At repair enterprises, various metal-polymer materials are used to restore the interfaces. Metal-polymer materials can be filled with the following components: steel, bronze, aluminum, titanium. The main advantages of metal polymers are their resistance to negative environmental influences, mechanical friction and high temperatures. (Research purpose) The research purpose is in analyzing the possibilities of metal-polymer materials for effective use in the restoration of machine parts and to give suggestions for improving their physical and mechanical properties during the restoration work. (Materials and methods) Authors studied metal-polymer materials of well-known companies: "Belzona" (USA), "Durmetal" (Switzerland), "Diamant" (Germany), "Loctite" (USA), Chester Molecular (Poland). The article presents the data on their use in the restoration of various parts. The metal polymer materials of foreign companies are characterized by stable quality and high physical and technical characteristics; domestic materials are still inferior to imported ones due to the low quality of the incoming components. (Results and discussion) The main property of coatings is the adhesive strength, which largely determines the resource of the restored part. The main factors that affect the adhesive strength are described in the article. It is possible to significantly increase the adhesive strength of the coatings due to the preliminary electric spark treatment of the worn part. The article presents data on the effectiveness of electric spark coatings as an independent technological process in the restoration of the part. The use of a combined technology of electric spark processing with subsequent application of metal-polymer materials provides undeniable advantages in the restoration of parts. (Conclusions) To improve the physical and mechanical properties of coatings, it is advisable to combine the technology of electric spark processing with the use of metal-polymer coatings. This will expand the possibilities of using part recovery technologies.
Investigation of physical and mechanical properties of coatings based on intermetallics of the Ti-Al system obtained in acetylene environment from vacuum-arc discharge plasma
