About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Thermodynamics for Sustainability: An EPD Symposium in Honor of Kazuki Morita
|
| Presentation Title |
Influence of Measurement Conditions on Evaluation of Thermal Conductivity of Melts by Hot Wire Method |
| Author(s) |
Keijiro Saito, Kazuki Morita |
| On-Site Speaker (Planned) |
Keijiro Saito |
| Abstract Scope |
The hot-wire method is widely used to measure the thermal conductivity of high-temperature melts. However, large discrepancies remain among different researchers. To address this issue, the present study investigated how measurement conditions affect accuracy using pure water and Na2O-SiO2 melt. In this method, a constant current was applied to a hot wire immersed in the sample, and the thermal conductivity was derived from the linear relationship between the resulting voltage change (ΔV) and logarithmic time (lnt). We developed an objective method to confirm the linearity by directly checking the derivative of ΔV with respect to lnt. It was found that convection and electrical properties of the sample distorted the linearity depending on the applied current value, which had previously been overlooked. Our method successfully detected these distortions and reduced experimental error by up to 60%, thus significantly improving the reliability of the thermal conductivity measurements of high-temperature melts. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Energy Conversion and Storage, Other, |