Apparatus and process for coating workpieces by arc discharge me

Details Apparatus and process for coating workpieces by arc discharge me Apparatus and process for coating workpieces by arc discharge me

1990-09-14

1992-10-13

Weisstuch, Aaron

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

20429841, 427580, C23C 1432

Patent

active

051548119

ABSTRACT:
In a typical arc discharge ion plating apparatus, ionbombardment heating is used for preheating of the workpieces before coating. While this method is simple and effective for heating, such method has many essential problems for vacuum coating films. To improve the vacuum arc discharge coating process, a heating device is provided in the vacuum chamber with the heating device being used instead of ionbombardment heating so that, prior to the vacuum coating, the workpiece is heated up to a temperature in a range of 0.3 to 0.5 of an absolute melting temperature of the coating material of the cathode.

REFERENCES:
patent: 4461799 (1984-07-01), Gavrilov, et al.
patent: 4511593 (1985-04-01), Brandolf

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