The comparison of two anodic oxidation methods on Ti-6Al-4V ELI

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F19%3A00334212" target="_blank" >RIV/68407700:21220/19:00334212 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

The comparison of two anodic oxidation methods on Ti-6Al-4V ELI

Original language description

The oxide layers on the surfaces of titanium alloys are important for corrosion resistance and bio-compatibility. The compatibility between the tissue, bone and the implant is realized through the properties of the implants stable oxide layer. This oxide layer is mostly consisting, in the case of titanium alloys, of titanium dioxide. This kind of layers can be prepared by various methods; the oxidizing process and its parameters strongly influencing the properties of a layer. Then the differences in the chemical composition, mechanical properties, structure etc are influencing, among others, the stability, adhesion and bio-comopatibility of a bioimplant. The anodic oxidation of titanium alloys, in proper electrolyte and oxidizing conditions, can lead to creation of oxide layer with certain structure on its surface. This surface structure is characterized of pores which size is in range from tens to hundreds of nanometers. The structured surface can change the interaction of cells (and subsequently the tissue) with the implants surface. In the case of this work the oxide layer was realized on the Ti-6Al-4V ELI specimens by the means of anodic oxidation. The oxidizing process was realized in two electrolytes: acidic (1M H2SO4) and basic (0,5 % NaOH) with voltages between 25 V and 100V, the current density was preset at about 50 mA/cm2 . The prepared anodic oxide layer was then characterized by the surface coloration, the change in surface roughness, the thickness and surface morphology of each oxide layer. The basic behaviour of oxide layer was observed by the submersion in the Hanks balanced salt solution (HBSS).

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

20506 - Coating and films

Project

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Continuities

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů