COATING METHOD

摘要

The inventive method relates to the application of metallic coatings on surfaces of articles and can be used for producing and repairing pressurised articles or articles which have high corrosion resistance, heat resistance a nd other qualities. The inventive method consists in pre-heating compressed air to a temperature of 400 ~C-700 ~C, forming a high-speed airflow in a supersonic nozzle, accelerating up and applying powder material on the surfa ce of article. Said powder material is embodied in the form of a mechanical mixture of metallic powders of at least two metals one of which is a zinc powder corresponding to 20-60 % of the total weight of the metallic powder. The zinc and compressed air heated to a specified temperature assure high performance of the method and make it possible to produce coatings exhibitin g a low gas permeability and a high adhesion to a bottom layer.