Abstract
High pressure thermal analysis and differential thermal analysis have been developed for detecting phase transitions in an MA-8 type apparatus. By using these methods, the melting and freezing of gold was investigated at 12 GPa. We observed the latent heat signal of gold both on melting and freezing processes, and determined the melting temperature at 1868±10 K. This temperature is lower by about 60 K than the extrapolation of the previous experiments by using the Kraut-Kennedy equation. We interpreted this discrepancy to be due to the pressure effect on the emf of the W-3%Re/W-25%Re thermocouple.
| Original language | English |
|---|---|
| Pages (from-to) | 254-256 |
| Number of pages | 3 |
| Journal | Review of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu |
| Volume | 7 |
| DOIs | |
| Publication status | Published - Jan 1 1998 |
Keywords
- gold
- high pressure
- phase transition
- pressure effect on the thermocouple emf
- thermal analysis
ASJC Scopus subject areas
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics
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Cite this
Sumita, T., Kato, M., & Yoneda, A. (1998). The Thermal Analysis in a MA-8 Type Apparatus: The Melting of Gold at 12 GPa. Review of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu, 7, 254-256. https://doi.org/10.4131/jshpreview.7.254