SELECTION OF PROTECTIVE COATINGS OBTAINED BY PLASMA-SPRAYING METHOD FOR FOUNDRY INDUSTRY
DOI:
https://doi.org/10.7494/mafe.2017.43.1.51Keywords:
plasma spraying, foundry industry, microstructure, wettabilityAbstract
This article presents results from the studies of protective coatings applied to industrial graphite molds used for the casting of non-ferrous metals. The selection of coatings was based on the results of measurements of surface wettability by liquid copper and microstructure examinations. The study involved industrial graphite molds with single-layer protective coatings of Al2O3 + 30%C and ZrO2-Y2O3 + 30%C as well as two-layer protective coatings of Al2O3 + 30%C /glassy carbon and ZrO2-Y2O3 + 30%C /glassy carbon.
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