CATHODE OF ELECTRIC ARC EVAPORATOR Russian patent published in 2003 - IPC

FIELD: equipment for applying coatings, possibly onto cutting tools, with use of electric current arc in atmosphere of chemically active gases. SUBSTANCE: cathode is in the form of cylinder having turnings in the form of circular cylinder on its ends. In evaporated end of cathode there are additional dead openings concentric relative to cylindrical surface. Round rods, for example of chrome, molybdenum, zirconium, hafnium or niobium are pressed-in to said dead openings. Ratio of diameter of said rods to diameter of cathode is 0.046-0.09. Total surface area of ends of rods consists 40-50% of surface area of evaporated end of cathode. EFFECT: enlarged manufacturing possibilities due to applying multicomponent coatings of predetermined physico-chemical composition with uniform thickness. 2 cl, 2 dwg, 4 tbl