Abstract
Zirconia coatings were formed on zirconium-niobium alloy (1 % Nb) by plasma electrolytic oxidation (PEO) in silicate-hypophosphite electrolyte with Y2O3 nanopowder additives. The structure, elemental composition and layer-by-layer phase composition of the PEO coatings were investigated using methods of scanning electron microscopy (SEM), X-ray microanalysis, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS). PEO coatings formed in an electrolyte with 6 g/L Y2O3 nanoparticles additive contain predominantly tetragonal t-ZrO2 phase and have the superficial layer mainly consisting of electrolyte components and their compounds, including yttria and yttrium silicate. Moreover, stabilization of the t-ZrO2 phase in the PEO coating leads to increase its hardness up to 4.6 GPa.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
