ABSTRACT
This chapter describes the apparatus for producing high pressures and methods for obtaining quantitative information about changing the phase composition of the sample.
1.1.1.1. Producing a high-pressure gas environment
The methods for obtaining pressures up to 25 kbar at temperatures ranging from room temperature to 400-500°C using a pressure-transmitting medium liquid (gasoline, isopentane, etc.) have been sufficiently developed [1.1-1.8]. Difficulties arise when the study should be conducted under hydrostatic conditions at higher temperatures (up to 800-900°C and above), which is necessary for the study of transformations in a wide temperature range. In this regard, the method using a compressed inert gas (argon) has been developed and applied.
