METHOD OF ALUMINIUM-CONTAINING PROTECTIVE COATING APPLICATION TO METAL PART SURFACE

摘要

FIELD: metallurgy.SUBSTANCE: invention refers to method of application of protective coating containing aluminium and zirconium and/or hafnium, to the surface of metal turbine aggregate parts. Parts processed and cementing medium out of aluminium alloy are placed into chamber and processed at 950 to 1200°C in atmosphere containing active gas. Cementing medium is made of aluminium alloy containing additionally at least one reactive element - zirconium and/or hafnium. When active gas reacts with the cementing agent, halides of aluminium and the above mentioned reactive element are produced and decomposed upon contact with parts, when the reactive element is deposited on the parts together with aluminium.EFFECT: protection of parts operating at high temperatures from erosion and corrosion.10 cl, 1 dwg, 2 tbl