System for measuring wettability of high-temperature and high-chemical-activity liquid metal lithium

Abstract

The invention discloses a system for measuring the wettability of high-temperature and high-chemical-activity liquid metal lithium. The system comprises a vacuum chamber, a vacuum air-extraction and measurement system, a sample table, a heating system, a sample driving system, a liquid lithium dropping-in system, a light source, a camera and an image processing system. The oxidization denaturation of the surface of the liquid lithium is stopped in a high-vacuum environment; the liquid lithium dropping-in system with ingenious design implements dropping-in of the liquid lithium; a heating wire and a temperature measurement system are arranged on the sample table in a sheathed manner, so that a requirement on the measurement of the wettability of the high-temperature liquid lithium is met; a contact angle of the liquid lithium on a substrate is measured by an image analysis method and through a programmed Matlab batch processing program. The system provided by the invention can be used for quickly, economically and effectively testing the wettability of the high-temperature and high-chemical-activity liquid metal lithium to the surface of the substrate and supplies excellent experiment and data accumulation to possible application of a first wall of the liquid lithium to a future fusion reactor.

Description

technical field [0001] The invention relates to the field of fusion reactors, in particular to a measuring system for the wettability of liquid metal lithium with high temperature and strong chemical activity. Background technique [0002] With the continuous upgrading of fusion devices, the high thermal load of the plasma first wall (PFC) is increasing, and the interaction between the plasma and the first wall is getting stronger and stronger, and the damage and corrosion of the first wall caused by this will also be intensified. . In order to withstand the bombardment of high-temperature plasma, reduce the radiation damage on the surface of the first wall, prolong the service life of the first wall, reduce impurity radiation and improve plasma performance, it is necessary to study a new type with strong thermal load output capability. , and the first wall capable of self-healing. [0003] Compared with other first-wall materials, Lithium has greater advantages, that is, ...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a measurement system for the wettability of liquid metal lithium with high temperature and strong chemical activity, so as to solve the problems of the wettability test of liquid metal lithium with high temperature and strong chemical activity in the prior art

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