Method for measuring ablation resistance characteristic of materials

An ablation-resistant and characteristic technology, applied in the field of nuclear fusion, can solve the problems of measurement results influence, self-absorption effect not considered, heavy workload, etc.

Active Publication Date: 2013-06-12
DALIAN UNIV OF TECH
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Problems solved by technology

Disadvantages: The self-absorption effect is not considered, which will affect the measurement results; all spectral lines need to be analyzed, and the workload is relatively large

Method used

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  • Method for measuring ablation resistance characteristic of materials
  • Method for measuring ablation resistance characteristic of materials
  • Method for measuring ablation resistance characteristic of materials

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Embodiment Construction

[0049] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0050] figure 1 Shown is the measuring device used in the present invention, including: vacuum system, laser ablation system, LIBS measuring system, quartz crystal microbalance measuring system;

[0051] Described vacuum system comprises: vacuum chamber 1, vacuum pump group 11, vacuum gauge 14; Vacuum pump group 11 and vacuum gauge 14 are installed in the outer end of vacuum chamber 1; Vacuum chamber 1 is pumped to vacuum state by vacuum pump group 11, and during the experiment Maintain the stability of its vacuum state. The vacuum system is used to form the experimental conditions required for measurement. Measurements in a vacuum environment can reduce the interference of impurities in the air to the LIBS spectral signal, and reduce the relationship between the components in the air and the burned components. The material reaction is etched out to ...

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Abstract

The invention relates to the field of nuclear fusion and discloses a method for measuring an ablation resistance characteristic of materials. According to the method, the laser-induced breakdown spectroscopy (LIBS) and the quartz crystal microbalance (QCM) are combined, wherein the LIBS is used for diagnosing types of species generated by ablation and the percentage of all the species; the QCM is used for calculating total ablation amount, and then, measuring results of the LIBS and the QCM are combined to obtain the ablation rate of all components. According to the method for measuring the ablation resistance characteristic of the materials, by combining the LIBS and the QCM, defects that LIBS quantitative analysis is comparatively difficult and substance distinguishing cannot be performed by the QCM are remedied; the types of species generated by the ablation and the percentage of all the species are diagnosed by using the LIBS, and the total ablation amount is calculated by the QCM; and then, the measuring results of the LIBS and the QCM are combined to obtain the ablation rate of all the components. A feasible detection means is realized for evaluating whether an already used material is suitable for Tokamak stable operations or not and seeking a first wall material which is suitable for the Tokamak stable operations.

Description

technical field [0001] The present invention relates to the field of nuclear fusion, in particular to a method for measuring the ablation resistance of materials. The invention can measure the ablation resistance of materials, and provides a basis for evaluating the used and finding a first wall material more suitable for the stable operation of the Tokamak. testing method. Background technique [0002] In the magnetic confinement nuclear fusion device tokmak, the plasma material is related to the stability of the fusion plasma and the first wall structure material and components are protected from plasma bombardment damage. Its main function is to effectively control the impurities entering the plasma, effectively remove the thermal power radiated to the material surface, and protect other components from being damaged by plasma bombardment during abnormal shutdown. At the same time, plasma-facing materials should be consistent with stack operational lifetime, reliabil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/02G01N21/63G01B7/06
Inventor 丁洪斌李聪吴兴伟张辰飞
Owner DALIAN UNIV OF TECH
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