Abstract: The performance of steel products with protective coatings in corrosive environments is determined by the properties of the surface layers. In operation, sheet steel was processed in zinc SHS-blends. Zinc plating in SHS- blends is a combination of gas-phase and liquid processes. The microhardness of the coatings was 3500-5600 MPa. With increasing zinc temperature, the hardness of the layer increased to 6000 MPa, which corresponds to the microhardness of the δ1 phase. Investigation of the microstructure of the zinc coating showed that the G-phase is in the form of a very narrow dark band on the steel surface. The coating is dense with very small porosity. An increase in the corrosion resistance in a 3% NaCl solution by 25-30% compared to the galvanic galvanizing of the sheet steels.
Authors: Borys Sereda, Dmytro Sereda, and Irina Sereda
Keywords: zinc coatings, corrosion, self propagating high-temperature