MORPHOLOGY AND DIELECTRIC FUNCTIONALITY OF PLASMA ELECTROLYTIC COATINGS ON ALUMINUM ALLOYS

Abstract

The development of plasma electrolyte oxidation of aluminum alloys with the aim of using the dielectric properties of coatings is presented. Investigations of the morphology of oxide coatings formed on alternating current in the regime of an arbitrarily falling power in alkali-silicate solutions are presented. The data on the roughness and dielectric properties of the coating surface are used for joint consideration. In the discussion of the results, the functional tasks of local electrical insulating coatings of the tool of highly efficient processing technologies with the introduction of energy of electric discharges into the cutting zone to maintain the performance of grinding wheels with a diamond-metal composition of the working part were taken into account.

Keywords

• electrolyte
• alkali-silicate solution
• microarc electric discharge
• surface morphology
• surface roughness
• specific volume resistance
• dielectric strength