Roughness evolution of metallic implant surfaces under contact loading and nanometer-scale chemical etching

Ryu, J.J.; Letchuman, S.; Shrotriya, Pranav

doi:10.1016/j.jmbbm.2012.04.022

Cited by 7 publications

(4 citation statements)

References 36 publications

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“…However, due to their superior mechanical and biochemical performance, Ti and CoCr alloys are continually used in current joint implant manufacturing. The previous investigation of tribocorrosion of metallic implants indicates that the CoCr surface showed more wear rate than the Ti alloy surface under the same mechanical and electrochemical stimuli, despite the greater hardness of the Co-Cr surface compared to that of the Ti alloy surface [33][34][35][36]. Previous studies agreed with the retrieval studies of hip replacements: at the CoCr-Ti junction, the harder CoCr surface showed faster wear behavior than the counter Ti surface [12,37].…”

Section: Introductionsupporting

confidence: 54%

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Sliding Corrosion Fatigue of Metallic Joint Implants: A Comparative Study of CoCrMo and Ti6Al4V in Simulated Synovial Environments

et al. 2022

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Mechanical contact in a corrosive synovial environment leads to progressive surface damage at the modular interface of the joint implants. The wear debris and corrosion products degrade the synovial fluids and change the lubrication mechanisms at the joints. Consequently, the unstable joint lubrication and corrosion products will further induce the undesirable performance of the joint implants. In this study, the two major joint materials, CoCrMo and Ti6Al4V, were tested during the course of reciprocal sliding contact in simulated synovial liquids. Open circuit potential and coefficient of friction were monitored to describe electrochemical and mechanical responses. Potentiostatic test results illustrated electrochemical damage on both surfaces that modified oxidation chemistry on both surfaces. However, more significant modification of the CoCrMo surface was detected during wear in the simulated joint liquid. Even with a reduced coefficient of friction on the CoCrMo surface in sodium lactate environments, fretting current density drastically increased in corrosive sodium lactate with pH 2. However, the test results from the Ti6Al4V surface presented less coefficient of friction values, and moderate change in fretting current. Therefore, the experimental study concluded that the biocompatibility of Ti6Al4V is superior to that of CoCrMo in the combined effect of mechanical loadings and an electrochemical environment.

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Section: Introductionsupporting

confidence: 54%

“…The damaged passive film by sliding contact resulted in a significant potential drop in the negative, followed by a subsequent increase in anodic current [36]. The coefficients of friction were monitored with the measured OCP changes.…”

Section: Open Circuit Potential Measurementmentioning

confidence: 99%

Sliding Corrosion Fatigue of Metallic Joint Implants: A Comparative Study of CoCrMo and Ti6Al4V in Simulated Synovial Environments

et al. 2022

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“…These entail direct physical fabrication methods, such as sand blast [38,39] and laser ablation [40], or pattern transferring from templates e.g. chemical etching [41][42][43][44][45][46]. To date, however, there is no agreement on the optimal values to be implemented given a particular surface.…”

Section: Economic Impact Of Surface Engineeringmentioning

confidence: 99%

Functional surfaces for tribological applications: inspiration and design

Abdel-Aal

2016

Surf. Topogr.: Metrol. Prop.

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Surface texturing has been recognized as a method for enhancing the tribological properties of surfaces for many years. Adding a controlled texture to one of two faces in relative motion can have many positive effects, such as reduction of friction and wear and increase in load capacity. To date, the true potential of texturing has not been realized not because of the lack of enabling texturing technologies but because of the severe lack of detailed information about the mechanistic functional details of texturing in a tribological situation. Experimental as well as theoretical analysis of textured surfaces define important metrics for performance evaluation. These metrics represent the interaction between geometry of the texturing element and surface topology. To date, there is no agreement on the optimal values that should be implemented given a particular surface. More importantly, a well-defined methodology for the generation of deterministic textures of optimized designs virtually does not exist. Nature, on the other hand, offers many examples of efficient texturing strategies (geometries and topologies) specifically applied to mitigate frictional effects in a variety of situations. Studying these examples may advance the technology of surface engineering. This paper therefore, provides a comparative review of surface texturing that manifest viable synergy between tribology and biology. We attempt to provide successful emerging examples where borrowing from nature has inspired viable surface solutions that address difficult tribological problems both in dry and lubricated contact situations.

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“…Since a decade or so, the electrochemical anodization process is considered a low-cost surface treatment method to prepare a homogenous porous, adherent and rough titania (TiO 2 ) coating, which will induce apatite formation in living environment or simulated body fluid to enhance bioactivity [7]. The formation of thick, adherent and micro/nanoporous TiO 2 films on titanium by anodic oxidation depends on the nature and concentration of the anodizing electrolyte, voltage, current density and temperature [10]. Similarly, wet chemical etching, another low-cost surface treatment method, has attracted the attention of the researchers and their efforts to improve it due to its efficiency to fabricate nanostructure surfaces [11].…”

Section: Introductionmentioning

confidence: 99%

Construction of Nanophase Novel Coatings-Based Titanium for the Enhancement of Protein Adsorption

Fadlallah

Amin

Alosaimi

2016

Acta Metall. Sin. (Engl. Lett.)

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In the recent years, biological nanostructures coatings have been incorporated into orthopedic and dental implants in order to accelerate osseointegration and reducing surgical restrictions. In the present work, chemical etching, anodization and metal doping surface modification methods were integrated in one strategy to fabricate innovative titanium surfaces denominated by titanium nanoporous, anodized titanium nanoporous, silver-anodized titanium nanoporous and gold-anodized titanium nanoporous. The stability properties of nanostructures-coated surfaces were elucidated using electrochemical impedance spectroscopy (EIS) after 7 days of immersion in simulated biological fluids. Morphology and chemical compositions of new surfaces were characterized by scanning electron microscope and energy-dispersive X-ray analysis. The EIS results and data fitting to the electrical equivalent circuit model demonstrated the influence of adsorption of bovine serum albumin on new surfaces as a function of protein concentration. Adsorption process was described by the very well-known model of the Langmuir adsorption isotherm. The thermodynamic parameter DG ADS (-50 to 59 kJ mol-1) is calculated, which supports the instantaneous adsorption of protein from biological fluids to new surfaces and refers to their good biocompatibility. Ultimately, this study explores new surface strategy to gain new implants as a means of improving clinical outcomes of patients undergoing orthopedic surgery.

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Roughness evolution of metallic implant surfaces under contact loading and nanometer-scale chemical etching

Cited by 7 publications

References 36 publications

Sliding Corrosion Fatigue of Metallic Joint Implants: A Comparative Study of CoCrMo and Ti6Al4V in Simulated Synovial Environments

Sliding Corrosion Fatigue of Metallic Joint Implants: A Comparative Study of CoCrMo and Ti6Al4V in Simulated Synovial Environments

Functional surfaces for tribological applications: inspiration and design

Construction of Nanophase Novel Coatings-Based Titanium for the Enhancement of Protein Adsorption

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