Electrode type glow discharge method and apparatus

Details Electrode type glow discharge method and apparatus Electrode type glow discharge method and apparatus

1975-03-03

1977-06-21

Vertiz, O. R.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

C23C 1500

Patent

active

040309967

ABSTRACT:
An electrode type glow discharge method and apparatus, such as that used for sputtering material from a cathode to provide a coating or the like on materials such as a substrate or substrates. Several exemplary embodiments are disclosed involving various combinations of constructural features including a flanged or spool type cathode, anode placement with respect thereto, provision of internal and/or external magnetic fields with field lines close to and substantially parallel with the barrel of the cathode, insulator placement, efficient cooling for anode and cathode, and the like. Furthermore, the assembly is constructed in a manner such that the same can be readily disassembled for enabling change of cathode materials and for cleaning cooling fluid passageways of the cathode and anode. Embodiments are described wherein at least a portion of the cathode may be in the form of a continuously moving member, such as a wire. The various constructural features enable apparatus to be provided which can create stable and uniform plasmas confined and controlled volume while operating at relatively low pressures with relatively low operating voltages.

REFERENCES:
patent: 3507774 (1970-04-01), Muly
patent: 3516920 (1970-06-01), Muly
patent: 3616450 (1971-10-01), Clark
patent: 3711398 (1973-01-01), Clark

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