Characterisation of anodic oxide films on zirconium formed in sulphuric acid: XPS and corrosion resistance investigations / Sowa Maciej,Lastowka Dobrochna,Kukharenko Andrey I.,Korotin Danila M.,Kurmaev Ernst Z.,Cholakh Seif O.,Simka Wojciech // JOURNAL OF SOLID STATE ELECTROCHEMISTRY. - 2017. - V. 21, l. 1. - P. 203-210.

ISSN/EISSN:

1432-8488 / 1433-0768

Type:

Article

Abstract:

Present work describes investigations of a two-step process consisting of galvanostatic anodising in a 1 M H2SO4 solution at 100 mA cm(-2) up to the limiting voltages of 20, 60, 80, 100 and 120 V, directly after which potentiostatic regime was employed and the current was allowed to drop. The total treatment time (5 min) was held constant for all samples. The treatment was carried out to improve the corrosion resistance of zirconium in physiological conditions, which was determined by electrochemical evaluation in Ringer's solution. XPS studies revealed that after anodising sulphur was incorporated into the oxide film in the form of sulphated zirconia. The maximum content of sulphate in the oxide layer was observed after anodising at 80 V. Anodising at higher voltages resulted in formation of coatings with decreasing amount of sulphur. It was found that there is a strong correlation between the sulphur content in the oxide layers and the measured corrosion current density. On the other hand, the pitting corrosion resistance seemed to be unaffected by the presence of S and it was improving with the increasing limiting voltage of the treatment.

Author keywords:

Zirconium; Anodic oxidation; Corrosion resistance; Sulphuric acid; X-ray photoelectron spectroscopy SULFATED-ZIRCONIA; CATALYTIC-ACTIVITY; ANODIZATION; FABRICATION; SURFACES; GROWTH; STATE

DOI:

10.1007/s10008-016-3369-2

Web of Science ID:

ISI:000391390500021

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JAN
Publisher	SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013 USA
Language	English
EISSN	1433-0768
Keywords-Plus	SULFATED-ZIRCONIA; CATALYTIC-ACTIVITY; ANODIZATION; FABRICATION; SURFACES; GROWTH; STATE
Research-Areas	Electrochemistry
Web-of-Science-Categories	Electrochemistry
Author-Email	wojciech.simka@polsl.pl
ORCID-Numbers	Kukharenko, Andrey/0000-0003-3774-6909 Simka, Wojciech/0000-0002-2648-5523 Cholakh, Seif/0000-0002-9313-6614
Funding-Acknowledgement	Polish Ministry of Science and Education {[}DI 2012 024142]; Russian Foundation for Basic Research {[}14-02-00006]; Government of Russian Federation {[}02.A03.21.0006]
Funding-Text	This work was supported by the Polish Ministry of Science and Education under the ``Diamond Grant{''} programme, research project no. DI 2012 024142. XPS measurements were supported by the Russian Foundation for Basic Research (Project 14-02-00006) and Government of Russian Federation (Act 211, agreement No 02.A03.21.0006).
Number-of-Cited-References	28
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	4
Journal-ISO	J. Solid State Electrochem.
Doc-Delivery-Number	EG9PF