Biocompatibility of sol-gel hydroxyapatite-titania composite and bilayer coatings
Article dans une revue avec comité de lecture
Author
SIDANE, DjahidaRAMMAL, H.BELJEBBAR, A.GANGLOFF, S.C.CHICOT, DidierVELARD, V.KHIREDDINE, HafitKERDJOUDJ, H. 
MONTAGNE, AlexAbstract
Titania-Hydroxyapatite (TiO2/HAP) reinforced coatings are proposed to enhance the bioactivity and corrosion resistance of 316L stainless steel (316L SS). Herein, spin- and dip-coating sol-gel processes were investigated to construct two kinds of coatings: TiO2/HAP composite and TiO2/HAP bilayer. Physicochemical characterization highlighted the bioactivity response of the TiO2/HAP composite once incubated in physiological conditions for 7 days whereas the TiO2/HAP bilayer showed instability and dissolution. Biological analysis revealed a failure in human stem cells adhesion on TiO2/HAP bilayer whereas on TiO2/HAP composite the presence of polygonal shaped cells, possessing good behaviour attested a good biocompatibility of the composite coating. Finally, TiO2/HAP composite with hardness up to 0.6 GPa and elastic modulus up to 18 GPa, showed an increased corrosion resistance of 316L SS. In conclusion, the user-friendly sol-gel processes led to bioactive TiO2/HAP composite buildup suitable for biomedical applications.
Files in this item
Related items
Showing items related by title, author, creator and subject.
-
Article dans une revue avec comité de lecture; ; ; ; ; ; ;MONTAGNE, Alex (Cambridge University Press (CUP), 2017)
In this work, nano, micro, and macro-indentation tests under standard or multicycle loading conditions were performed for studying the mechanical behavior of a crown borosilicate glass sample with the objective to study ...
-
Communication sans acte; ; ; ;MONTAGNE, Alex (2016)
La détermination de l’adhérence d’un béton sur une armature en acier fait très souvent appel à des techniques difficiles à mettre en œuvre et nécessite la plupart du temps une préparation longue et complexe de l’échantillon. ...
-
Article dans une revue avec comité de lecture; ; ; ; ;MONTAGNE, Alex (Springer Verlag/ASM International, 2017)
This study investigated the effectiveness of titania (TiO2) as a reinforcing phase in the hydroxyapatite (HAP) coating and silica (SiO2) single-layer as a bond coat between the TiO2-reinforced hydroxyapatite (TiO2/HAP) ...
-
Multi-scale approach of the instrumented indentation technique on the fracture toughness estimation Communication sans acte; ; ; ; ;MONTAGNE, Alex (SF2M, 2015)
Instrumented Indentation Technique (IIT) is widely used to determine the mechanical properties of materials. The elastic modulus is usually determined by applying the methodology proposed by ...
-
Article dans une revue avec comité de lecture; ; ;COOREVITS, Thierry (Cambridge University Press (CUP), 2017)
The unloading part of a load–displacement curve from instrumented indentation tests is usually approximated by a power law (Oliver and Pharr model), where the load is the dependent variable. This approach generally fits ...