Characterization of passive films formed on titanium during anodic oxidation

Wojciech Simka; Andrzej Sadkowski; Magdalena Warczak; Aleksander Iwaniak; Grzegorz Dercz; Joanna Michalska; Artur MacIej

doi:10.1016/j.electacta.2011.07.129

Characterization of passive films formed on titanium during anodic oxidation

Wojciech Simka
, Andrzej Sadkowski
, Magdalena Warczak
, Aleksander Iwaniak
, Grzegorz Dercz
, Joanna Michalska
, Artur MacIej

Institute of Physical Chemistry of the Polish Academy of Sciences
University of Silesia in Katowice

Research output: Contribution to journal › Article › peer-review

97 Citations (Scopus)

Abstract

The purpose of the study is to characterize the passive films formed on titanium during anodic oxidation in solutions of osteoinductive components: calcium cations and phosphate anions and to determine the electrochemical characteristics of the so modified titanium. Anodic oxidation was carried out in two solutions. The first Ca(NO₃)₂ 20 g dm^-3 (NH₄)₂HPO₄ 20 g dm^-3, NaNO ₃ 10 g dm^-3 (K1), whereas the other, 20 g dm^-3 Ca(H₂PO₂)₂ in 4.3 M H₃PO₄ (K2). Samples anodised in the bath K1 were additionally anodised in the bath K2 containing calcium hypophosphite and phosphoric acid at the voltage 150 V. SEM, EDX, TL-XRD, OCP, CV and EIS methods were used to characterize of obtained layers on titanium. It has been found that it is possible to incorporate Ca and P into the emerging passive layer. The application of the voltage of 150 V makes it very porous. It has been also demonstrated that the modified titanium presents higher resistance to corrosion in the investigated environment than unmodified titanium in Ringer's solutions.

Original language	English
Pages (from-to)	8962-8968
Number of pages	7
Journal	Electrochimica Acta
Volume	56
Issue number	24
DOIs	https://doi.org/10.1016/j.electacta.2011.07.129
Publication status	Published - 1 Oct 2011

Keywords

Anodic oxidation
Biocompatibility
Osteoinductivity
Passivity
Surface modification
Titanium
Titanium oxide

ASJC Scopus subject areas

General Chemical Engineering
Electrochemistry

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10.1016/j.electacta.2011.07.129

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title = "Characterization of passive films formed on titanium during anodic oxidation",

abstract = "The purpose of the study is to characterize the passive films formed on titanium during anodic oxidation in solutions of osteoinductive components: calcium cations and phosphate anions and to determine the electrochemical characteristics of the so modified titanium. Anodic oxidation was carried out in two solutions. The first Ca(NO3)2 20 g dm-3 (NH4)2HPO4 20 g dm-3, NaNO 3 10 g dm-3 (K1), whereas the other, 20 g dm-3 Ca(H2PO2)2 in 4.3 M H3PO4 (K2). Samples anodised in the bath K1 were additionally anodised in the bath K2 containing calcium hypophosphite and phosphoric acid at the voltage 150 V. SEM, EDX, TL-XRD, OCP, CV and EIS methods were used to characterize of obtained layers on titanium. It has been found that it is possible to incorporate Ca and P into the emerging passive layer. The application of the voltage of 150 V makes it very porous. It has been also demonstrated that the modified titanium presents higher resistance to corrosion in the investigated environment than unmodified titanium in Ringer's solutions.",

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AU - Simka, Wojciech

AU - Sadkowski, Andrzej

AU - Warczak, Magdalena

AU - Iwaniak, Aleksander

AU - Dercz, Grzegorz

AU - Michalska, Joanna

AU - MacIej, Artur

PY - 2011/10/1

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N2 - The purpose of the study is to characterize the passive films formed on titanium during anodic oxidation in solutions of osteoinductive components: calcium cations and phosphate anions and to determine the electrochemical characteristics of the so modified titanium. Anodic oxidation was carried out in two solutions. The first Ca(NO3)2 20 g dm-3 (NH4)2HPO4 20 g dm-3, NaNO 3 10 g dm-3 (K1), whereas the other, 20 g dm-3 Ca(H2PO2)2 in 4.3 M H3PO4 (K2). Samples anodised in the bath K1 were additionally anodised in the bath K2 containing calcium hypophosphite and phosphoric acid at the voltage 150 V. SEM, EDX, TL-XRD, OCP, CV and EIS methods were used to characterize of obtained layers on titanium. It has been found that it is possible to incorporate Ca and P into the emerging passive layer. The application of the voltage of 150 V makes it very porous. It has been also demonstrated that the modified titanium presents higher resistance to corrosion in the investigated environment than unmodified titanium in Ringer's solutions.

AB - The purpose of the study is to characterize the passive films formed on titanium during anodic oxidation in solutions of osteoinductive components: calcium cations and phosphate anions and to determine the electrochemical characteristics of the so modified titanium. Anodic oxidation was carried out in two solutions. The first Ca(NO3)2 20 g dm-3 (NH4)2HPO4 20 g dm-3, NaNO 3 10 g dm-3 (K1), whereas the other, 20 g dm-3 Ca(H2PO2)2 in 4.3 M H3PO4 (K2). Samples anodised in the bath K1 were additionally anodised in the bath K2 containing calcium hypophosphite and phosphoric acid at the voltage 150 V. SEM, EDX, TL-XRD, OCP, CV and EIS methods were used to characterize of obtained layers on titanium. It has been found that it is possible to incorporate Ca and P into the emerging passive layer. The application of the voltage of 150 V makes it very porous. It has been also demonstrated that the modified titanium presents higher resistance to corrosion in the investigated environment than unmodified titanium in Ringer's solutions.

KW - Anodic oxidation

KW - Biocompatibility

KW - Osteoinductivity

KW - Passivity

KW - Surface modification

KW - Titanium

KW - Titanium oxide

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JO - Electrochimica Acta

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ER -

Characterization of passive films formed on titanium during anodic oxidation

Abstract

Keywords

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