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allied
academies
November 22-23, 2018 | Paris, France
Journal of Materials Science and Nanotechnology | Volume: 2
Materials Physics and Materials Science
International Conference on
Bioactive Ag
-
, Zn
-
and Cu
-
incorporated calcium phosphate coatings: Microstructure, physicochemical
and biological properties
Mariya B Sedelnikova
Institute of Strength Physics and Materials Science of SB RAS, Russia
B
io composites combining a metal base and a bioactive
calcium phosphate coating are promising materials
for traumatology, orthopaedics and dental implantology.
A serious problem in biomedicine is bacterial infection of
medical implants. It is necessary to develop biocoatings with
high antibacterial activity, biosafety, and Osseo conductivity.
The use of the microelements such as Ag-, Zn- and Cu- in trace
amounts allows to produce a directional antimicrobial effect in
the postoperative period and tominimize the risk of pathogenic
microorganismevolution.Microarc oxidation is a relatively new
surface treatment technique, being famous for its ability to
form in-situ grown porous and homogeneous coatings on the
surface of valve metals, such as Ti, Al, Mg, Nb, their alloys, etc.
In present researchwork the study of the CaP bio coatings with
Ag, Zn and Cu incorporation produced by a (MAO) method on
the titanium substrate were carried out. The coatings were
formed in the anodic potentiostatic regime for 5–10min under
the applied voltages of 200–450V. The Zn- and Cu-incorporated
coatings were deposited in the electrolyte containing 30%
aqueous solutionof phosphoric acid, calciumcarbonate and Zn-
or Cu-substituted hydroxyapatite (Ca
9.9
Zn
0.1
(PO
4
)
6
(OH)
2
or Ca
9.9
Cu
0.1
(PO
4
)
6
(OH)
2
). To synthesize theAg-incorporatedcoatings the
electrolyte containing Na
2
HPO
4
, NaOH, AgNO
3
and β-Ca
3
(PO
4
)
2
powder was used.
Thecomparative investigationof theAg-, Zn- andCu-incorporated
CaP coatings showed that the electrolyte composition influences
considerably on themorphology, structure and properties of the
coatings.Inaddition,theappliedvoltageeffectssignificantlyonthe
coatingphasecomposition,thicknessandroughness.Introduction
of Ag, Zn and Cu microelements into the coatings provides the
formationof their antibacterial properties.
Speaker Biography
Mariya B Sedelnikova has completed her PhD and received the degree of technical
sciencesattheageof45yearsfromTomskPolytechnicUniversity,Russia.She isthesenior
researcher of Institute of Strength Physics and Materials Science of SB RAS. She has over
100 publications.
e:
smasha5@yandex.ru