for measuring thermophysical properties. This study will introduce two novel measurement techniques: the ‘drop-bounce’ method for surface tension evaluations and the ‘multiple-gas cooling’ method for heat capacity analysis. The ‘drop-bounce’ method incorporates the idea of free-fall into aerodynamic levitation and allows the sample to oscillate without the influence of the levitation gas. Under such conditions, the sample oscillates as if under microgravity condition, and its ‘true’ surface tension can be obtained. The ‘multiple-gas cooling’ method utilizes two types of inert cooling gas to obtain two cooling curves for the same sample. By solving the radiative and convective heat loss terms together, we can obtain the heat capacity of the liquid sample without prior knowledge of its emissivity. The methods developed in this study are significant for research in aerodynamic levitation and high-temperature melts. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Temperature Materials, Characterization, Nuclear Materials |