Assessment of the physicochemical properties of SiO2 coating produced by EPD method on NiTi alloy substrate

This dataset contains the results of surface characterization of NiTi alloy samples and NiTi samples modified with an SiO₂ coating deposited using the Electrophoretic Deposition (EPD) method. The work is dedicated to the development of surface engineering solutions for cardiovascular implants, particularly occluder systems for atrial septal defect (ASD) closure. The aim of the study was to evaluate the morphology of the surface of the coating and its effect on the corrosion behaviour of the NiTi alloy.Sample Preparation:Base material: NiTi (Nitinol, shape memory alloy)Surface modification: EPD coating of SiO₂Experimental Techniques:Scanning Electron Microscopy (SEM)Energy-dispersive X-ray spectroscopy (EDS)X-ray diffraction (XRD)Dynamic light scattering (DLS)Zeta potentialFourier Transform Infrared Spectroscopy (FTIR) Tribology Surface topographyScratch testPotentiodynamic polarisation (PDP)Electrochemical impedance spectroscopy (EIS)Contact angle measurements (wettability)Data Structure and Content:The dataset is organized into folders corresponding to different experiments, and then to the analytical techniques and sample types used.Instrument or software-specific information needed to interpret the data:Energy-dispersive X-ray spectroscopy (EDS) - AZtecOne Software (Oxford instruments, Oxford, UK)Surface topography - Mountains® software (Digital Surf, Besançon, France)Tribology - Tribometer software (Anton Paar, Graz, Austria)Corrosion studies: Potentiodynamic polarisation (PDP) and Electrochemical impedance spectroscopy (EIS) - VersaStudio 2.62.2 software (AMETEK, Berwyn, PA, USA)This dataset was updated on 2026-03-20Files updated: readme.txt; Investigation_of_the_properties_of_SiO2_coatings.zip; Investigation_of_the_properties_of_SiO2_coatings_at_different_pH_values.zipThe “Investigation of the properties of SiO₂” folder has been created and contains files with experimental data from the previous version of the repository. The repository has been expanded to include new data in the “Investigation of the properties of SiO₂ coatings at different pH values” folder, which contains data on the new results from a subsequent experiment. The readme.txt file has been updated to include a description of the dataset.Project information:The project was funded by the National Science Centre, Poland, allocated based on decision No. 2023/49/B/ST11/03301