The Research Of Gasket Heating High Temperature And High Pressure Device

High-pressure Physics is one subject of which research substances in the physical act under high pressure. It is developed based on materials, earth and planetary sciences. Under high pressure, the distance change between internal molecule and atoms of substance lead to variation of crystallographic lattice constant, Chemical bonds , energy level or band structure, which affect the material mechanical, thermal, optical, electricity and chemical properties at the macro. High-pressure physics in biology, chemistry, materials science and many other fields have broad prospects for development, particularly in the geophysical applications. The development of high-pressure physics depends on the high pressure technology. With the progress of high-pressure technology, it has developed a wide choice of high-pressure devices and some improved type. However, a variety of high temperature and high pressure devices have many problems to be solved, so the design of a new type of in situ high temperature and high pressure device is necessary. We have summed the previous heat way up, independent invented a high temperature and high pressure systems which is much simpler, better reproducibility, easier to build up, called heating gasket high-pressure and high temperature equipment. We have introduced its principle, structure and heating methods, and make a summary and analysis of the problem during the invention. With this equipment, we have successfully made the 5GPa, 1200K and0.2GPa, 1500K conditions of high temperature and high pressure in situ Raman measurements.High temperature and high pressure experimental equipment make the feldspar of high temperature and high pressure experimental study possible. We select natural feldspar as the sample. To make an analysis of each part of Component, which use of powder X-ray diffraction measurements and determine the degree of crystallization of the vitreous part and the crystal part. Using the Diamond Anvil Cell (DAC) make a high-pressure research of the feldspar crystal piece and powder. According to the in situ spectroscopic analysis, we supposed that its structure changed in the pressure of 6.7 GPa, performance for mutation the Raman frequency shift. But we also need high pressure synchrotron radiation experiments to confirm it. And at the same time found that pressure make crystal feldspar transform into a nonreversible amorphous phase. Then we use the new high temperature and high pressure equipment which we invented make low pressure high temperature experiment of the crystals of feldspar powder, Its main three vibration Raman peak shift rate are -0.00477cm-1/K,-0.00290 cm-1/K,and-0.00444 cm-1/K, The temperature of the main Raman frequency shift is a blue shift to the low frequency direction, in the use of DAC make feldspar powder in 5GPa, 1100K conditions, we analyze the phenomenon of Raman peak form blue shift change to of the red shift. The combined effect of temperature and pressure at the same time, sanidine is still the performance the respective affect of temperature and pressure, which performance to the amorphous phase after cooling and decompression.In short, we designed a new type of high temperature and high pressure device, and using way of combination of this device and Raman study sanidine. Get information of its high pressure, high temperature, and the combined effect of high temperature and high pressure in situ raman spectrum information. And detect the transform process form crystal phase to the amorphous phase.