High pressure chamber device in small high-pressure experimental device

Abstract

A high pressure chamber device in a small high-pressure experimental device includes an upper alumina pressure drill, a lower alumina pressure drill, a gasket, a sample chamber, an upper tungsten carbide base, a lower tungsten carbide base, molybdenum resistance wires, thermocouples and a power source. The gasket is disposed between the upper alumina pressure drill and the lower alumina pressure drill; the sample chamber is disposed at the center of the gasket; the upper alumina pressure drill and the lower alumina pressure drill are respectively connected with the upper tungsten carbide baseand the lower tungsten carbide base; the molybdenum resistance wire is arranged on both the upper tungsten carbide base and the lower tungsten carbide base; one side of the upper alumina pressure drill and one side of the lower alumina pressure drill are provided with the thermocouples, which are connected to the power source through wires. With the selection of the material of the key component pressure drills, cost of the high pressure chamber can be greatly reduced, which is more conductive to high pressure experiments in a wider range of areas.

Description

technical field [0001] The invention relates to a high-pressure experimental device, in particular to a high-pressure chamber device in a small-sized high-pressure experimental device. Background technique [0002] As a basic thermodynamic parameter in a physical system, pressure has a crucial impact on the structure and properties of substances. It is known from the basic theory of physics that under the action of high pressure, the structure, properties and state of matter will change significantly, and these changes will lead to changes in the physical properties of matter. Various elements will exhibit different valence states under high pressure, and some novel chemical reactions will occur between them. The progress of high-pressure research is inseparable from the development of high-pressure equipment. High-pressure equipment is divided into large-scale pressure devices and small ultra-high pressure devices. The large-scale pressure device mainly includes two-sided...

AI Technical Summary

Problems solved by technology

[0005] The DAC device uses diamond as the anvil, and diamond is the hardest substance in the world. It has an outstanding property of Mohs hardness of 10. As an anvil, it is unparalleled in terms of optical properties and hardness, but the only disadvantage is that it is expensive. , a pair of diamonds with good quality in the experiment cost at least 10,000 RMB

Moreover, in the long-term summary of scientific research, it was found that experimental operators who have not received long-term training did not have enough experience in the process of centering and leveling the diamond anvil, or were not careful enough, and did not align the anvil surface of the diamond as required. Fully leveled, it is easy for the diamond to break during the pressurization process

But debugging the complete centering and leveling of the diamond is a job that requires long-term training. If you use diamond for debugging without experience, there is a high probability that the diamond will be damaged. Once the diamond is a little damaged, the high-pressure experiment cannot be continued, and the pair of diamonds cannot be reused.

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