Four-axis linkage pressurized equipment based on diamond anvil cell press

Abstract

The invention provides four-axis linkage pressurized equipment based on a diamond anvil cell press. The situation can be achieved through the following technical scheme that four motors are utilized to link to rotate a pressurized bolt simultaneously, the same torque is input to apply hydrostatic pressure on a testing sample, the disadvantageous factors on the sample caused by non-uniform pressurein a material step-by-step pressurizing mode are overcome, a sample cavity is protected, and the experimental success rate is improved. The equipment is composed of a pressure sensing module, a pressurizing module, a machine frame and a control system; the machine frame is composed of a polish rod, a bearing plate and a bearing; the pressure sensing module comprises a servo motor, a lead screw and a lead screw nut; the pressurizing module comprises four stepping motors, an internal hexagonal wrench and four sets of gear pairs; and the control system controls the pressure sensing module and the pressurizing module. Compared with the prior art, the equipment has the advantages that the equipment achieves simultaneous precession of diamond anvil cell press bolts, the unfavourable problems such as sample cavity shrinkage, displacement, sample side overflow and diamond damage caused by non-uniform pressure in the traditional manual pressurization process are avoided, and the reliability ofthe experiment is improved.

Description

technical field [0001] The invention relates to a four-axis linkage pressing device based on a diamond counter-anvil press. Background technique [0002] Under pressure, many properties of matter will change, and the decisive condition for conducting material pressure environment experiments is the pressure generating device, and the diamond anvil press (DAC) is the pressure (especially hydrostatic pressure) generated by the current material research field. One of the necessary equipment. DAC is designed according to the working principle of "opposite anvil" proposed by physicist Bridgman. Using the high hardness of diamond and its good transparency to various electromagnetic radiation, it can realize simultaneous pressurization, observation and measurement in material pressure environment tests. It is therefore a key device for the study of the structural properties of materials under pressure. [0003] The working principle of DAC is to squeeze the experimental sample pl...

AI Technical Summary

Problems solved by technology

However, in the process of pressurization, the bolts are often screwed in inconsistently, resulting in uneven pressure, deformation of the sample chamber and side overflow of the sample due to extrusion. When the pressure is too high, the diamond is broken due to excessive internal stress. If it happens, the time, manpower, and financial resources consumed by the failure of the experiment are huge

However, due to the small number of experiments, there is currently no pressurized equipment to improve the success rate of experiments

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