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 - 1998 |
| Externally published | Yes |
Fingerprint
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
Cite this
The Thermal Analysis in a MA-8 Type Apparatus : The Melting of Gold at 12 GPa. / Sumita, T.; Kato, M.; Yoneda, Akira.
In: Review of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu, Vol. 7, 1998, p. 254-256.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The Thermal Analysis in a MA-8 Type Apparatus
T2 - The Melting of Gold at 12 GPa
AU - Sumita, T.
AU - Kato, M.
AU - Yoneda, Akira
PY - 1998
Y1 - 1998
N2 - 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.
AB - 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.
KW - gold
KW - high pressure
KW - phase transition
KW - pressure effect on the thermocouple emf
KW - thermal analysis
UR - http://www.scopus.com/inward/record.url?scp=0011687110&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0011687110&partnerID=8YFLogxK
U2 - 10.4131/jshpreview.7.254
DO - 10.4131/jshpreview.7.254
M3 - Article
AN - SCOPUS:0011687110
VL - 7
SP - 254
EP - 256
JO - Review of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu
JF - Review of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu
SN - 0917-639X
ER -