Arc Discharge And Glow Discharge

arc discharge and glow discharge.

What is not reflected in the PVD and CVD table is that, because vacuum coating technology is mostly carried out in gas discharge plasma, there are a large number of charged particles in the coating room, so each kind of coating technology skillfully uses electric, magnetic or electromagnetic fields to control the movement of electrons, so that electrons and more gas, more metal atoms produce collision ionization, By increasing the plasma density in the coating space and the overall energy of the film particles, it is easier to react and deposit high-quality hard coatings.

In various ion plating techniques, a metal collides with high-energy electrons in the discharge space in an inelastic manner. The energetic electrons knock the outermost electrons out of the atom to form ions. The ions also combine with electrons to form atoms, giving off the energy absorbed when ionized, in the form of photons, which emit light. The more ionization, the stronger the composite luminescence, arc discharge coating room light intensity is much stronger than glow discharge.

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