Effect of additive for preparation of reduced-porosity ceramic layer on Ti-6Al-4 V alloy for orthopaedic and trauma implants

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F21%3A10247721" target="_blank" >RIV/61989100:27360/21:10247721 - isvavai.cz</a>

Alternative codes found

RIV/61989100:27640/21:10247721 RIV/68407700:21220/21:00350134 RIV/61989100:27740/21:10247721

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S2468023021002868" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2468023021002868</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.surfin.2021.101209" target="_blank" >10.1016/j.surfin.2021.101209</a>

Result language

angličtina

Original language name

Effect of additive for preparation of reduced-porosity ceramic layer on Ti-6Al-4 V alloy for orthopaedic and trauma implants

Original language description

The micro-arc oxidation (MAO) method using a pulsed unipolar source was used to prepare coatings suitable for orthopaedic and trauma implants. The application of the MAO pilot plant containing the alkaline electrolyte Na2SiO3.9H2O, NaOH and glycerol additive was studied on a Ti-6Al-4 V alloy while focusing on reducing the pore size and improving the tribological and corrosion properties. The effects of stress, discharge time, duty cycle and the effect of the additive on the morphology of the coating, coating thickness, pore size, chemical and phase composition, wear resistance and corrosion resistance were described. X-ray diffraction (XRD), atomic force microscopy (AFM), scanning electron microscopy (SEM) methods equipped with X-ray energy dispersive spectroscopy (EDX), pin-on-disc, tribometer, potentiodynamic polarisation were used to characterise the coatings. Pulsation of the unipolar source and microdischarge intensity of voltage influenced the growth of the sample surface layer, surface morphology and silicon content in the analysed coating. A significant difference in pore sizes was confirmed when a glycerol-containing electrolyte was applied. The pore size distribution influenced the wear resistance and stability of the coefficient of friction. The corrosion behaviour of the prepared coatings on Ti-6Al-4 V alloy was studied in physiological solutions and evaluated by using potentiodynamic curves. Corrosion resistance was evaluated based on the corrosion potentials, current densities, and polarisation resistance; a significant improvement in corrosion resistance was observed in the coatings prepared in the electrolyte with added glycerol and the presence of smaller pores. (C) 2021

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20500 - Materials engineering

Project

<a href="/en/project/TP01010036" target="_blank" >TP01010036: PRE SEED fund II VSB - Technical university of Ostrava</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

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

Name of the periodical

Surfaces and Interfaces

ISSN

2468-0230

e-ISSN

—

Volume of the periodical

25

Issue of the periodical within the volume

srpen 2021

Country of publishing house

US - UNITED STATES

Number of pages

14

Pages from-to

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UT code for WoS article

000681239500002

EID of the result in the Scopus database

2-s2.0-85107064233