| 摘要 |
FIELD: systems for applying coatings in vacuum, possibly protective coatings in machine engineering and machine tool making industry branches. ^ SUBSTANCE: electric-arc generator of plasma metal flows includes cooled anode and cathode; cathode holder; igniting electrode, stabilizing solenoid arranged on outer surface of cooled anode; duct for supplying reaction gas, focusing solenoid and additional anode. Focusing solenoid is arranged on outer surface of additional anode. Cathode holder includes electrically insulated sleeve of magnetically soft material whose outer diameter is equal to diameter of end working portion of cathode mounted with gap relative to cooled anode. Invention prevents penetration of cathode holder material into coating, lowers micro-drop and vapor phase creation at time moments of turning off electric arc, increases ionization degree of plasma flow of metal. ^ EFFECT: improved quality, enhanced adhesion strength of coating. ^ 1 dwg, 1 tbl |
