The Effect of Sodium Silicate Concentration on the Properties of the Coating Formed on Pure Zirconium by Microarc Oxidation Coating Technique
作者： Y. Gencer , M. Tarakci , S. Cengiz , K.O. Gunduz
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.445.637
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摘要: In this study, zirconium oxide coatings were formed on pure by microarc oxidation technique with the electrolytes containing KOH and different amounts of sodium silicate (0-40 gr/lt) for same coating duration 2 hours. The microstructure, surface roughness, phase content chemical composition characterized using scanning electron microscopy, profilometery X-ray diffractometry. It was found that consist monoclinic ZrO2 (m-ZrO2) tetragonal (t-ZrO2) phases addition increasing concentration in electrolyte increases amount t-ZrO2 phase. well adhered to Zr substrate some cracks porosities all concentrations silicate. thickness roughness increased electrolyte. A glaze like Si rich structure its increase rate evident outermost region coating.
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