Comparative study and imaging by PhotoElectroChemical techniques of oxide films thermally grown on zirconium and Zircaloy-4

Benaboud, Rym; Bouvier, Pierre; Petit, Jean‐Pierre; Wouters, Y.; Galerie, A.

doi:10.1016/j.jnucmat.2006.10.001

Cited by 19 publications

(6 citation statements)

References 42 publications

(54 reference statements)

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“…Known semiconductor phases ironcontaining, hematite Fe 2 O 3 and rhomboedric solid solution (Fe x Cr 1−x ) 2 O 3 (respective bandgaps 2.2 and 2.65 eV [48,52]) are not good candidates. Regarding the semiconductor phases containing nickel, the literature points out clearly that the presence of nickel is never reported in anodic passive films.…”

Section: Photoelectrochemical Resultsmentioning

confidence: 99%

Chemical composition and electronic structure of the passive layer formed on stainless steels in a glucose-oxidase solution

Marconnet¹,

Wouters²,

Miserque³

et al. 2008

Electrochimica Acta

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Section: Photoelectrochemical Resultsmentioning

confidence: 99%

Chemical composition and electronic structure of the passive layer formed on stainless steels in a glucose-oxidase solution

Marconnet¹,

Wouters²,

Miserque³

et al. 2008

Electrochimica Acta

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“…It has been demonstrated that an artificial increase of the thickness and changes in the topography of the native oxide will result in very strong reinforcement of the bone response (Albrektsson et al 2000; Sul et al 2002). Further thickening of the surface oxide layer may be performed by different routes, including thermal treatments in air (Benaboud et al 2007), immersion in peroxide (Pan et al 1994) or anodization (Preusser et al 1994; Pauporté and Finne 2006). Zirconium (Zr) and its alloys have been studied for being used in the nuclear power industry and have been recently commercialized for its use in medical implants, especially for total knee and hip replacements after hydrothermally grown oxide (Tsutsumi et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Can anodised zirconium implants stimulate bone formation? Preliminary study in rat model

et al. 2014

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The mechanical properties and good biocompatibility of zirconium and some of its alloys make these materials good candidates for biomedical applications. The attractive in vivo performance of zirconium is mainly due to the presence of a protective oxide layer. In this preliminary study, the surface of pure zirconium modified by anodisation in acidic media at low potentials to enhance its barrier protection given by the oxides and osseointegration. Bare, commercially pure zirconium cylinders were compared to samples anodised at 30 V through electrochemical tests and scanning electron microscopy (SEM). For both conditions, in vivo tests were performed in a rat tibial osteotomy model. The histological features and fluorochrome-labelling changes of newly bone formed around the implants were evaluated on the non-decalcified sections 63 days after surgery. Electrochemical tests and SEM images show that the anodisation treatment increases the barrier effect over the material and the in vivo tests show continuous newly formed bone around the implant with a different amount of osteocytes in their lacunae depending on the region. There was no significant change in bone thickness around either kind of implant but the anodised samples had a significantly higher mineral apposition, suggesting that the anodisation treatment stimulates and assists the osseointegration process. We conclude that anodisation treatment at 30 V can stimulate the implant fixation in a rat model, making zirconium a strong candidate material for permanent implants.

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“…In a recent work [1], where the literature of the PhotoElectroChemical behaviour of oxidised zirconium and its alloys was described, we showed that PEC techniques allowed to effectively discriminate minor oxides in the ZrO 2 scale. In the case of Zircaloy-4, it was possible to clearly identify the presence of haematite Fe 2 O 3 , rhomboedric solid solution (Fe x Cr 1-x ) 2 O 3 , and chromia Cr 2 O 3 , phases also recently identified by Bozzano et al [2].…”

Section: Introductionmentioning

confidence: 85%

Imaging by Photoelectrochemical Techniques of Laves-Phases γ Zr(Fe,Cr)<sub>2 </sub> Thermally Oxidized on Zircaloy-4

Atmani

Wouters²,

Galerie

et al. 2008

MSF

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The oxidation of γ-Zr(Fe,Cr)2 intermetallic particles during the thermal exposition of Zircaloy-4 at 470°C in oxygen was investigated with PhotoElectroChemical techniques (PEC). Via the measurement of bandgap, haematite Fe2O3 (2.2 eV), rhomboedric solid solution (FexCr1-x)2O3 (2.6 eV) and chromia Cr2O3 (3.0 eV) phases were identified as components of oxidised particles. Evolution of size, lateral distribution and density of these particles was studied in function of zirconia scale thickness. During the first stage of oxidation, the density of oxidised particles increased with thickness but decreased during a second stage, highlighting in an innovative way the phenomenon of haematite and chromia dissolution in the zirconia matrix. It is concluded that PEC techniques represent a sensitive and powerful way to locally analyse the various semiconductor phases in an oxide scale at the micron scale.

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Comparative study and imaging by PhotoElectroChemical techniques of oxide films thermally grown on zirconium and Zircaloy-4

Cited by 19 publications

References 42 publications

Chemical composition and electronic structure of the passive layer formed on stainless steels in a glucose-oxidase solution

Chemical composition and electronic structure of the passive layer formed on stainless steels in a glucose-oxidase solution

Can anodised zirconium implants stimulate bone formation? Preliminary study in rat model

Imaging by Photoelectrochemical Techniques of Laves-Phases γ Zr(Fe,Cr)<sub>2 </sub> Thermally Oxidized on Zircaloy-4

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