Effect of Nb on the Microstructure, Mechanical Properties, Corrosion Behavior, and Cytotoxicity of Ti-Nb Alloys

Han, Mi‐Kyung; Kim, Jai-Youl; Hwang, Moon-Jin; Song, Ho‐Jun; Park, Kyung Hee

doi:10.3390/ma8095287

Cited by 106 publications

(57 citation statements)

References 28 publications

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“…Electrochemical passivity of Ti and Nb has been mainly studied using galvanostatic, potentiostatic, potentiodynamic and EIS techniques [17][18][19][20]. In this paper we used potentiostatic and potentiodynamic methods combined with ellipsometry.…”

Section: Resultsmentioning

confidence: 99%

Ellipsometric study of passive and anodic oxide films formed on Ti and Nb electrodes

Arsov

Mickova

2016

J. Electrochem. Sci. Eng.

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Electrochemical formation of passive films and active/passive transition on Ti and Nb metal surfaces in various concentrations of H2SO4 and KOH solutions was investigated using potentiostatic and cyclic voltammetry methods. By simultaneous electrochemical and in-situ ellipsometric measurements the coefficients of film thickness growth of passive films in the potential region from -1.5 V to 4 V were determined. Results indicate the strong influence of the concentration and electrolyte nature to the active/passive transitions and stability of passive films. The influence of cathodic pre-treatment on the passive films dissolution and appearance of the reactivation peaks during the reverse potential cycling were shown. By multiple cycle sequences in which the final anodic potential was gradually enlarged, the barrier properties of passive films on investigated electrodes were confirmed. The electrochemical and ellipsometric data showed that the passive films formed on Nb electrode are more resistant that passive films formed on Ti electrode, especially in higher concentrations of investigated aggressive solutions.

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Section: Resultsmentioning

confidence: 99%

Ellipsometric study of passive and anodic oxide films formed on Ti and Nb electrodes

Arsov

Mickova

2016

J. Electrochem. Sci. Eng.

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“…The mechanical tests result of the alloys are shown in Figure 7. (Han et al, 2015) The increase in hardness value from cp-Ti to Ti-5Nb was due to solid solution hardening with addition of Nb. The hardness then decrease at Ti-10Nb because of the unexpected decrease in beta peak and increase in alpha peak.…”

Section: Past Research On Binary Ti-nb Alloymentioning

confidence: 98%

UQ eSpace

Khairuddin¹

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This study investigates the effect of adding an element to commercially pure titanium, particularly-stabilizing element.-stabilizers as alloying element for titanium are proven to exhibit suitable mechanical properties for biomedical applications such as orthopedic implants. The main objective of this research is to observe the effect of adding a selected alloying element, niobium (Nb) to pure titanium in terms of microstructure changes and the mechanical properties. There has been an ongoing research for Ti-Nb alloy with regards to it as a potential biomedical alloy. The adaptation of existing titanium alloy from aerospace application, Ti-6Al-4V has imposed neural disorders and adverse tissue effects due to cytotoxicity of aluminium (Al) and vanadium (V). The other concern is to find the solution to reduce the elastic modulus of existing titanium alloy. Several efforts have been done to sort these issues and Ti-Nb based materials have shown positivity in their passivity and low elastic modulus. Since then, the mechanical properties of binary Ti-Nb alloys have been investigated. In this project, pure titanium and three different composition of Ti-Nb samples are prepared (pure Ti, Ti-10Nb, Ti-20Nb and Ti-30Nb). These samples are manufactured via the concept of powder metallurgy, which involved mechanical die pressing and vacuum sintering. For microstructural investigations, the samples were taken for further surface finishing process, which includes cutting, mounting, grinding, polishing and etching. The microstructure of the samples are examined with optical microscope. In order to study their mechanical properties, series of compression tests and Vickers hardness tests were conducted. From the results, the samples have shown an evolution of alpha () and beta () phase where the concentration of phase increases with increasing Nb content. The compression tests have shown that the elastic modulus increases at 10% content Nb compared to pure titanium, followed by drastic decrease at Ti-20Nb and a slight increase at Ti-30Nb. Other mechanical properties are also examined such as the 0.2% offset yield stress, ultimate compressive stress (UCS), ductility and the modulus of resilience. Out of the samples being tested and analyzed, Ti-20Nb has a potential to be introduced as a biomaterial for implants.

