Peculiarities of the 'brass' coating formation applied by gas-dynamic spraying

A research of the “brass” type coating structure generation process, obtained by gas-dynamic spraying from a particulate mixture of copper, zinc and corundum. The formation mechanisms of the phase and chemical composition of the obtained coating are determined. During the coating formation, mass-transfer of zinc microvolumes by corundum particles occurs and their interstitial dissolution into copper particles, while diffusion processes occur by the motion of vacancies, of copper to zinc with the formation of intermetallic compounds.