Effect of sodium-ion implantation on the corrosion resistance and bioactivity of titanium (original) (raw)
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The effect of sodium-ion implantation on the properties of titanium
Journal of Materials Science: Materials in Medicine, 2008
This paper deals with the surface modification of titanium by sodium-ion implantation and with the effect of this modification on structure, corrosion resistance, bioactivity and cytocompatibility. The Na ions were implanted with doses of 1 9 10 17 and 4 9 10 17 ions/cm 2 at an energy of 25 keV. The chemical composition of the surface layers formed during the implantation was examined by secondary-ion mass spectrometry (SIMS) and X-ray photoelectron spectroscopy (XPS), and their microstructure-by transmission electron microscopy (TEM). The corrosion resistance was determined by electrochemical methods in a simulated body fluid (SBF) at a temperature of 37°C, after exposure in SBF for various times. The surfaces of the samples were examined by optical microscopy, by scanning electron microscopy (SEM-EDS), and by atomic force microscopy (AFM). Biocompatibility of the modified surface was evaluated in vitro in a culture of the MG-63 cell line and human osteoblast cells. The TEM results indicate that the surface layers formed during the implantation of Na-ions are amorphous. The results of the electrochemical examinations obtained for the Na-implanted titanium samples indicate that the implantation increases corrosion resistance. Sodium-ion implantation improves bioactivity and does not reduce biocompatibility.
Effect of calcium-ion implantation on the corrosion resistance and biocompatibility of titanium
Biomaterials, 2001
This work presents data on the structure and corrosion resistance of titanium after calcium-ion implantation with a dose of 10Ca>/cm. The ion energy was 25 keV. Transmission electron microscopy was used to investigate the microstructure of the implanted layer. The chemical composition of the surface layer was examined by XPS and SIMS. The corrosion resistance was examined by electrochemical methods in a simulated body #uid (SBF) at a temperature of 373C. Biocompatibility tests in vitro were performed in a culture of human derived bone cells (HDBC) in direct contact with the materials tested. Both, the viability of the cells determined by an XTT assay and activity of the cells evaluated by alkaline phosphatase activity measurements in contact with implanted and non-implanted titanium samples were detected. The morphology of the cells spread on the surface of the materials examined was also observed. The results con"rmed the biocompatibility of both calcium-ion-implanted and non-implanted titanium under the conditions of the experiment. As shown by TEM results, the surface layer formed during calcium-ion implantation was amorphous. The results of electrochemical examinations indicate that calcium-ion implantation increases the corrosion resistance, but only under stationary conditions; during anodic polarization the calcium-ion-implanted samples undergo pitting corrosion. The breakdown potential is high (2.7}3 V).
Analytical and Bioanalytical Chemistry, 2005
The paper compares the effects of various surface modifications, ion implantation, alkaline treatment and anodic oxidation, upon the corrosion resistance and bioactivity of titanium. The chemical composition of the surface layers thus produced was determined by XPS, SIMS and EDS coupled with SEM. The structure of the layers was examined by TEM, and their phase composition by XRD. The corrosion resistance was determined by electrochemical methods after the samples were exposed to the test conditions for 13 h. The bioactivity of titanium was evaluated in a simulated body fluid at a temperature of 37°C after various exposure time.
MRS Proceedings, 2005
This work presents data on topographical structure, chemical surface composition, physicochemical properties and corrosion resistance of medical grade titanium after ion implantation. Pure commercial titanium has been implanted with 30 keV Na-, Ca-and P-ions at fluences of 2.0 x 10 17 cm -2 and 1.5 x 10 17 cm -2 , respectively. Some of the samples were heat treated at 600 °C for 40 min. Atomic force microscopy (AFM) was used for surface analysis. The chemical composition was investigated using Rutherford backscattering spectrometry (RBS). Physicochemical investigations were carried out using contact angle measurements to determine the polarity of the modified titanium surfaces. Moreover, the electrokinetic zeta potentials on a physiological pH value have been determined. Finally, the corrosion resistance was examined in simulated body fluid (SBF) containing 4 g/l bovine serum albumin (BSA) using cyclic voltametry.
A Review on Corrosion of Metallic Implants: Titanium
2020
1Sanyukt Kumar Manderna, Dept. of Mechanical Engineering, Guru Jambheshwar University of Science and Technology 2Professor Puneet Katyal, Dept. of Mechanical Engineering, Guru Jambheshwar University of Science and Technology 3Professor Munish Gupta, Dept. of Mechanical Engineering, Guru Jambheshwar University of Science and Technology 4Vijender Gill, Dept. of Mechanical Engineering, Guru Jambheshwar University of Science and Technology Hissar, Haryana, India ------------------------------------------------------------------------***------------------------------------------------------------------------Abstract Corrosion is characterised as the destructive attack of a metal by chemical or electrochemical reaction within its environment with water, oxygen, sulphur and so on. Human bodies use metals and alloys as biomaterials for decades to fix, substitute, or uplift tissues and structures. The corrosion activities of these materials have to deal with the metals which are implanted wi...
