Metallurgical failure analysis of various implant materials used in orthopedic applications

Aksakal, Bünyamin; Yildirim, O; Gül, Hakan

doi:10.1007/s11668-996-0007-9

Cited by 102 publications

(36 citation statements)

References 30 publications

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“…Biodegradable materials including magnesium, iron, and zinc-based alloys have been studied for use in orthopedic and cardiovascular devices [1,2]. In particular, because of their non-toxicity [3], mechanical properties (close to bone) [4], and degradability [5], magnesium-based alloys are being explored by the research communities [6–9].…”

Section: Introductionmentioning

confidence: 99%

Enhanced mechanical properties and increased corrosion resistance of a biodegradable magnesium alloy by plasma electrolytic oxidation (PEO)

White

Koo

Neralla³

et al. 2016

Materials Science and Engineering: B

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We report the enhanced mechanical properties of AZ31 magnesium alloys by plasma electrolytic oxidation (PEO) coating in NaOH, Na2SiO3, KF and NaH2PO4·2H2O containing electrolytes. Mechanical properties including wear resistance, surface hardness and elastic modulus were increased for PEO-coated AZ31 Mg alloys (PEO-AZ31). DC polarization in Hank’s solution indicating that the corrosion resistance significantly increased for PEO-coating in KF-contained electrolyte. Based on these results, the PEO coating method shows promising potential for use in biodegradable implant applications where tunable corrosion and mechanical properties are needed.

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Section: Introductionmentioning

confidence: 99%

Enhanced mechanical properties and increased corrosion resistance of a biodegradable magnesium alloy by plasma electrolytic oxidation (PEO)

White

Koo

Neralla³

et al. 2016

Materials Science and Engineering: B

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“…Orthopaedic implants need to maintain their mechanical integrity (20)(21)(22)(23)(24)(25) MPa) for about 5 Â 10 5 cycles [14]. However, we have shown that as-cast AZ91D Mg alloy possesses a fatigue strength of 17 MPa in m-SBF, which is considerably lower than required.…”

Section: General Considerationsmentioning

confidence: 88%

“…Depending on the nature of loading, corrosion assisted cracking includes stress corrosion cracking (tensile loading) and corrosion fatigue (cyclic loading). Stress corrosion cracking (SCC) of Mg alloys has been widely investigated including in physiological environments [16][17][18][19][20] of Mg alloys in human body fluid has received little attention even though CF fractures cause catastrophic failures of biomedical implants [14,[21][22][23][24]. There are two main mechanisms for SCC of Mg alloys: hydrogen induced cracking (hydrogen embrittlement), and dissolution assisted cracking [25,26].…”

Section: Introductionmentioning

confidence: 99%

Corrosion fatigue of a magnesium alloy in modified simulated body fluid

Jafari

Raman

Davies

2015

Engineering Fracture Mechanics

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“…Other studies (Aksaka, Yildirim, & Gul, 2004;Hansen, 2008) have stated that mechanical complications, including primarily fatigue fracture, are accelerated by corrosion. Also, implant corrosion can lead to biological complications caused by metal ion release, including toxicity, carcinogenicity, and hypersensitivity (Goodman, Lind, Song, & Smith, 1998).…”

Section: Introductionmentioning

confidence: 99%

Corrosion resistance of coupled sandblasted, large‐grit, acid‐etched (SLA) and anodized Ti implant surfaces in synthetic saliva

Otaibi

Sherif

Al‐Rifaiy

et al. 2019

Clinical & Exp Dental Res

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PurposeThe purpose of this study was to investigate the corrosion resistance of galvanically coupled SLA and anodized implant surfaces with a Co‐Cr alloy.Materials and MethodsThree groups were included in this study. The first (SLA) was composed of SLA implants (Institut Straumann, Basel, Switzerland), the second (ANO) of NobelReplace® (Nobel Biocare, Göteborg, Sweden), and the third (MIX) of both implant systems combined. All groups were assembled with a single Co‐Cr superstructure. Electrochemical testing included open‐circuit potential, electrochemical impedance spectroscopy, cyclic potentiodynamic polarization, and chronoamperometric current‐time measurements. The quantitative results (EOCP, ECORR, ICORR, EPROT, RP, and ICA) were statistically analyzed by one‐way ANOVA and Tukey's post‐hoc multiple comparison test (α = 0.05)ResultsAll the aforementioned parameters showed statistically significant differences apart from ECORR and EPROT. The evaluation of qualitative and quantitative results showed that although SLA had higher corrosion resistance compared with ANO, it had less resistance to pitting corrosion. This means that SLA showed increased resistance to uniform corrosion but less resistance if pitting corrosion was initiated. In all cases, MIX showed intermediate behavior.ConclusionThe corrosion resistance of implant‐retained superstructures is dependent on the electrochemical properties of the implants involved, and thus different degrees of intraoral corrosion resistance among different implant systems are anticipated.

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Metallurgical failure analysis of various implant materials used in orthopedic applications

Cited by 102 publications

References 30 publications

Enhanced mechanical properties and increased corrosion resistance of a biodegradable magnesium alloy by plasma electrolytic oxidation (PEO)

Enhanced mechanical properties and increased corrosion resistance of a biodegradable magnesium alloy by plasma electrolytic oxidation (PEO)

Corrosion fatigue of a magnesium alloy in modified simulated body fluid

Corrosion resistance of coupled sandblasted, large‐grit, acid‐etched (SLA) and anodized Ti implant surfaces in synthetic saliva

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