Effect of additive for preparation of reduced-porosity ceramic layer on Ti-6Al-4 V alloy for orthopaedic and trauma implants
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27740%2F21%3A10247721" target="_blank" >RIV/61989100:27740/21:10247721 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21220/21:00350134 RIV/61989100:27360/21:10247721 RIV/61989100:27640/21:10247721
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>
Alternative languages
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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Classification
Type
J<sub>imp</sub> - 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
Result continuities
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)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Surfaces and Interfaces
ISSN
2468-0230
e-ISSN
2468-0230
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
nestrankovano
UT code for WoS article
000681239500002
EID of the result in the Scopus database
2-s2.0-85107064233