Abstract
Recent investigation at our institute revealed that the solid-fluid-fluid three-phase line of the system helium-nitrogen shows two quadruple points in the pressure range up to 10 GPa. Since each quadruple point is connected with four three-phase lines, the phase diagram is very complicated. We have detected the phase transitions representing solid-solid-fluid equilibria. Moreover, two lines of constant composition have been determined as a function of temperature and pressure. These results are discussed together with the implications for the phase diagram of both He-N2 and pure nitrogen.
Original language | English |
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Pages (from-to) | 15-25 |
Number of pages | 11 |
Journal | International Journal of Thermophysics |
Volume | 10 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1 Jan 1989 |
Externally published | Yes |
Keywords
- binary mixtures
- diamond anvil cell
- helium
- high pressure
- nitrogen
- phase equilibria