A comparative study of corrosion resistance of biocompatible coating on titanium alloy and stainless steel

Kaur, Shalinder; Sharma, Shallu; Bala, Niraj

doi:10.1016/j.matchemphys.2019.121923

“…Today, many devices for long-term biomedical applications are constructed on a base of metal, but despite the wide variety of metallic materials available on the market, only a few fulfill the requirement of being biologically compatible with humans, e.g. titanium and its alloys, surgical-grade stainless steel (AISI 316L), and cobalt-chromium alloys 6 , 8 . However, in vivo the interaction of the metal in a physiological environment favors the solubilization of some of the alloyed metals, triggering the migration of ions such as Ni and Cr into the bloodstream 29 .…”

Section: Introductionmentioning

confidence: 99%

ZrN-ZrOxNy vs ZrO2-ZrOxNy coatings deposited via unbalanced DC magnetron sputtering

Cubillos

¹

,

Romero

²

,

Umaña‐Pérez

³

2021

Sci Rep

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ZrN-ZrO$${ }_{x}$$ x N$${ }_{y}$$ y and ZrO$${ }_{2}$$ 2 -ZrO$${ }_{x}$$ x N$${ }_{y}$$ y coatings were deposited on 316L stainless steel substrates via the unbalanced DC magnetron sputtering technique in order to improve their corrosion resistance and evaluate their possible use as a coating biocompatible with bone cells. The composition, structure, morphology, and corrosion resistance were studied by sum means of x-ray photoelectron spectroscopy (XPS), x-Ray diffraction (XRD), scanning electron microscopy (SEM), and atomic force microscopy (AFM). The corrosion resistance was evaluated in 3.5 wt.% NaCl using potentiodynamic polarization (PL) and electrochemical impedance techniques (EIS). The ZrN-ZrO$${ }_{x}$$ x N$${ }_{y}$$ y and ZrO$${ }_{2}$$ 2 -ZrO$${ }_{x}$$ x N$${ }_{y}$$ y coatings exhibited barrier-type protection of the substrate against corrosion. The growth of mouse osteoblast cells was evaluated in the coating that exhibited the greatest resistance to corrosion, ZrO$${ }_{2}$$ 2 -ZrO$${ }_{x}$$ x N$${ }_{y}$$ y , finding that the cell viability was maintained, so this material can be considered to be a candidate for use in osteosynthesis processes.

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“…Titanium alloy has been widely used in many fields because of its high strength-toweight ratio, its excellent mechanical properties and its good corrosion resistance [7][8][9][10][11][12][13][14][15]; among them, the excellent corrosion resistance is attributed to the spontaneous oxide passive film (TiO 2 ) on the surface of titanium alloy [16,17]. The stability of the passive film on the surface of titanium alloy exposed to the working environment depends on its electronic properties, which are closely related to the electrochemical reactivity and the redox reaction at the metal/oxide interface [9].…”

Section: Introductionmentioning

confidence: 99%

First-Principles Study on the Adsorption Characteristics of Corrosive Species on Passive Film TiO2 in a NaCl Solution Containing H2S and CO2

Dong

¹

,

Zhang

²

,

Zhu

³

et al. 2022

Metals

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The adsorption characteristics of corrosive anions (Cl−, HS−, S2−, HCO3− and CO32−) on TiO2 of TC4 titanium alloy in a NaCl solution containing H2S and CO2 were studied by density functional theory (DFT). The stable adsorption configuration of each corrosive species on the TiO2 (110) surface was obtained by geometric optimization, and the electronic structure and interface binding energy were calculated and analyzed. The results showed that the optimal adsorption positions of Cl−, HS−, S2−, HCO3−and CO32− on TiO2 (110) were all bridge positions. There was a strong charge interaction between the negatively charged Cl, S and O atoms in Cl−, HS−, S2−, HCO3− and CO32− and the positively charged Ti atoms of TiO2. The interface bonding was mainly caused by charge movement from around Ti atoms to around Cl, O, S atoms. The energy levels were mainly caused by the electron orbital hybridization of Cl-3p5, S-3p4, O-2p4 and Ti-3d2. All adsorption configurations were chemical adsorption. The order of influence of the five ions on the stability of TiO2 was S2− > CO32− > Cl− > HS− > HCO3−. Finally, a novel corrosion mechanism was proposed to illustrate the dynamic evolution processes of pits.

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“…Titanium and its alloys demonstrate unique and attractive properties such as high strength-to-weight ratio, excellent biocompatibility, formability, and superplasticity, which have resulted in their emergence as an useful candidate material in various fields including space and aircraft, biomedical, and marine industries. [9][10][11][12][13] Among several Ti alloys in the market, Ti6Al4V is one of the mostly used variants having Al-stabilized hexagonal close-packed (HCP) α phase and V-stabilized body-centered cubic (BCC) β phase. [14] Ti6Al4V is considered as a duplex-structured alloy which is heat treatable and exhibits a wide range of microstructures.…”

Section: Introductionmentioning

confidence: 99%

Effect of Spatially Varying Thermokinetics on the Electrochemical Response of Laser Additively Manufactured Ti6Al4V

Ho

¹

,

Mazumder

²

,

Pantawane

³

et al. 2021

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Herein, the spatial variation in the electrochemical behavior of laser powder bed fusion (LPBF)‐fabricated Ti6Al4V alloy is investigated. The electrochemical behavior of LPBF‐printed Ti6Al4V is measured using potentiodynamic polarization and electrochemical impedance spectroscopy at different regions along the build direction. The varying kinetics in electrochemical response is characterized using scanning electron microscopy and X‐ray diffraction, which confirm the variation in (0002) texture in the build plane of LPBF‐printed Ti6Al4V. The thermokinetics of LPBF‐printed Ti6Al4V is understood by developing a multiphysics computational model using the finite‐element method, which is conducive to apprehending the spatial variation in electrochemical response kinetics.

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A comparative study of corrosion resistance of biocompatible coating on titanium alloy and stainless steel

Cited by 19 publications

References 30 publications

ZrN-ZrOxNy vs ZrO2-ZrOxNy coatings deposited via unbalanced DC magnetron sputtering

ZrN-ZrOxNy vs ZrO2-ZrOxNy coatings deposited via unbalanced DC magnetron sputtering

First-Principles Study on the Adsorption Characteristics of Corrosive Species on Passive Film TiO2 in a NaCl Solution Containing H2S and CO2

Effect of Spatially Varying Thermokinetics on the Electrochemical Response of Laser Additively Manufactured Ti6Al4V

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