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Title: | Real-time imaging, spectroscopy, and structural investigation of cathodic plasma electrolytic oxidation of molybdenum | Authors: | Stojadinović, Stevan Tadić, Nenad B. Šišović, Nikola M. Vasilić, Rastko |
Issue Date: | 21-Jun-2015 | Journal: | Journal of Applied Physics | Abstract: | In this paper, the results of the investigation of cathodic plasma electrolytic oxidation (CPEO) of molybdenum at 160V in a mixed solution of borax, water, and ethylene glycol are presented. Real-time imaging and optical emission spectroscopy were used for the characterization of the CPEO. During the process, vapor envelope is formed around the cathode and strong electric field within the envelope caused the generation of plasma discharges. The spectral line shape analysis of hydrogen Balmer line Hβ (486.13nm) shows that plasma discharges are characterized by the electron number density of about 1.4 × 1021m-3. The electron temperature of 15000K was estimated by measuring molybdenum atomic lines intensity. Surface morphology, chemical, and phase composition of coatings formed by CPEO were characterized by scanning electron microscopy with energy dispersive x-ray spectroscopy and x-ray diffraction. The elemental components of CPEO coatings are Mo and O and the predominant crystalline form is MoO3. |
URI: | https://physrep.ff.bg.ac.rs/handle/123456789/1054 | ISSN: | 0021-8979 | DOI: | 10.1063/1.4922870 |
Appears in Collections: | Journal Article |
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