Effect of calcium-ion implantation on the corrosion resistance and bioactivity of the Ti6Al4V alloy
Vacuum, 2007
The corrosion resistance and bioactivity of Ti6Al4V alloy after calcium-ion implantation were examined. Polished samples were implanted with a dose of 10 17 Na + /cm 2 at a beam energy of 25 keV. The chemical composition of the surface layer formed during the implantation was determined by XPS and SIMS. The bioactivity of the samples was evaluated by soaking them in a simulated body fluid (SBF) at 37 1C for 168 and 720 h. The corrosion resistance in SBF at 37 1C was determined by electrochemical methods after exposure in SBF for various times. The surfaces of the samples before and after examinations were observed by optical microscopy, SEM-EDS and AFM.
In Vitro Corrosion Behaviour of Some Titanium Alloys Designated to Oral Implantology
2015
The paper presents a study on the corrosion behavior of some biocompatible titanium alloys designated for the use in dental implantology field. The purpose of the study was to determine the corrosion behavior of three titanium alloys with original composition: Ti-36.5Nb-4.5Zr-3Ta-0.16O, Ti-31.7Nb-6.21Zr-1.4Fe-0.16O and Ti-20Nb-5Ta, in the following simulated physiological environments: artificial saliva and Hank’s solution, using the linear polarization technique. In artificial saliva Ti-36.5Nb-4.5Zr-3Ta-0.16O alloy showed the best corrosion behavior, followed by Ti-20Nb-5Ta and Ti-31.7Nb-6.21Zr-1.4Fe-0.16O alloys. In Hank’s solution, Ti-20Nb-5Ta alloy had the best corrosion resistance, followed by the other two alloys, with relatively close values.
Journal of Materials Processing Technology, 2003
The paper presents the results of examinations of how the oxidation of titanium in a solution containing calcium and phosphorus ions affects the corrosion resistance and bioactivity of titanium. Prior to examination, the samples were exposed in the simulated body fluid (SBF) at the temperature of 37 • C for 13 and 1000 h. Then the corrosion resistance was examined by electrochemical methods in SBF at a temperature of 37 • C. The chemical composition of the surface layers was determined by photoelectron spectroscopy (XPS). The examinations have shown that after the oxidation the corrosion resistance increases. After long-term exposures, calcium phosphates were found on the sample surface, and their amount was bigger on the oxidised surfaces.
Bioactivity of titanium following sodium plasma immersion ion implantation and deposition
Biomaterials, 2005
Bio-activation of titanium surface by Na plasma immersion ion implantation and deposition (PIII&D) is illustrated by precipitation of calcium phosphate and cell culture. The bioactivity of the plasma-implanted titanium is compared to that of the untreated, Na beam-line implanted and NaOH-treated titanium samples. Our data show that the samples can be classified into two groups: non-bioactive (untreated titanium and beam-line Na implanted titanium) and bioactive (Na-PIII&D and NaOH-treated titanium). None of the four types of surfaces exhibited major cell toxicity as determined by lactate dehydrogenase (LDH) release. However, the LDH release was higher on the more bioactive PIII and NaOH-treated surfaces. From a morphological point of view, cell adherence on the NaOH-treated titanium is the best. On the other hand, the cell activity and protein production were higher on the non-bioactive surfaces. The high alkaline phosphatase activity per cell suggests that the active surfaces support an osteogenic differentiation of the bone marrow cells at the expense of lower proliferation. The use of Na-PIII&D provides an environmentally cleaner technology to improve the bioactivity of Ti compared to conventional wet chemical processes. The technique is also particularly useful for the uniform and conformal treatment of medical implants that typically possess an irregular shape and are difficult to treat by conventional ion beam techniques.
Procedia Materials Science, 2014
Apart from ceramics, polymers, and composites, metallic materials rank distinguished in the field of biomaterials. Recently, titanium (Ti) based materials are attracting much interest as implantable materials because of their superior corrosion resistance, better mechanical properties such as remarkably high specific strength, low elastic modulus, and excellent biocompatibility compared to other competing biomaterials like stainless steel, Co-Cr alloys and nitinol alloys. Implantable Ti based materials must have high corrosion resistance to withstand the degradation which results from the reactions with the hostile body environment and does not result in adverse biological troubles in the body. At the same time, Ti materials must be stable and retain their properties for a long time reliably. The present article discusses the importance of creation of stable, compact and continuous oxide layers on the surface of Ti materials has been strongly effective to combat corrosion in aggressive body fluid. In this review, the traditional and advanced surface modification techniques that be used to increase the bioactivity of the Ti surfaces and in turn to improve the corrosion behaviour have also been discussed at length.