Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/102248
Title: On the electropolishing and anodic oxidation of Ti-15Mo alloy
Authors: Babilas, D.
Urbańczyk, E.
Sowa, M.
Maciej, A.
Korotin, D. M.
Zhidkov, I. S.
Basiaga, M.
Krok-Borkowicz, M.
Szyk-Warszyńska, L.
Pamuła, E.
Kurmaev, E. Z.
Cholakh, S. O.
Simka, W.
Issue Date: 2016
Publisher: Elsevier Ltd
Citation: On the electropolishing and anodic oxidation of Ti-15Mo alloy / D. Babilas, E. Urbańczyk, M. Sowa, et al. — DOI 10.1016/j.electacta.2016.01.218 // Electrochimica Acta. — 2016. — Vol. 205. — P. 256-265.
Abstract: This paper presents research on modifying the surface of Ti-15Mo alloy using electropolishing and anodic passivation. The electropolishing process was carried out in solutions containing sulfuric acid, ethylene glycol, ammonium fluoride and oxalic acid. Whereas a voltage range from 20 to 100 V and a 1 M orthophosphoric acid solution were used during the anodic passivation. The influence of above mentioned processes parameters on the quality of the obtained oxide layer on Ti-15Mo alloy was investigated. The analysis of Ti-15Mo surface after modification was performed using scanning electron microscopy (SEM), atomic force microscopy (AFM), energy-dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS), ellipsometry, and mechanical tests. Moreover, the corrosion resistance was investigated using a potentiostatic method in Ringer's solution. It was found that electropolishing leads to an increase in the surface homogeneity and to the form of an oxide layer, which consisted of TiO2 and MoO3. Whereas the oxide layers obtained during anodic passivation were characterized by different properties depending on the applied voltage. The anodic passivation at various voltages (20-100 V) increased the surface wettability (94.5°-87.6°) in comparison to the electropolished sample (97.5°). Moreover, the obtained oxide layer after anodization exhibited a high hardness. The electrolytic polishing and anodic passivation of Ti-15Mo also improved corrosion resistance of the alloy in contact with Ringer's solution. The sample anodized at 80 V presented the highest corrosion resistance by the smallest corrosion current density (1.4 nA cm-2) and the highest polarization resistance (37.4 MΩ cm2). © 2016 Elsevier Ltd. All rights reserved.
Keywords: ANODIC OXIDATION
CORROSION RESISTANCE
ELECTROPOLISHING
TI-15MO
TITANIUM ALLOY
ANODIC OXIDATION
ATOMIC FORCE MICROSCOPY
CORROSION
CORROSION RESISTANCE
ELECTROLYTIC POLISHING
ENERGY DISPERSIVE SPECTROSCOPY
ETHYLENE
ETHYLENE GLYCOL
MOLYBDENUM
MOLYBDENUM OXIDE
ORTHOPHOSPHORIC ACID
OXALIC ACID
OXIDATION
PASSIVATION
SCANNING ELECTRON MICROSCOPY
TITANIUM ALLOYS
TITANIUM OXIDES
X RAY PHOTOELECTRON SPECTROSCOPY
X RAY SPECTROSCOPY
CORROSION CURRENT DENSITIES
ELECTROPOLISHED SAMPLES
ENERGY DISPERSIVE X RAY SPECTROSCOPY
ORTHOPHOSPHORIC ACID SOLUTIONS
POLARIZATION RESISTANCES
POTENTIOSTATIC METHODS
PROCESSES PARAMETERS
SURFACE WETTABILITY
MOLYBDENUM ALLOYS
URI: http://hdl.handle.net/10995/102248
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 84973151730
PURE ID: 1031419
ISSN: 134686
DOI: 10.1016/j.electacta.2016.01.218
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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