Abstract
In this study, the effect of the applied potential on nano-particle formation during plasma electrolytic oxidation (PEO) was investigated. A Ti-6Al-4 V ELI disk was used as the substrate for PEO. Using a pulsed DC power supply, voltages of 180, 280, and 380 V were applied for 3 min to the substrate in an electrolyte containing an aqueous solution of Ca and P. The morphology and crystalline structure of the PEO-treated surface were studied using X-ray diffraction, field-emission scanning electron microscopy, and nanoindentation testing. When the lowest voltage was applied, some partially formed pores were observed on the PEO-treated surface. With increasing applied voltage, larger and more uniform pores were formed. However, when the voltage was too high, cracks appeared around the formed pores. The crystallite size also increased with an increase in the applied voltage; however, microcracks were generated on the PEO surface when the applied voltage exceeded a certain value.
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The data presented in this study are available on request from the corresponding author. The data are not publicly available as the data also forms part of an ongoing study.
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This research was supported by NRF: 2021R1A4A1030243.
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CSS: formal analysis, writing, data collection, data analysis, data interpretation, SRL: data analysis, data interpretation, HCC: review and editing, funding acquisition, study design, data collection, data analysis, data interpretation, resources, supervision.
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Seo, CS., Lee, SR. & Choe, HC. Phenomena of nano-particle formation in the plasma electrolytic oxidation process according to applied potentials. Appl Nanosci 12, 3337–3342 (2022). https://doi.org/10.1007/s13204-022-02683-4
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DOI: https://doi.org/10.1007/s13204-022-02683-4