METHOD OF APPLYING MULTILAYER ION-PLASMA COATING ON STAMP ENGRAVING SURFACE FROM HEAT-RESISTANT STEEL Russian patent published in 2017 - IPC C23C14/06 C23C14/34 C23C14/02 C23C30/00 B82B3/00 

FIELD: metallurgy.

SUBSTANCE: method involves placing a stamp in the vacuum chamber of the installation, creating the required vacuum, ionizing the stamp engraving surface, and then applying a predetermined number of layers of the titanium compounds to the metals and nitrogen. First, a titanium sub-layer or a titanium-based alloy with a thickness of 0.4 to 0.8 mcm is applied, and then heterogeneous layers of the titanium compounds with metals and nitrogen with a thickness of 1.2 to 2.0 mcm each are applied. When applying heterogeneous layers, their formation is alternated at a pressure in the vacuum chamber of the installation of 2⋅10^-2 up to 5⋅10^-2 Pa and at a pressure in the vacuum chamber of the installation of 1⋅10^-1 up to 3⋅10^-1 Pa. For the formation of the titanium compounds with metals, the titanium compounds with the following metals are used: Al, Mo, Zr, V, Si, C or a combination thereof.

EFFECT: reducing costs, increasing the reliability of the coating.

5 cl, 1 ex