Influence of the electrophoretic deposition route on the microstructure and properties of nano-hydroxyapatite/chitosan coatings on the $Ti-13Nb-13Zr$ alloy
PBN-AR
Instytucja
Wydział Inżynierii Materiałowej i Ceramiki (Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie)
Informacje podstawowe
Główny język publikacji
EN
Czasopismo
Surface & Coatings Technology (35pkt w roku publikacji)
ISSN
0257-8972
EISSN
1879-3347
Wydawca
Elsevier Science SA
DOI
Rok publikacji
2017
Numer zeszytu
Strony od-do
64--79
Numer tomu
324
Link do pełnego tekstu
Identyfikator DOI
Liczba arkuszy
1.14
Autorzy
Pozostali autorzy
+ 6
Słowa kluczowe
EN
corrosion resistance
electrophoretic deposition (EPD)
chitosan
composite coatings
Ti-13Nb-13Zr alloy
hydroxyapatite (HA)
Streszczenia
Język
EN
Treść
In this work, nanocomposite HA/chitosan coatings were electrophoretically deposited (EPD) on a near-β Ti-13Nb-13Zr alloy. The influence of the state of the HA particles introduced to the colloidal solution of chitosan (nc-HA-p as a nanopowder and nc-HA-s as nanoparticles suspended in ethanol), as well as the chemical composition of a multi-component HA-chitosan suspension and EPD parameters, on the homogeneity of coatings has been studied. It was established that the pH value and the chemical composition of the suspension have a substantial effect on the electrokinetic properties of suspended HA and chitosan particles. These are also influenced by the deposition kinetics of EPD and the uniformity of as-deposited coatings. The thickness of the nc-HA-p/chitosan and nc-HA-s/chitosan coatings was up to 750 nm and 1.5 μm, respectively. The nc-HA-s/chitosan coating microstructure consisted of HA nanoparticles, homogeneously embedded in an amorphous chitosan matrix. The nc-HA-p/chitosan coating microstructure was non-homogeneous, composed of HA agglomerates in a chitosan matrix. The presence of thin oxide layer was observed on the coatings/titanium alloy interface. The nc-HA-s/chitosan coating exhibited better adhesion to the titanium alloy substrate than the nc-HA-p/chitosan coating. It was found that the nc-HA-s/chitosan coating improves the electrochemical corrosion resistance of the Ti-13Nb-13Zr alloy in Ringer's solution, as well as its bioactivity and other biological properties.
Cechy publikacji
original article
peer-reviewed
Inne
System-identifier
idp:106100
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