A device for measuring hydrogen diffusion and permeability in tritium-resistant coatings

Abstract

The invention belongs to a hydrogen measuring device and particularly relates to an accurate measuring device of hydrogen diffusion and permeation characteristics in a coating. The tritium-blocking coating hydrogen diffusion and permeation performance measuring device comprises a sample chamber, the sample chamber comprises an outer vacuum chamber and an inner vacuum chamber, the sample chamber isconnected to a water cooler, the water cooler is used for cooling the sample chamber, the inner vacuum chamber of the sample chamber is respectively communicated with an inner vacuum chamber molecular pump and an inner vacuum chamber mechanical pump through valves, and the inner vacuum chamber molecular pump and the inner vacuum chamber mechanical pump are used for vacuumizing the inner vacuum chamber. The outer vacuum chamber of the sample chamber is respectively communicated with an outer vacuum chamber molecular pump and an outer vacuum chamber mechanical pump through a quadrupole mass spectrometer. The outer vacuum chamber molecular pump and the outer vacuum chamber mechanical pump are used for vacuumizing the outer vacuum chamber. The quadrupole mass spectrometer is respectively communicated with an industrial control computer and an ion pump. The sample chamber is communicated with an air chamber through a standard leak. The measuring device can accurately control the temperature of the test sample and complete the test at different temperatures.

Description

technical field [0001] The invention belongs to a hydrogen measuring device, in particular to an accurate measuring device for hydrogen diffusion and penetration characteristics in a coating. Background technique [0002] Due to the small atomic radius, hydrogen and its isotopes permeate rapidly in many materials. No matter the atomic energy reactor, the controllable thermonuclear reaction device, or the storage and processing system of thermonuclear fuel, there is a problem of preventing hydrogen permeation. In a fusion reactor, a large number of components and systems will work in a tritium-containing environment. The penetration of hydrogen and its isotopes is a critical issue, which involves many aspects, such as the effective use of tritium, hydrogen and tritium. The mechanical properties of structural materials are reduced (hydrogen embrittlement), the safety of system operation and environmental safety, etc. The currently internationally recognized solution is to pr...

AI Technical Summary

Problems solved by technology

In addition, the sample chamber and connecting pipes are entirely in the heating device, and the multiple long-term high-temperature environments also accelerate the aging of the sample chamber and connecting pipes, shortening their service life

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