Synthesis and characterisation of cordierite - based protective coating

Abstract

The paper investigates the composition and procedures for the production of refractory coatings based on cordierite for the protection of parts of equipment in metallurgy and mining. An ultrasonic vibration method with a stationary sample according to the ASTM G32 standard was used to determine the resistance properties of the obtained protective coatings. The aim of the study was to determine the quality of coatings and the possibility of application for the protection of metal surfaces in conditions of cavitation, wear and corrosion. The change in the mass of the samples as a function of cavitation time was monitored. Cavitation velocity was determined as an indicator of coating resistance under cavitation loads. The occurrence and development of coating surface damage were monitored using a scanning electron microscope. Based on the value of cavitation velocity and analysis of surface damage morphology, cavitation resistance of the coating was determined. The results showed a satisfactory degree of resistance to cavitation of the tested refractory coatings based on cordierite and the possibility of their application for the protection of parts of equipment that will be exposed to cavitation loads during exploitation.