An open heating device for in-situ testing of synchrotron radiation

Abstract

The invention relates to an open heating device for a synchrotron radiation in-situ test. Main points are that the middle part of a heat conducting block is provided with an open sample chamber, the heat conducting block is internally provided with a plurality of inert gas ventilation pipes outside the open sample chamber, the inert gas ventilation pipes sequentially penetrate, one ends of the gas ventilation pipes are open, the tail parts of the other ends of the inert gas ventilation pipes are communicated with the open sample chamber, and side surface of the heat conducting block are additionally provided with heating pieces respectively. Therefore, a sample can be isolated from the air without sealing the sample chamber, the sample chamber can be directly placed in the air, the sample is not oxidized in the heating process, the test device can be miniaturized, test conditions such as the temperature, the stress, a magnetic field and the like are controlled conveniently, a synchrotron radiation test device can be greatly simplified, and the test efficiency and the test precision are significantly improved, ray inlet and outlet windows are not required to be sealed, absorption and disturbance imposed on rays by a ray window sealing material and generation of a diffraction peak are eliminated, and the utilization ratio of rays is improved. In addition, the open heating device provided by the invention is convenient in test control, saves time and trouble, and can greatly improve the efficiency.

Description

technical field [0001] The invention relates to a heating device for in-situ testing of synchrotron radiation, in particular to an open heating device for in-situ testing of synchrotron radiation. Background technique [0002] New materials and new technologies are the key areas of today's science and technology. The characterization methods relied on by the basic research of materials science supporting the development of new materials and new technologies have gradually shifted from the steady-state microscopic technology in the past to dynamic microstructure monitoring, and the focus of research has gradually developed from the steady-state characteristics of materials to the concern about Their dynamics during manufacture and in use. Synchrotron radiation in-situ testing technology is developing rapidly and is an advanced technology suitable for material preparation process and dynamic process monitoring under use state. People have developed the synchrotron radiation ...

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Problems solved by technology

However, this method of using a closed cavity to isolate the sample from the air requires that the sample cavity be strictly sealed to prevent any leakage. It not only requires high processing requirements for the device, but also needs to be equipped with a special vacuum pump and cooling system. device, making the device structure complex

This kind of airtight heating device has seriously affected the efficiency and accuracy of synchrotron radiation experiments. On the one hand, due to the limitation of the high temperature resistance of the ray window sealing material, it is impossible to realize the miniaturization of the synchrotron radiation in-situ test device, which requires the temperature control device to operate at the same time. The installation of the radiation station and the replacement of samples have brought difficulties; on the other hand, in order to realize the sealing of the sample cavity, the radiation window must be sealed. So far, there is no window material that is completely transparent to the radiation, and the window sealing material will inevitably affect the radiation. Generate absorption and interference diffraction peaks; moreover, due to the airtightness of the sample cavity, it brings difficulties to the application and control of test parameters such as external stress and magnetic field during the test

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