Gas diffusion and permeability of quartz glass tube

Gas diffusion and permeability of quartz glass tube
Gas diffusion and permeability of quartz glass tube
There are many irregular voids in the quartz glass tube network structure, so many possible gas diffusion and permeation characteristics of gas atoms of relatively small diameter such as helium, neon and hydrogen in quartz glass tube permeability is relatively large, while the nitrogen and oxygen atoms of gas activity is relatively large, relatively small, even in 600-700oC temperature, diffusion in quartz glass is low, so the quartz glass tube can operate 10-5-10-6mmHg and negative pressure vessels under the conditions of high temperature, can be used in vacuum devices.

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