Abstract
The melting behavior of spinel in the Fe–Al–O system at high temperatures (1500–1800 °C) was studied by a combination of experimental and computational investigations. Differential thermal analysis (DTA) at ultra-high temperatures coupled with cooling traces on CO2 laser-heated levitated samples provided melting temperatures and the heats of fusion of (Fe,Al)3O4 spinel phases. The experimental results are in fair agreement with the predictions using a published CALPHAD description and areas for modeling improvement are identified. New insights into the melting of defect spinel are provided.
| Original language | English |
|---|---|
| Article number | 101798 |
| Journal | Calphad: Computer Coupling of Phase Diagrams and Thermochemistry |
| Volume | 70 |
| DOIs | |
| State | Published - Sep 2020 |
Funding
This work was funded by Oak Ridge National Laboratory through PHD GO! Program and the U.S. Department of Energy Office of Nuclear Energy (DOE-NE) Advanced Fuels Campaign (AFC). The authors would like to thank Shmuel Hayun, Kristina Lilova, Pardha Maram and Sergey Ushakov (UC Davis) for assistance during the synthesis, characterization and melting experiments. Nick Botto (UC Davis) is acknowledged for his assistance with electron microprobe analysis. This work was funded by Oak Ridge National Laboratory through PHD GO! Program and the U.S. Department of Energy Office of Nuclear Energy (DOE-NE) Advanced Fuels Campaign (AFC). The authors would like to thank Shmuel Hayun, Kristina Lilova, Pardha Maram and Sergey Ushakov (UC Davis) for assistance during the synthesis, characterization and melting experiments. Nick Botto (UC Davis) is acknowledged for his assistance with electron microprobe analysis.
| Funders | Funder number |
|---|---|
| DOE-NE | |
| Kristina Lilova | |
| Pardha Maram and Sergey Ushakov | |
| Shmuel Hayun | |
| Office of Nuclear Energy | |
| Oak Ridge National Laboratory | |
| University of California, Davis |