Electrochemical stability of binary TiNb for biomedical applications

Leiva, Karla Miriam Reyes; Kuromoto, Neide K.; Claro, Ana Paula Rosifini Alves; Marino, Cláudia Eliana Bruno

doi:10.1088/2053-1591/aa6ee4

Cited by 9 publications

(5 citation statements)

References 36 publications

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“…Also, according to the OCP and Bode diagrams, Ti-13Nb-13Zr showed a better corrosion resistance in comparison with the other tested alloys because of a spontaneous stable oxide layer (TiO 2 ) formed on its surface. Although the chemical stability of Ti-Nb alloys is high (because of their excellent passive layer behaviour [37]), an increase in pH, in acidification of the Ringer's solution from pH 7.5 to pH 0.5 resulted in negative corrosion potential shifts. The addition of NaCl further exacerbated the corrosion resistance [38][39][40][41][42].…”

Section: In Vitro Electrochemical Corrosion Testing Proceduresmentioning

confidence: 99%

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On the Corrosion Behaviour of Low Modulus Titanium Alloys for Medical Implant Applications: A Review

Afzali

Ghomashchi

Oskouei

2019

Metals

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The corrosion behaviour of new generation titanium alloys (β-type with low modulus) for medical implant applications is of paramount importance due to their possible detrimental effects in the human body such as release of toxic metal ions and corrosion products. In spite of remarkable advances in improving the mechanical properties and reducing the elastic modulus, limited studies have been done on the electrochemical corrosion behaviour of various types of low modulus titanium alloys including the effect of different beta-stabilizer alloying elements. This development should aim for a good balance between mechanical properties, design features, metallurgical aspects and, importantly, corrosion resistance. In this article, we review several significant factors that can influence the corrosion resistance of new-generation titanium alloys such as fabrication process, body electrolyte properties, mechanical treatments, alloying composition, surface passive layer, and constituent phases. The essential factors and their critical features are discussed. The impact of various amounts of α and β phases in the microstructure, their interactions, and their dissolution rates on the surface passive layer and bulk corrosion behaviour are reviewed and discussed in detail. In addition, the importance of different corrosion types for various medical implant applications is addressed in order to specify the significance of every corrosion phenomenon in medical implants.

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Section: In Vitro Electrochemical Corrosion Testing Proceduresmentioning

confidence: 99%

“…The single α phase is less corrosion resistant than β phase. However, according to [37], once the attack initiated in the two-phase (as-received α + β) alloy, the β phase appeared to be less resistant to continued dissolution than the α phase.…”

Section: Fabrication Processmentioning

confidence: 99%

On the Corrosion Behaviour of Low Modulus Titanium Alloys for Medical Implant Applications: A Review

Afzali

Ghomashchi

Oskouei

2019

Metals

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“…Among the Ti-40Nb based materials, superelastic behavior caused by the stress-induced martensitic transformation between cubic β phase and orthorhombic α" martensite phase is observed in the Ti- (25.5-27) at. % Nb alloy [4,5]. The superelasticity of the recovered largest strain is presented in the Ti-26 at.…”

Section: Introductionmentioning

confidence: 96%

Synthesis, Characterization and Antimicrobial Studies of Ti-40Nb-10Ag Implant Biomaterials

Zhu

Zhang

Chen

et al. 2022

Metals

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Bacterial infection and stress shielding are important issues in orthopedic implants. In this study, Ag element was selected as an antibacterial agent to develop an antibacterial Ti-40Nb-10Ag alloy by spark plasma sintering (SPS). The microstructure, phase constitution, mechanical properties, microhardness, and antibacterial properties of the Ti-40Nb-10Ag sintered alloys with different sintering temperatures were systematically studied by X-ray diffraction (XRD), scanning electron microscope (SEM), microhardness tests, compressive tests, and antibacterial tests. The Ti-40Nb-10Ag alloys were mainly composed of α-Ti, β-Ti, and Ti2Ag intermetallic phases. This study shows that the change in sintering temperature affects the microstructure of the alloy, which results in changes in its microhardness, compressive strength, elastic modulus, and antibacterial properties. At the sintering temperature of 975 °C, good metallurgical bonding was developed on the surface of the alloy, which led to excellent microhardness, compressive strength, elastic modulus, and antibacterial ability with an antibacterial rate of 95.6%. In conclusion, the Ti-40Nb-10Ag alloy prepared by SPS at 975 °C is ideal and effective for orthopedic implant.

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“…Pure titanium is one of the biomaterials that has been used in implant manufacturing due to its inherent properties and exceptional corrosion resistance [28][29][30]. In recent times, niobium has also gained considerable attention due to its enhanced properties and potential use in biomedical applications [31][32][33]. The addition of these reinforcements has been selected so as to maintain the austenitic structure of the developed compositions.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Surface Nitriding and Characterization of Ti-Nb Modified 316L Stainless Steel Alloy Using Powder Metallurgy

et al. 2021

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The powder metallurgy (PM) technique has been widely used for producing different alloy compositions by the addition of suitable reinforcements. PM is also capable of producing desireable mechanical and physical properties of the material by varying process parameters. This research investigates the addition of titanium and niobium in a 316L stainless steel matrix for potential use in the biomedical field. The increase of sintering dwell time resulted in simultaneous sintering and surface nitriding of compositions, using nitrogen as the sintering atmosphere. The developed alloy compositions were characterized using OM, FESEM, XRD and XPS techniques for quantification of the surface nitride layer and the nitrogen absorbed during sintering. The corrosion resistance and cytotoxicity assessments of the developed compositions were carried out in artificial saliva solution and human oral fibroblast cell culture, respectively. The results indicated that the nitride layer produced during sintering increased the corrosion resistance of the alloy and the developed compositions are non-cytotoxic. This newly developed alloy composition and processing technique is expected to provide a low-cost solution to implant manufacturing.

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Electrochemical stability of binary TiNb for biomedical applications

Abstract: To cite this article: K M Reyes et al 2017 Mater. Res. Express 4 075402 View the article online for updates and enhancements.

Cited by 9 publications

References 36 publications

On the Corrosion Behaviour of Low Modulus Titanium Alloys for Medical Implant Applications: A Review

On the Corrosion Behaviour of Low Modulus Titanium Alloys for Medical Implant Applications: A Review

Synthesis, Characterization and Antimicrobial Studies of Ti-40Nb-10Ag Implant Biomaterials

Synthesis, Surface Nitriding and Characterization of Ti-Nb Modified 316L Stainless Steel Alloy Using Powder Metallurgy

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