Directly-heating type expansion high-pressure synthesis equipment

Abstract

Directly-heating type expansion high-pressure synthesis equipment comprises an alloy steel cylinder block. A ceramic insulation pipe identical with the axial direction of the alloy steel cylinder block is arranged in the center of the alloy steel cylinder block, a high-pressure column is arranged in the ceramic insulation pipe, the middle position of the high-pressure column is disconnected, hard alloy blocks are arranged on the two sections, a sample synthesis cavity is formed between the two hard alloy blocks, a metal heating ring is arranged on the inner wall of the part, in the sample synthesis cavity, of the ceramic insulation pipe, end hard alloy is arranged at the two ends of the high-pressure column, each piece of end hard alloy is connected with one end of a wire channel, and the other ends of the wire channels are connected to the outer portion of the alloy steel cylinder block. The coefficient of thermal expansion of the high-pressure column is larger than that of materials of the alloy steel cylinder block, and thus at a high synthesis temperature of the materials, the materials have a high-pressure environment in the synthesis process due to the thermal expansion of the high-pressure column; the directly-heating type expansion high-pressure synthesis equipment has the outstanding advantages of being reasonable in structure, controllable in synthesis heating temperature and synthesis pressure of the materials, easy to operate, adjustable in pressure, safe to use, low in equipment cost, long in service life and the like.

Description

technical field [0001] The invention belongs to the field of high-pressure synthesis equipment, is suitable for high-pressure synthesis of different materials at a certain temperature, and particularly relates to a direct heating type expansion high-pressure synthesis equipment. Background technique [0002] At present, common static high-pressure technical equipment mainly includes high-pressure equipment such as six-sided top press and anvil high-pressure device. The six-sided top press of ultra-high pressure synthesis equipment has many advantages, such as simple equipment structure, easy synthesis operation, and good static pressure performance. However, with the development trend of large-scale presses, the whole machine is relatively large, and the investment cost has also increased significantly. In addition, the structure of the pressure head of the six-sided press determines that the six-sided press cannot be infinitely compressed, that is, the thermal compression ...

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Problems solved by technology

However, with the development trend of large-scale presses, the whole machine is relatively large, and the investment cost has also increased significantly.

In addition, the structure of the pressure head of the six-sided press determines that the six-sided press cannot be infinitely compressed, that is, the thermal compression stroke is small

[0003] The anvil high-pressure device is mainly diamond anvil technology. Its biggest advantage is that the pressure generated can reach tens or even hundreds of GPa. However, its fatal weakness is that the synthesis chamber is small, and the general sample synthesis size is less than 1mm. 3

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