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“…Berdasarkan pengamatan dapat diketahui bahwa kurva polarisasi tafel pada masing-masing paduan titanium semakin meningkat seiring dengan meningkatnya waktu pencelupan dalam 0 menit, 60 menit, 120 menit dan 180 menit. Berdasarkan pengamatan dapat diketahui bahwa fasa yang terkandung didalam Ti-6Al-4V sesudah pengujian korosi dengan metoda polarisasi adalah fasa α-Ti, fasa β-Ti, senyawa Al2O3 dan senyawa TiO2 mengacu jurnal [7,8] Puncak tertinggi yang merupakan fasa α-Ti dan senyawa TiO2 pada 2Ѳ sebesar 40,324°.…”

Section: Gambar 14 Kurva Polarisasi Tafel Ti-6al-4v-2nbunclassified

“…Berdasarkan pengamatan dapat diketahui bahwa fasa yang terkandung didalam Ti-6Al-4V-2Nb sesudah pengujian korosi dengan metoda polarisasi adalah fasa α-Ti, fasa β-Ti, senyawa Al 2 O 3 dan senyawa TiO 2 mengacu jurnal [7,8]. Puncak tertinggi yang merupakan fasa α-Ti dan senyawa TiO 2 terdapat pada 2Ѳ sebesar 35,358°.…”

Section: Gambar 19 Hasil Pengujian Xrd Ti-6al-4v-2nb Setelah Uji Korosiunclassified

Perilaku Elektrokimia Paduan Bio Inert Ti-6Al-4V Bahan Implant Yang Di Doping Dengan Nb Dalam Media Minuman Berkarbonasi

Prajitno

Pratama

Pawawoi

2019

JCPE

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Penelitian ini untuk mempelajari pengaruh doping unsur Nb terhadap paduan bioinert Ti-6Al-4V dengan metode elektrokimia sebagai bahan implant dalam media minuman berkarbonasi. Tujuan penelitian adalah untuk mempebaiki biokompatibel paduan Ti-6Al-4V yang telah di doping dengan Nb dalam media minuman berkabonasi. Pembuatan paduan Ti-6Al-4V-xNb (x= 0, 1 dan 2 %wt) dilakukan dengan melebur Ti-6Al-4V dan Nb dalam tungku busur listrik. Perilaku elektrokimia paduan Ti-6Al-4V yang telah di doping dengan unsur Nb di uji menggunakan potensiostat dengan metode polarisasi Tafel dengan waktu perendaman selama 0 menit, 60 menit, dan 120 didalam media minuman berkarbonasi pada temperatur kamar. Hasil data pengujian polarisasi Tafel diolah dengan software Echem Analist V.5.66 sehingga didapatkan besaran laju korosi paduan Ti-6Al-4V dalam media minuman berkarnonasi. Permukaan paduan hasil pengujian polarisasi Tafel dievaluasi dengan difraksi sinar X. Dari hasil penelitian yang telah dilakukan menunjukan bahwa paduan Ti-6Al-4V-xNb (x= 0, 1 dan 2 %wt) akan meningkat biokompatibelnya dengan meningkatnya ketahanan korosi dalam media minuman berkabornasi bila paduan titanium yang di doping dengan Nb dengan jumlah yang lebih besar. Hal tersebut terjadi dikarenakan penambahan Nb pada paduan titanium Ti-6Al-4V terjadi peningkatan transisi dari aktif menjadi pasif. Hasil evaluasi sampel menggunakan difraksi sinar X menujukkan bahwa pada permukaan sampel terdapat lapisan pasif. Dari data di atas dapat disimpulkan bahwa biokompatibel paduan Ti-6Al-4V dalam minuman berkabonasi yang telah di doping dengan Nb unjuk kerjanya akan meningkat.

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Effect of Nb on the Microstructure, Mechanical Properties, Corrosion Behavior, and Cytotoxicity of Ti-Nb Alloys

Cited by 106 publications

References 28 publications

Ellipsometric study of passive and anodic oxide films formed on Ti and Nb electrodes

Ellipsometric study of passive and anodic oxide films formed on Ti and Nb electrodes

UQ eSpace

Perilaku Elektrokimia Paduan Bio Inert Ti-6Al-4V Bahan Implant Yang Di Doping Dengan Nb Dalam Media Minuman Berkarbonasi

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