Study of the corrosion resistance and in vitro biocompatibility of PVD TiCN-coated AISI 316 L austenitic stainless steel for orthopedic applications

Antunes, Renato Altobelli; Rodas, Andrea C.D.; Lima, Nelson Batista de; Higa, Olga Zazuco; Costa, Isolda

doi:10.1016/j.surfcoat.2010.08.101

Cited by 97 publications

(43 citation statements)

References 41 publications

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“…This is an indication of the relative stability of the passive film in the electrolyte. The second time constant appears around 1 Hz and is associated with charge transfer reactions at the interface passive film/substrate 28. Phase angles are close to −80° denoting the highly capacitive behavior of the stainless steel specimens.…”

Section: Resultsmentioning

confidence: 97%

Study of the correlation between corrosion resistance and semi‐conducting properties of the passive film of AISI 316L stainless steel in physiological solution

Antunes

Oliveira

Costa

2011

Materials & Corrosion

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In this work the corrosion resistance of AISI 316L biomedical stainless steel was assessed through electrochemical impedance spectroscopy (EIS) measurements in Hanks' solution at 37 °C. Specimens were immersed in the electrolyte during 21 days. Semi‐conducting properties of the passive film naturally formed on the surface of the metallic material during the test were evaluated through the Mott–Schottky approach. The aim was to investigate the correlation between corrosion resistance and semi‐conducting properties in the physiological solution. The corrosion resistance was found to decrease with the immersion time. The density of defects in the passive film increased accordingly as indicated by the Mott–Schottky plots. The passive film presented a semi‐conducting behavior with a duplex character. Above the flat band potential the behavior was typical of an n‐type semiconductor whilst below such value it was typical of a p‐type semiconductor. The results from EIS measurements and Mott–Schottky were in good agreement, suggesting that the corrosion resistance of biomedical stainless steels may be associated with the semi‐conducting properties of the passive films formed during immersion in physiological medium.

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Section: Resultsmentioning

confidence: 97%

Study of the correlation between corrosion resistance and semi‐conducting properties of the passive film of AISI 316L stainless steel in physiological solution

Antunes

Oliveira

Costa

2011

Materials & Corrosion

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“…A good example is performed on orthopedic materials used to produce hip, knee or dental prostheses [1][2][3]. For such application, the coatings are required to be not only chemically stable, in order to produce biocompatible materials, but must also possess good mechanical, tribological and antibacterial properties to prevent implant failure [4].…”

Section: Introductionmentioning

confidence: 99%

Structural and electrochemical characterization of Zr–C–N–Ag coatings deposited by DC dual magnetron sputtering

et al. 2014

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ZrCN coatings with incorporated silver were deposited on 316L stainless steel by dual reactive magnetron sputtering to evaluate the silver influence on the structural properties and corrosion resistance of the films. Samples composition was assessed by electron probe microanalysis.Glow discharge optical emission spectroscopy was used to determine the distribution of silver in the films. Structural characterization was performed by X-ray diffraction and Raman spectroscopy. Corrosion resistance was evaluated by potentiodynamic test and electrochemical impedance spectroscopy. Results revealed enhanced corrosion resistance properties of the coated steel and higher coatings reactivity when incorporated with silver, showing a plausible silver release increment.

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“…Two of the most important parameters in determining the suitability of a material for biomedical applications are its biocompatibility and corrosion resistance [1][2][3] . Regarding these two parameters, pure titanium appears to be almost the perfect biomaterial, but it is still essential to provide high strength or ductility for many surgical and dental applications.…”

Section: Introductionmentioning

confidence: 99%

“…Regarding these two parameters, pure titanium appears to be almost the perfect biomaterial, but it is still essential to provide high strength or ductility for many surgical and dental applications. Hence, materials such as stainless steels [2][3][4] , particularly ASTM F138 and AISI 316L, have been used as alternative materials. The corrosion resistance and hardness of these alloys are inadequate for this application, but if they are submitted to an adequate nitriding process, these properties can be improved [5][6][7][8] .…”

Section: Introductionmentioning

confidence: 99%

Investigating the correlation between some of the properties of plasma nitrided AISI 316L stainless steel

et al. 2013

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When AISI 316L stainless steels are submitted to the nitriding process at temperatures lower than 450 °C, a high nitrogen content expanded austenite phase is formed, which shows higher hardness and higher pitting corrosion resistance compared to the untreated material. As a result, this material becomes adequate for biomedical application. The conditions of the nitriding technique, such as gas mixture, pressure, time and temperature, play an important role in some properties of the modified layer, including: thickness, hardness and N concentration along the layer. This paper explores a set of six samples of AISI 316L, nitrided at different times and temperatures, whose properties show important differences. The aim of this research is to investigate the correlation between the nitrided layer thickness (in the range of 0.77 to 11 µm) with both X-ray patterns characteristics and hardness measurements, which used two distinct loads. The results of this study show that: whereas the 3.6 gf load was suitable to measure the real hardness for four of the nitrided layers showing thickness ≥ 2.9 µm, the 50 gf load measured a substrate contribution, probably even for the highest thickness, 11 µm. Moreover, analyzing different reflections of the X-ray patterns showed evidence of the clear consistency between the X-Ray depths and the nitrided layer thicknesses: if the layer thickness is lower than the penetration depth of X-rays, two phases (austenite and expanded substrate) are present. If the layer thickness is higher, only the austenite is observed. Finally, concerning the citotoxicity property, all the samples, nitrided or not, were approved in the test for biocompatibility, indicating their potential use for biomedical applications.

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Study of the corrosion resistance and in vitro biocompatibility of PVD TiCN-coated AISI 316 L austenitic stainless steel for orthopedic applications

Cited by 97 publications

References 41 publications

Study of the correlation between corrosion resistance and semi‐conducting properties of the passive film of AISI 316L stainless steel in physiological solution

Study of the correlation between corrosion resistance and semi‐conducting properties of the passive film of AISI 316L stainless steel in physiological solution

Structural and electrochemical characterization of Zr–C–N–Ag coatings deposited by DC dual magnetron sputtering

Investigating the correlation between some of the properties of plasma nitrided AISI 316L stainless steel

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