In the course of the conducted studies, the microhardness of both the base metal and the boundaries of the fusion and deposited protective coating were evaluated. Attention is paid to the factors influencing the microhardness level depending on the height of the protective coating of the sample. To visualize the collected data, diagrams were created illustrating the distribution of microhardness in the source material and the protective layer obtained using supersonic gas-powder surfacing.

Keywords: deposited layer, supersonic gas-powder surfacing, fusion boundaries, microhardness

Studies have been carried out to determine the microhardness of the base metal, the microhardness at the fusion boundary and the deposited coating. The influencing factors of the value of the height of the protective coating of the sample on the value of microhardness are considered. Graphs of the distribution of microhardness in the base metal and the protective coating of samples by gas-powder surfacing are presented.

Keywords: microhardness, protective coatings, gas-powder surfacing, fusion boundaries