A method for increasing heat resistance of articles made of titanium, Ti-Al intermetallic alloy, heat-resistant steel or heat resistant nickel-based alloy, by ion-plasma deposition, forming on said article triple-layer coating, where the method includes the following consequtive steps: (i) insertion of said article in a vacuum chamber of an equipment, designed for depositing of strengthening coatings under vaccum conditions, (ii) evacuation of the vacuum chamber of the equipment, (iii) optionally - cleaning of the article and heating in the vacuum chamber of the equipment, (iv) depositing of intermetallic TiAl or Ti 3 Al layer with atomic aluminum content 40-75% on the article by titanium and aluminum evaporation or sputtering in an inert gas atmosphere, (v) depositing of a conglomerate coating containing a nitrogen-doped intermetallic TiAl, Ti 3 Al and nitrides (TiAl)N with atomic aluminum nitride content 30-70% on the article by titanium and aluminum evaporation or sputtering in an inert gas and nitrogen atmosphere, (vi) depositing of nitride (TiAl)N layer with atomic aluminum content in metallic component from 40 to 70% on the article by titanium and aluminum evaporation or sputtering in an inert gas and nitrogen atmosphere, wherein depositing of the three layers is performed preventing or controlling the droplet phase by use of a magnetron or other metal evaporation or sputtering sources, which do not form droplet phase, or by use of a screen installed between an electric arc evaporator and the article, on which the coating is being applied, where titanium and aluminum evaporation or sputtering time is chosen such, that the thickness of the intermetallic layer is not more than 2 μm, the thickness of the conglomerate layer is not more than 10 μm and the thickness of the nitride layer is not more than 1 μm. (i) insertion of said article in a vacuum chamber of an equipment, designed for depositing of strengthening coatings under vaccum conditions, (ii) evacuation of the vacuum chamber of the equipment, (iii) optionally - cleaning of the article and heating in the vacuum chamber of the equipment, (iv) depositing of intermetallic TiAl or Ti 3 Al layer with atomic aluminum content 40-75% on the article by titanium and aluminum evaporation or sputtering in an inert gas atmosphere, (v) depositing of a conglomerate coating containing a nitrogen-doped intermetallic TiAl, Ti 3 Al and nitrides (TiAl)N with atomic aluminum nitride content 30-70% on the article by titanium and aluminum evaporation or sputtering in an inert gas and nitrogen atmosphere, (vi) depositing of nitride (TiAl)N layer with atomic aluminum content in metallic component from 40 to 70% on the article by titanium and aluminum evaporation or sputtering in an inert gas and nitrogen atmosphere, wherein depositing of the three layers is performed preventing or controlling the droplet phase by use of a magnetron or other metal evaporation or sputtering sources, which do not form droplet phase, or by use of a screen installed between an electric arc evaporator and the article, on which the coating is being applied, where titanium and aluminum evaporation or sputtering time is chosen such, that the thickness of the intermetallic layer is not more than 2 μm, the thickness of the conglomerate layer is not more than 10 μm and the thickness of the nitride layer is not more than 1 μm.