Obtaining and Analyzing the Al2O3-ZrO2 Ceramic Layers on Metallic Substrate

Obtaining and analyzing the al 2 O 3 -zrO 2 CeramiC layers On metalliC substrate in this case ceramic layers from Metco zro 2 and al 2 o 3 powders mixture (25/75; 50/50 and 75/25) were obtained through atmospheric plasma spraying (aPs) after five passes on low carbon steel substrate. the sample surfaces mechanically grinded (160-2400) before and after ceramic layer deposition. Powder's mixtures and the surface of ceramic thin layers were analyzed through: scanning electron microscopy (seM). in order to understand the effect of surface wettability of the ceramic layers, before and after grinding the surface, three different liquids were used. experimental results confirm the modification of the steel substrate surface characteristic from hydrophilic to hydrophobic when the ceramic layer was deposited. surface free energy of hydration increases for all the samples with zirconia percentage addition before polishing process.