Surface Modification of Products by Plastic Deformation and the Application of Functional Coatings

Resumo

Results are presented from studies of the effect of certain processing factors on the strengthening, reconditioning, and protection of surfaces through the application of coatings by friction cladding. It is established that the use of an electric current speeds up the process, significantly increases the thickness of the coating, and improves its ductility. Combination treatment that entails knurling followed by the application of a functional coating with a flexible tool makes it possible to increase the diameter of a worn part and form an ultrafine-grained structure in its surface layer as a result of intensive plastic deformation.