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Tytuł pozycji:

Pulsed electrodeposition of Ag + doped prosthetic Fluorohydroxyapatite coatings on stainless steel substrates.

Tytuł:
Pulsed electrodeposition of Ag doped prosthetic Fluorohydroxyapatite coatings on stainless steel substrates.
Autorzy:
Bir F; Laboratoire de Génie de l'Environnement, Département de Génie des Procédés, Faculté de Technologie, Université de Béjaïa, 06000, Béjaïa, Algeria. Electronic address: .
Khireddine H; Laboratoire de Génie de l'Environnement, Département de Génie des Procédés, Faculté de Technologie, Université de Béjaïa, 06000, Béjaïa, Algeria.
Mekhalif Z; Laboratory of Chemistry and Electrochemistry of Surfaces, NISM Institute, University of Namur, Rue de Bruxelles 61, B-5000 Namur, Belgium.
Bonnamy S; Interfaces Confinement Matériaux et Nanostructures, Centre National de la Recherche Scientifique, Université d'Orléans, 1b, rue de la Férollerie, CS 40059, 45071 Orléans cedex 2, France.
Źródło:
Materials science & engineering. C, Materials for biological applications [Mater Sci Eng C Mater Biol Appl] 2021 Jan; Vol. 118, pp. 111325. Date of Electronic Publication: 2020 Aug 03.
Typ publikacji:
Journal Article
Język:
English
Imprint Name(s):
Original Publication: Amsterdam : Elsevier
MeSH Terms:
Silver*/pharmacology
Stainless Steel*
Coated Materials, Biocompatible ; Corrosion ; Electroplating ; Hydroxyapatites
Contributed Indexing:
Keywords: Antibacterial properties; Biomaterials; Corrosion resistance; Pulsed electrodeposition; Silver doped Fluorohydroxyapatite (Ag-FHA)
Substance Nomenclature:
0 (Coated Materials, Biocompatible)
0 (Hydroxyapatites)
0 (fluorohydroxyapatite)
12597-68-1 (Stainless Steel)
3M4G523W1G (Silver)
Entry Date(s):
Date Created: 20201201 Date Completed: 20210514 Latest Revision: 20210514
Update Code:
20240105
DOI:
10.1016/j.msec.2020.111325
PMID:
33254962
Czasopismo naukowe
In order to reinforce the antibacterial character of fluorohydroxyapatite (FHA) prosthetic layers on 316L stainless steel (316L SS), Ag + ions (an antibacterial agent) are included in the electrodeposition medium to be incorporated in the FHA layers created by pulsed protocol. The doped coatings (Ag-FHA) with different concentrations of silver ions (5, 10, 20, 40 and 100 ppm) were characterized electrochemically (polarization curves and electrochemical impedance spectroscopy) in simulated body fluid (SBF) solution and microbiologically against two pathogenic bacteria (Staphylococcus aureus and Escherichia coli). XPS, EDX and Raman spectroscopies were used to complement these evaluations. Whatever the concentration of incorporated Ag + ions, the FHA morphology, structure and composition are not affected. The XPS and EDX results confirm the Ag + presence within the apatite crystals, mostly concentrated at the extreme surface of the coatings. They also show the lowering of the stoichiometry of the coatings, confirmed by Raman analyses. The corrosion studies indicate that the prosthetic coatings act as a barrier against corrosion of the 316L SS alloy. Moreover, the results of the microbiological tests show that a content of 40 ppm of silver, introduced into the prosthetic coatings, inhibits the bacterial growth. Lower concentrations showing only a partial inhibition. In conclusion, using a pulsed current mode in the electrodeposition processes generates Ag-FHA/316L SS systems suitable for biomedical applications.
(Copyright © 2020 Elsevier B.V. All rights reserved.)

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