Grain refinement effect on the Ti-45Nb alloy electrochemical behavior in simulated physiological solution

Cvijović‐Alagić, Ivana; Laketić, Slađana; Bajat, Jelena B.; Hohenwarter, Anton; Rakin, Marko

doi:10.1016/j.surfcoat.2021.127609

Cited by 17 publications

(7 citation statements)

References 35 publications

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“…On the surface of ultrafine grain alloy, a more rapid formation of a passivating layer with improved barrier properties was observed, resulting in improved corrosion resistance of the alloy following severe plastic deformation. Increased grain contact area in the refined microstructure accelerated the formation of a less defective protective barrier surface layer and promoted alloy surface passivation under simulated physiological conditions [25,26]. Electrochemical tests done in this study shows that ECAP influences the corrosion properties of SS316L.…”

Section: Discussionmentioning

confidence: 61%

Effect of ECAP Die Angle on Mechanical Properties and Biocompatibility of SS316L

Shri

Zahari

Yamamoto

2021

Metals

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In this study, ultrafine grain (UFG) SS316L was produced using an equal channel angular pressing (ECAP) process at two different die angles namely 120° and 126°. The effect of different die angles on mechanical, corrosion, and surface properties were thoroughly investigated. Furthermore, the subsequent effect on the cytotoxicity of SS316L was investigated. The microstructure observation shows ECAP processing has produced an elongated, finer grain size at 120° than 126°. The ECAP processing also increases the hardness of SS316L. There is no change in wettability and surface roughness observed. However, the ectrochemical measurement reveals that ECAP processing improves the corrosion resistance of SS316L. The cytocompatibility of ECAPed SS316L was evaluated by both a direct and an extract methods, finding the contribution of grain refinement by ECAP processing.

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Section: Discussionmentioning

confidence: 61%

Effect of ECAP Die Angle on Mechanical Properties and Biocompatibility of SS316L

Shri

Zahari

Yamamoto

2021

Metals

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“…For several years, research on Ti Nb alloys has been focused on obtaining a satisfactory balance between elastic modulus and mechanical strength. [53][54][55][56][57] Less attention has been paid to corrosion resistance, which up to date has been characterized in detail mainly in the standard biomedical solutions, which do not sufficiently reflect the complexity of peri-implant fluids. 56,58,59 This study focuses on the analysis of how organic compounds of human fluids (proteins) affect the corrosion behavior of Ti Nb alloy under simulated inflammatory conditions, which are clinically relevant during the post-operative period.…”

Section: Discussionmentioning

confidence: 99%

“…Future work should also consider the effect of microstructure on Ti Nb corrosion behavior in PBS + H 2 O 2 + albumin, which could be refined in order to alter alloy's mechanical properties. 54,55 Moreover, similar corrosion evaluation should also be repeated for other promising Ti β-phase biomedical alloys that contain different β-phase stabilizers.…”

Section: Discussionmentioning

confidence: 99%

“…Biomedical TiNb alloys respond to this problem by offering remarkably lower elastic modulus values than currently used standard metal‐based biomaterials. For several years, research on TiNb alloys has been focused on obtaining a satisfactory balance between elastic modulus and mechanical strength 53–57 . Less attention has been paid to corrosion resistance, which up to date has been characterized in detail mainly in the standard biomedical solutions, which do not sufficiently reflect the complexity of peri‐implant fluids 56,58,59 .…”

Section: Discussionmentioning

confidence: 99%

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Albumin suppresses oxidation of TiNb alloy in the simulated inflammatory environment

Sotniczuk,

Kalita,

Chromiński

et al. 2024

J Biomed Mater Res

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Literature data has shown that reactive oxygen species (ROS), generated by immune cells during post‐operative inflammation, could induce corrosion of standard Ti‐based biomaterials. For Ti6Al4V alloy, this process can be further accelerated by the presence of albumin. However, this phenomenon remains unexplored for Ti β‐phase materials, such as TiNb alloys. These alloys are attractive due to their relatively low elastic modulus value. This study aims to address the question of how albumin influences the corrosion resistance of TiNb alloy under simulated inflammation. Electrochemical and ion release tests have revealed that albumin significantly enhances corrosion resistance over both short (2 and 24 h) and long (2 weeks) exposure periods. Furthermore, post‐immersion XPS and cross‐section TEM analysis have demonstrated that prolonged exposure to an albumin‐rich inflammatory solution results in the complete coverage of the TiNb surface by a protein layer. Moreover, TEM studies revealed that H2O2‐induced oxidation and further formation of a defective oxide film were suppressed in the solution enriched with albumin. Overall results indicate that contrary to Ti6Al4V, the addition of albumin to the PBS + H2O2 solution is not necessary to simulate the harsh inflammatory conditions as could possibly be found in the vicinity of a TiNb implant.

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“…Most of the reported values of corrosion potential for titanium alloys without coatings in Ringer's solution are in the range of À 700 mV to À 100 mV [49][50][51]. The difference should be caused by the different alloying compositions and testing conditions [49,52,53]. After deposition for 30 minutes, specimen D30 has a corrosion potential value of À 325.24 � 20.26 mV, which is 194.44 mV higher than the specimen without a carbonated hydroxyapatite film.…”

Section: Film-substrate Adhesion and Corrosion Behavior In Ringer's S...mentioning

confidence: 99%

Formation of the carbonated hydroxyapatite film on Ti‐30Zr‐5Al‐3V bio‐alloy

Liu

Cui

Liang

et al. 2023

Materialwissenschaft Werkst

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The Ti‐30Zr‐5Al‐3V titanium alloy has an ultra‐low Young's modulus. So, it promises great application potential as a hard‐tissue implanted biomaterial. However, its surface performances need to be improved before clinical applications. In this work, a carbonated hydroxyapatite film is deposited on the surface of Ti‐30Zr‐5Al‐3V bio‐alloy using electrochemical methods. Microstructure, film‐substrate adhesion, and electrochemical corrosion behavior of carbonated hydroxyapatite deposited specimens in Ringer's solution are investigated. A homogeneous, dense, and fully covered carbonated hydroxyapatite film forms on the surface after depositing at 3 V, 90 °C for 120 minutes. The formation mechanism of the carbonated hydroxyapatite film on the micro‐nano structure surface is revealed. The corrosion performance of carbonated hydroxyapatite deposited specimens in Ringer's solution is evaluated by using potentiodynamic polarization curves. The carbonated hydroxyapatite deposition obviously enhanced the corrosion resistance of the Ti‐30Zr‐5Al‐3V bio‐alloy.

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Grain refinement effect on the Ti-45Nb alloy electrochemical behavior in simulated physiological solution

Cited by 17 publications

References 35 publications

Effect of ECAP Die Angle on Mechanical Properties and Biocompatibility of SS316L

Effect of ECAP Die Angle on Mechanical Properties and Biocompatibility of SS316L

Albumin suppresses oxidation of TiNb alloy in the simulated inflammatory environment

Formation of the carbonated hydroxyapatite film on Ti‐30Zr‐5Al‐3V bio‐alloy

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