Electrochemical Behavior of Titanium

Kelly, Eugene J.

doi:10.1007/978-1-4615-7458-3_5

Cited by 83 publications

(69 citation statements)

References 136 publications

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“…The above results demonstrate the usefulness of the HHP method for bonding HA and Ti in order to produce a bioactive layer in biomaterials. [Kelly, 1982]. In this sense, the surface composition constantly changes according to the environment.…”

Section: Ha/ti Bonding and Its Adhisive Propertiesmentioning

confidence: 99%

“…In this sense, the surface composition constantly changes according to the environment. The film on titanium consists of amorphous or low-crystalline and non-stoichiometric TiO 2 [Kelly, 1982]. The surface oxide film of titanium just after polishing in water contains not only Ti 4+ but also Ti 3+ and Ti 2+ [Beck, 1973;Kelly, 1982].…”

Section: Ha/ti Bonding and Its Adhisive Propertiesmentioning

confidence: 99%

“…The film on titanium consists of amorphous or low-crystalline and non-stoichiometric TiO 2 [Kelly, 1982]. The surface oxide film of titanium just after polishing in water contains not only Ti 4+ but also Ti 3+ and Ti 2+ [Beck, 1973;Kelly, 1982]. Hydrated phosphate ions are adsorbed by a hydrated titanium oxide surface during the release of protons [Hanawa, 1992].…”

Section: Ha/ti Bonding and Its Adhisive Propertiesmentioning

confidence: 99%

“…The OM oxygen corresponds to O 2-ion in oxyhydroxide and/or oxide, and the OH oxygen is oxygen linked to protons in the surface film, being composed of OH -ions and bound water in the surface films. As shown in Fig.6(a) and (b), The decomvoluted XPS spectra of the O 1s region contained three peaks originating from oxide (O 2-), hydroxide or hydroxyl groups (OH -), and hydrate and/or adsorbed water (H 2 O) [Beck,1973;Kelly, 1982]. Calculated fitting curves area of the samples finished in air and water environment was summarized in table.1.…”

Section: Ha/ti Bonding and Its Adhisive Propertiesmentioning

confidence: 99%

See 3 more Smart Citations

Porous Apatite Coating on Various Titanium Metallic Materials via Low Temperature Processing

Onoki¹

2011

Biomaterials Science and Engineering

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Section: Ha/ti Bonding and Its Adhisive Propertiesmentioning

confidence: 99%

Section: Ha/ti Bonding and Its Adhisive Propertiesmentioning

confidence: 99%

Section: Ha/ti Bonding and Its Adhisive Propertiesmentioning

confidence: 99%

Section: Ha/ti Bonding and Its Adhisive Propertiesmentioning

confidence: 99%

See 2 more Smart Citations

Porous Apatite Coating on Various Titanium Metallic Materials via Low Temperature Processing

Onoki¹

2011

Biomaterials Science and Engineering

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“…Passive surfaces in contact with electrolytes undergo a continuous process of partial dissolution and re-precipitation from the microscopic viewpoint. 5) Therefore, the composition of the surface oxide film changes according to the environment.…”

Section: Introductionmentioning

confidence: 99%

Characterization of the Surface Oxide Film on an Fe-Cr-Mo-N System Alloy in Environments Simulating the Human Body

et al. 2003

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The objective of this study was to characterize the surface oxide film on nickel-free austenitic stainless steel, Fe-24Cr-2Mo-1N in mass% , with nitrogen absorption located in various environments, to estimate the reconstruction of the surface oxide film in the human body. The specimens were metallographically polished in deionized water, autoclaved after polishing, immersed in Hanks' solution for 7 days after polishing and autoclaving, immersed in Eagle's minimum essential medium containing fetal bovine serum for 7 days after polishing and autoclaving, and incubated with L929 fibroblasts for 7 days after polishing and autoclaving. L929 fibroblasts cultured on the specimen were removed with a flow of deionized water before surface analysis. X-ray photoelectron spectroscopy was performed to determine the composition of the surface oxide film and substrate and the thickness of the surface oxide film. The depth profiles of elements in the surface region were also characterized using Auger electron spectroscopy in combination with argon-ion-sputtering. The surface oxide film on the nickel-free austenitic stainless steel with nitrogen absorption, Fe-24Cr-2Mo-1N, polished mechanically in deionized water, consisted of iron and chromium oxides containing small amount of molybdenum oxide. A large amount of carbon, nitrogen, oxygen, and sulfur originating from proteins was detected after immersion in the medium and incubation with the cells. Sulfur existed as sulfide or sulfite. Calcium phosphate was formed on the surface oxide film after immersion in the Hanks' solution and medium and incubation with the cells.

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Step-polarization impedance spectroscopy of implant alloys in physiologic solutions

Gilbert

1998

J. Biomed. Mater. Res.

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A novel test method is presented whereby the polarization behavior and impedance characteristics of an electrochemical interface can be determined simultaneously from potential-step current transient responses. In this test, small incremental steps in potential are applied to an electrochemical interface and the current transient response is collected digitally. Then, the data are subjected to a numerical Laplace transform technique to obtain the frequency-dependent admittance (reciprocal impedance) of the interface. From this analysis, several interesting and relevant parameters, including the high- and low-frequency resistances, interfacial capacitance, and polarization behavior, can be obtained. The mathematical basis for this technique is presented and the methodology is applied to three implant alloys (titanium, Co-Cr-Mo, and platinum). Electrochemical tests were performed in 0.9% NaCl at room temperature. Starting at an initial negative potential, the samples were stepped in 50-mV increments every 10 or 100 s up to a maximum potential and then reversed back to the starting potential. The impedances were calculated and used to evaluate the behavior. From these tests, one can determine the potential dependence of the oxide film thickness as well as the changes in the underlying electrochemical state of the interfaces with potential. This technique is inexpensive and easily applied to any electrochemical system, and yields significantly more electrochemical information than either anodic polarization or electrochemical impedance spectroscopy alone.

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Electrochemical Behavior of Titanium

Cited by 83 publications

References 136 publications

Porous Apatite Coating on Various Titanium Metallic Materials via Low Temperature Processing

Porous Apatite Coating on Various Titanium Metallic Materials via Low Temperature Processing

Characterization of the Surface Oxide Film on an Fe-Cr-Mo-N System Alloy in Environments Simulating the Human Body

Step-polarization impedance spectroscopy of implant alloys in physiologic solutions

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