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The paper describes the synthesis of a set of new 2,3-dihydroimidazo[1,2-a]pyridinium bromides which demonstrate antibacterial properties against sulfatereducing bacteria of Desulfomicrobium and Desulfovibrio strains and inhibit their functioning in the binary culture under the steel microbial corrosion. The compounds demonstrate antibiofilm and anticorrosive properties in the medium with sulfate-reducing bacteria, steel anticorrosion rate is up to 70.6 %.

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The article presents an analysis of the formation parameters of the microrelief of artistic casting. The direction for solving particular issues of improving the castings quality with high requirements for the accuracy of the surface relief is shown.