XPS characterisation of surface modified Ni-Ti shape memory alloy

Green, S.M.; Grant, David M.; Wood, J. V.

doi:10.1016/s0921-5093(96)10563-3

Cited by 73 publications

(35 citation statements)

References 10 publications

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“…Biological aspects are crucial and also the surface plays the most important role in contact with tissue. The most important factors that are underlined in biomedical implant evaluation are chemical composition of the surface and its topography (Green et al 1997;Wen et al 1998;Filip et al 2001;Chen et al 2003Chen et al , 2004Cui et al 2005;Garcia et al 2006;Sul et al 2006;Kawakita et al 2007;Byon et al 2007). However, consideration about dental, maxillofacial and orthopaedic implants should include aspects connected with implant insertion, bearing forces and frictional interaction between the implant and the surrounding musculoskeletal tissue.…”

Section: Discussionmentioning

confidence: 99%

“…Electrochemical and chemical treatment in conjunction with heat treatment improved the bioactivity through the alteration to the topography, structure and chemical composition of the surface. For nickel-titanium alloys, thermal oxidation and high-voltage oxidation (Green et al 1997;Firstov et al 2002;Sul et al 2006;Kawakita et al 2007) were shown to have an influence on the topographical features of the surface and its chemical composition. These properties were reported to be highly dependent on parameters such as temperature or anodization conditions.…”

Section: Introductionmentioning

confidence: 99%

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Nanomechanical evaluation of nickel–titanium surface properties after alkali and electrochemical treatments

Chrzanowski

Neel

Armitage

et al. 2008

J. R. Soc. Interface.

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In this paper, the suitability of alkali treatment followed by heat treatment at 6008C, and spark oxidation for nickel-titanium, intended for medical applications such as pins, wires and clamps, was evaluated on the basis of nanomechanical and wear testing. In addition, the chemical composition and topography of the surface layer, wetting ability, corrosion resistance and influence of the heat treatment on structure of the alloy were also investigated. The results showed that the highest hardness was observed for alkali-treated samples, and this could be correlated with the structure of the sample that contained martensite and a higher phase transformation temperature. This treatment caused a very large increase of nickel in the top layer and decreased resistance in pitting corrosion. These results disqualified the treatment to be considered as useful for medical applications. On the other hand, the hardness of the oxidized samples was at the same level as that obtained for ground reference samples. Moreover, the oxide layer was enriched with phosphorus, and it was predominantly composed of TiO 2 and phosphorus oxides. This 3.1 mm thick layer had good adhesion to the substrate as indicated by scratch testing and wear resistant in nanowear testing. However, the oxidation did not significantly increase the corrosion resistance of the alloy compared with reference samples.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nanomechanical evaluation of nickel–titanium surface properties after alkali and electrochemical treatments

Chrzanowski

Neel

Armitage

et al. 2008

J. R. Soc. Interface.

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“…Then, the structural analysis of the thin film layer was conducted by sputtering and XPS [12]. From the results of compositional analysis toward the depth direction by XPS shown in Fig.…”

Section: Characterization Of Modified Surfacementioning

confidence: 99%

Improvement of corrosion resistance and biocompatibility of medical nickel–titanium alloys through forming TiO₂ thin film

Kimura

2017

WIT Transactions on State-of-the-Art in Science and Engineering

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Nickel-titanium alloys have been investigated for applications to various surgical procedures. However, little is known about the toxicity of Ni-elements and the actual conditions of surface modification of Ni-Ti alloy for preventing the toxicity of Ni. In this study, the corrosion resistance of Ni-Ti alloys was improved through producing a thin TiO 2 film by conducting in-air oxidation and reactive sputtering. These thin films were characterized using field emission type scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and atomic force microscopy. Using the polarization curves obtained by electro-chemical measurements in quasi-living body environment, the corrosion resistance of Ni-Ti super elastic alloy was evaluated. In addition, the effect of an air-oxidized Ni-Ti alloy specimen upon cell multiplication and morphological change of cell were investigated by culturing cells for 72 hrs on a Ni-Ti alloy specimen surface with TiO2 thin film. From these considerations, some trials for establishing a method for TiO 2 thin film formation on the surface of Ni-Ti alloy were conducted from the view point of improving biocompatibility.

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“…Then, the structural analysis of the thin film layer was conducted by sputtering and XPS [12]. From results of compositional analysis toward depth direction by XPS shown in Figure 2 the composition of extreme thin surface of specimen was understood.…”

Section: Characterization Of Modified Surfacementioning

confidence: 99%

Improvement of corrosion resistance and bio compatibility of medical Nickel-Titanium alloys through forming TiO₂thin film

Kimura

2011

Surface Effects and Contact Mechanics X

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Nickel-Titanium alloys have been investigated for applying to various surgical procedures. However, little is known about the toxicity of Ni-elements and the actual conditions of surface modification of Ni-Ti alloy for preventing the toxicity of Ni. In this study, the corrosion resistance of Ni-Ti alloys was improved through making TiO 2 thin film by conducting in air oxidation and reactive sputtering. These thin films were characterized using FE-SEM, XRD, XPS and AFM. And judging from the polarization curves obtained by electrochemical measurement in a quasi-living body environment, corrosion resistance of Ni-Ti super elastic alloy was evaluated. In addition, the effect of air oxidized Ni-Ti alloy specimen upon cell multiplication and morphological change of cell were investigated by culturing cell 72 hrs on Ni-Ti alloy specimen surface with TiO 2 thin film. From these considerations, some trials for establishing a method for TiO 2 thin film formation on the surface of Ni-Ti alloy were conducted from the view point of improving biocompatibility.

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XPS characterisation of surface modified Ni-Ti shape memory alloy

Cited by 73 publications

References 10 publications

Nanomechanical evaluation of nickel–titanium surface properties after alkali and electrochemical treatments

Nanomechanical evaluation of nickel–titanium surface properties after alkali and electrochemical treatments

Improvement of corrosion resistance and biocompatibility of medical nickel–titanium alloys through forming TiO₂ thin film

Improvement of corrosion resistance and bio compatibility of medical Nickel-Titanium alloys through forming TiO₂thin film

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XPS characterisation of surface modified Ni-Ti shape memory alloy

Cited by 73 publications

References 10 publications

Nanomechanical evaluation of nickel–titanium surface properties after alkali and electrochemical treatments

Nanomechanical evaluation of nickel–titanium surface properties after alkali and electrochemical treatments

Improvement of corrosion resistance and biocompatibility of medical nickel–titanium alloys through forming TiO2 thin film

Improvement of corrosion resistance and bio compatibility of medical Nickel-Titanium alloys through forming TiO2thin film

Contact Info

Product

Resources

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Improvement of corrosion resistance and biocompatibility of medical nickel–titanium alloys through forming TiO₂ thin film

Improvement of corrosion resistance and bio compatibility of medical Nickel-Titanium alloys through forming TiO₂thin film