Hanna Pokhmurska

Tailored Surfaces by Means of Thermal Spraying and Post-Treatment

A brief overview of existing methods of post-treatment of thermally sprayed coatings is given and the influence of mechanical and chemical as well as high-energy beam post-treatment methods on the coating microstructure formation and some exploitation properties is described. As a special example, the modification of thermally sprayed coatings on magnesium alloys using electron and laser beams and high-density irradiation of an infra-red beamer for the improvement of wear and corrosion resistance is presented.

Wear and Corrosion Resistance of Electric-ARC Coatings Sprayed from Powder Wires of the Stein-Mesyfil Series

We investigate the influence of the chemical composition and modes of spraying of electric-arc coatings from powder wires of the Stein-Mesyfil series, in particular, 953V, 932V, 954V, and 957V, on their abrasive wear resistance and corrosion characteristics. It is established that all coatings obtained at a current of arc burning of 350 А, have the smallest porosity and largest resistance to abrasive wear resistance, and coatings obtained from 932V and 957V wires are most wear resistant. An influence of the chemical composition and spraying modes on the electrochemical properties of the coatings in a 3% solution of sodium chloride is not found.