МҰЗДЫҢ ФАЗАЛЫҚ ДИАГРАММАСЫНДАҒЫ 1Һ МҰЗ ТҮРІНІҢ СЕРПІМДІЛІК ЖӘНЕ ЖЫЛУЛЫҚ ҚАСИЕТТЕРІНЕ ТЕМПЕРАТУРАНЫҢ ӘСЕРІН ЗЕРТТЕУ

Abstract

In the scientific article, for the first time, changes in the velocities and volumes of ultrasonic waves in the form of 1h ice in the phase diagram of low temperature and high pressure ice between pressures of 300 MPa and 500 MPa and temperatures of (100-170) K were experimentally measured and the temperature dependences of the coefficient of volumetric thermal increase, reduced and Debye temperature and specific heat capacity at constant pressures were theoretically calculated., graphs were plotted. The measurement of the temperature dependence of the sample volume change in the research work allowed us to estimate the coefficient of thermal volumetric increase. 1h we found the calculation of the coefficient of volumetric increase in the type of ice with isobaric changes before the phase transformation by differentiating the graph V =V(T). An installation was assembled to carry out experimental measurements. Its first part consists of a three–layer piston–cylindrical chamber operating at high pressure (0-2500 MPa) and a lower one (90-250 K), and the second part consists of a measuring device that automatically changes and controls the temperature and pressure of the sample located inside the chamber, the third consists of an ultrasonic pulse system measuring the velocity of elastic waves propagating in the form of the ice under study is 1H lives. Measurements of piston movements, changes in temperature and pressure of the sample were carried out using an automated system. The installation was tested by studying the transformations of ice types from one state to another, the third, fifth, sixth on the phase diagram in the P – T coordinate of the ice. The result obtained on the installation we have assembled coincides with the result obtained by the author of the scientific article.