On the electropolishing and anodic oxidation of Ti-15Mo alloy / Babilas Dorota,Urbanczyk Ewelina,Sowa Maciej,Maciej Artur,Korotin Danila M.,Zhidkov Ivan S.,Basiaga Marcin,Krok-Borkowicz Malgorzata,Szyk-Warszynska Lilianna,Pamula Elzbieta,Kurmaev Ernst Z.,Cholakh Seif O.,Simka Wojciech // ELECTROCHIMICA ACTA. - 2016. - V. 205, l. . - P. 256-265.

ISSN/EISSN:

0013-4686 / 1873-3859

Type:

Article

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 degrees-87.6 degrees) in comparison to the electropolished sample (97.5 degrees). 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 M Omega cm(2)). (C) 2016 Elsevier Ltd. All rights reserved.

Author keywords:

electropolishing; anodic oxidation; titanium alloy; Ti-15Mo; corrosion resistance PLASMA ELECTROLYTIC OXIDATION; METHANOLIC SULFURIC-ACID; SHAPE-MEMORY ALLOYS; TI-MO ALLOYS; ELECTROCHEMICAL-BEHAVIOR; MECHANICAL-PROPERTIES; CORROSION-RESISTANCE; ALCOHOLIC SOLUTION; TITANIA FILMS; SURFACE

DOI:

10.1016/j.electacta.2016.01.21

Web of Science ID:

ISI:000376138600030

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JUL 1
Publisher	PERGAMON-ELSEVIER SCIENCE LTD
Address	THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Language	English
EISSN	1873-3859
Keywords-Plus	PLASMA ELECTROLYTIC OXIDATION; METHANOLIC SULFURIC-ACID; SHAPE-MEMORY ALLOYS; TI-MO ALLOYS; ELECTROCHEMICAL-BEHAVIOR; MECHANICAL-PROPERTIES; CORROSION-RESISTANCE; ALCOHOLIC SOLUTION; TITANIA FILMS; SURFACE
Research-Areas	Electrochemistry
Web-of-Science-Categories	Electrochemistry
Author-Email	dorota.babilas@polsl.pl wojciech.simka@polsl.pl
ResearcherID-Numbers	Cholakh, Seif/M-8221-2016 Kurmaev, Ernst/J-4254-2013 Korotin, Danila/J-4263-2013 Zhidkov, Ivan/L-3543-2013
ORCID-Numbers	Cholakh, Seif/0000-0002-9313-6614 Kurmaev, Ernst/0000-0003-4625-4930 Korotin, Danila/0000-0002-9800-6552 Zhidkov, Ivan/0000-0001-8727-4730 Simka, Wojciech/0000-0002-2648-5523
Funding-Acknowledgement	Russian Foundation for Basic Research {[}13-08-96007]
Funding-Text	The XPS measurements were supported by Act 211 Government of the Russian Federation, agreement No. 02.A03.21.0006, FASO of Russia (theme ``Electron{''} No. 01201463326) and the Russian Foundation for Basic Research (Project 13-08-96007).
Number-of-Cited-References	55
Usage-Count-Last-180-days	11
Usage-Count-Since-2013	75
Journal-ISO	Electrochim. Acta
Doc-Delivery-Number	DM1WW