METHOD OF PRODUCING ION-PLASMA VACUUM-ARC CERAMETALLIC Ti-Ni COATING FOR CARBIDE CUTTING TOOL OF EXPANDED USE Russian patent published in 2017 - IPC C23C14/24 B25B27/14 

FIELD: metallurgy.

SUBSTANCE: precleaning of tool surface and subsequent vacuum-arc coating deposition are carried out in the reaction gas-nitrogen during evaporation of cathodes containing titanium and nickel. Coating deposition is carried out during evaporation of cathodes made of VT1 and Ti-Ni (50 at titanium alloys.% Ni) in the arc current which evaporates cathode from titanium, 120 A and in the arc current which evaporates the cathode from Ti-Ni alloy, 90-110 A, and 100-120 V negative bias voltage fed to the carbide cutting tool. These deposition parameters and used cathode materials allow to implement 3.5-8% (at.) nickel content in the coatings.

EFFECT: increased durability of the carbide cutting tool; expansion of its use both at continuous and interrupted cutting operations; increased turning speed of the processed materials.

9 dwg, 7 ex, 2 tbl