Studies on the stability of anodic oxides on zirconium biocompatible alloys

Oliveira, Nilson T. C.; Biaggio, Sonia R.; Rocha‐Filho, Romeu C.; Bocchi, Nerilso

doi:10.1590/s0103-50532002000400009

Cited by 23 publications

(26 citation statements)

References 20 publications

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“…Zirconium has acceptable mechanical strength and good biocompatibility. 14,15 Zirconium implants exhibit good osseointegration and the degree of bone-implant contact is higher for Zr than for Ti. [16][17][18][19] Only few alloys with zirconium were elaborated for implant use: Ti-2.2Al-2.6Zr, 11 Ti-13Nb-13Zr, 20,21 Ti-15Zr-4Nb-4Ta, 10 Ti-15Zr-4Nb-4Ta-0.2Pd, 22 Ti-50Zr and Zr-25Nb.…”

Section: Introductionmentioning

confidence: 99%

“…[16][17][18][19] Only few alloys with zirconium were elaborated for implant use: Ti-2.2Al-2.6Zr, 11 Ti-13Nb-13Zr, 20,21 Ti-15Zr-4Nb-4Ta, 10 Ti-15Zr-4Nb-4Ta-0.2Pd, 22 Ti-50Zr and Zr-25Nb. 14 The new Romanian Ti-6Al-4V-1Zr alloy was elaborated for to combine the very good mechanical properties of Ti-6Al-4V alloy with the good biocompatibility of zirconium. Its corrosion resistance in Ringer-Brown solution and Carter-Brugirard artificial saliva of different pH values was studied in this paper.…”

Section: Introductionmentioning

confidence: 99%

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Corrosion resistance improvement of titanium base alloys

Popa¹,

Vasilescu²,

Drob³

et al. 2010

Quím. Nova

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Recebido em 4/2/10; aceito em 2/6/10; publicado na web em 24/8/10The corrosion resistance of the new Ti-6Al-4V-1Zr alloy in comparison with ternary Ti-6Al-4V alloy in Ringer-Brown solution and artificial Carter-Brugirard saliva of different pH values was studied. In Ringer-Brown solution, the new alloy presented an improvement of all electrochemical parameters due to the alloying with Zr; also, impedance spectra revealed better protective properties of its passive layer. In Carter-Brugirard artificial saliva, an increase of the passive film thickness was proved. Fluoride ions had a slight negative influence on the corrosion and ion release rates, without to affect the very good stability of the new Ti-6Al-4V-1Zr alloy.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Corrosion resistance improvement of titanium base alloys

Popa¹,

Vasilescu²,

Drob³

et al. 2010

Quím. Nova

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“…The electrochemical method used to grow the oxide films consisted of a linear potential scan (v D 50 mV/s) from a potential in the hydrogen evolution region ( 1.6 V vs SCE) towards more positive potentials (E F ), up to 8 V; each oxide thus obtained was aged by keeping the system polarized at E F until the current reached an approximately constant value. 12 This experimental procedure was carried out using an Autolab PGSTAT 30 potentiostat/galvanostat from Eco Chemie, controlled by the GPES software.…”

Section: Methodsmentioning

confidence: 99%

“…Studies done in our laboratory 12 on the stability of anodic oxides grown on zirconium and its biocompatible alloys Ti-50Zr at.% and Zr-2.5Nb wt.%, in aerated Ringer physiological solution, showed that the stability of these oxides is increased by aging under potentiostatic conditions and decreased by the presence of chloride ions in the electrolyte during the anodization process. More recently, we also reported that, in solutions simulating physiologic media (Ringer and phosphate buffered saline (PBS) solutions), the Ti-50Zr at.% alloy has a better corrosion protection than the Zr-2.5Nb wt.% alloy or pure Zr.…”

Section: Introductionmentioning

confidence: 99%

Investigation of passive films grown on biocompatible Ti‐50Zr and Ti‐13Zr‐13Nb alloys by XPS

Oliveira

Biaggio

Nascente

et al. 2006

Surface & Interface Analysis

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In this work, XPS investigations on the composition of anodic films electrochemically grown on heat-treated Ti-50Zr (at.%) and Ti-13Zr-13Nb (wt.%) alloys in 0.15 mol dm −3 Na 2 SO 4 at room temperature are reported. The XPS analyses on anodic films of different thicknesses revealed for both alloys a gradual enrichment of the oxide film in Ti as the film thickness was increased. For the thickest oxide films, this Ti enrichment in the oxide was about 8% for the Ti-13Nb-13Zr alloy and about 9% for the Ti-50Zr alloy, when compared with the nominal values for both alloys determined by inductively coupled plasma-atomic emission spectroscopy (ICP-AES).

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“…This film provides a barrier between the metal and the medium. Typical values of the initial thickness of these oxide films are in the range of 2-5 nm, when formed in air at room temperature, but the thickness of the films can be increased by thermal oxidation or by anodic oxidation [1]. Oxide materials have an abundance of interesting physical properties that can be used for various technological applications.…”

Section: Introductionmentioning

confidence: 99%

Air-thermal oxidation of zirconium

Koneska¹,

Manojlović²,

Stoevska-Gogovska³

2017

J. eng. process. manag.

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Zirconium is one of those few metals which are capable of dissolving relatively large quantities of oxygen. When heated in air at elevated temperatures, an oxide layer is built up at the metal surface. The oxidation of mechanically polished zirconium was studied in the range 500-900oC in air atmosphere, at temperature intervals of 100oC, for exposure times from 5 min to 1860 min for each temperature. The weight gain of the oxidized species was the reacted amount of oxygen with zirconium for the formation of the ZrO2. The weight gain and thickness of the oxide film increase with the increasing of the oxidation time and temperature. The oxidation initially followed a parabolic rate at all temperatures. At temperatures higher than 700oC oxide "breakaway" appears at the longest oxidation times. Microstructural investigations have shown that the oxide layers are compact and with good adhesion to the metal surface, but at temperatures over 700oC, radial micro-cracks appear. Raman spectra of the formed oxides at the investigated temperatures are characteristic for monoclinic phase.

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Studies on the stability of anodic oxides on zirconium biocompatible alloys

Cited by 23 publications

References 20 publications

Corrosion resistance improvement of titanium base alloys

Corrosion resistance improvement of titanium base alloys

Investigation of passive films grown on biocompatible Ti‐50Zr and Ti‐13Zr‐13Nb alloys by XPS

Air-thermal oxidation of zirconium

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