EFFECT OF APPLICATION A MIXTURE OF REFRACTORY FILLERS AND ORGANIC ADDITIVES ON THE QUALITY OF PROTECTIVE COATINGS

The paper presents the results of research on the effect of a mixture of different fillers: based on cordierite and talc, cordierite and mullite, as well as cordierite and zirconium silicate on the cavitation resistance of protective coatings. Various coating compositions and production procedures were investigated. Special emphasis in the research was given to the influence of organic additives on the sedimentation stability of the coating. The quality of the coating was tested using the ultrasonic vibration method according to the ASTM G32 standard. Formation and development of surface damage were monitored by scanning electron microscope. Based on the loss of mass and the change in the morphology of the coating surface, the possibility of applying this type of coating for the protection of metal structures in metallurgy and mining was assessed. The special importance of these coatings is their non-toxicity and application of water-based solutions.