Papers by Author: Hanna Pokhmurska

Abstract: This paper present the result obtained from new experimental STEIN-MESYFIL 953 V; STEIN-MESYFIL 954 V coatings. The surfacing material was wires of 1.6 mm diameter. The tests aimed at determining wear resistance of coatings sprayed on steel substrate. The investigation shows that the tribological behaviour of new experimental thermal arc sprayed coatings is greatly affected by its microstructural constituents such as porosity, oxide inclusions, and microhardness of coatings. Results show that increasing porosity of coatings twice, it doubles the mass loss. Results for thermal sprayed coatings of all experiments showed their high wear resistance and are discussed.

Abstract: 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.