In Reply to: Hollow cathode discharge(HCD) technology posted by Martin on 03/05/00 at 3:14 AM:
The two major ion plating techniques are hollow cathode and cathodic arc. Both are heavily used in hard-coating of machine tools.
hollow cathode advantages:
1) smoother film than cathodic arc for any given deposition rate
disadvantages compared to cathodic arc:
1) power supply and machine design is more complicated
2) Process parameter control is more complicated
3) for any given chamber size, the batch through-put is less
Cathodic arc advantages:
1) more simple control of process parameters
2) power supply and machine design is more simple
3) For any given chamber size, the batch through-put is greater
Cathodic arc disadvantages relative to hollow cathode:
1) Macroparticles - results in rougher films than in the case of hollow cathode deposition