Electrophoretic deposition (EPD) of nano-hydroxyapatite coatings with improved mechanical properties on prosthetic Ti6Al4V substrates

2016 ◽  
Vol 301 ◽  
pp. 94-99 ◽  
Author(s):  
R. Drevet ◽  
N. Ben Jaber ◽  
J. Fauré ◽  
A. Tara ◽  
A. Ben Cheikh Larbi ◽  
...  
2014 ◽  
pp. 1448-1463 ◽  
Author(s):  
Katsumi Yoshida

This chapter reviews the novel fabrication process of continuous SiCf­/SiC composites based on electrophoretic deposition (EPD). EPD process is very effective for achieving relatively homogeneous carbon coating with the thickness of several tens to hundreds nanometers on SiC fibers. Carbon interface with the thickness of at least 100 nm formed by EPD acts effectively for inducing interfacial debonding and fiber pullout during fracture, and the SiCf­/SiC composites show excellent mechanical properties. From these results, it is demonstrated that the fabrication process based on EPD method is expected to be an effective way to control the interfaces of SiCf­/SiC composites and to obtain high-performance SiCf­/SiC composites.


Author(s):  
Gunawarman ◽  
N F Nuswantoro ◽  
D Juliadmi ◽  
H Fajri ◽  
A Budiman ◽  
...  

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Jung Eun Park ◽  
Il Song Park ◽  
Tae Sung Bae ◽  
Min Ho Lee

Titanium (Ti) is often used as an orthopedic and dental implant material due to its better mechanical properties, corrosion resistance, and excellent biocompatibility. Formation of TiO2nanotubes (TiO2NTs) on titanium is an interesting surface modification to achieve controlled drug delivery and to promote cell growth. Carbon nanotubes (CNTs) possess excellent chemical durability and mechanical strength. The use of CNTs in biomedical applications such as scaffolds has received considerable attention in recent years. The present study aims to modify the surface of titanium by anodizing to form TiO2NTs and subsequently deposit CNTs over it by electrophoretic deposition (EPD). Characteristic, biocompatibility, and apatite forming ability of the surface modified samples were evaluated. The results of the study reveal that CNTs coating on TiO2nanotubes help improve the biological activity and this type of surface modification is highly suitable for biomedical applications.


2015 ◽  
Vol 1125 ◽  
pp. 484-488 ◽  
Author(s):  
C.Y. Chong ◽  
Tuty Asma Abu Bakar ◽  
Nor Akmal Fadil ◽  
Rafaqat Hussain

Magnesium and its alloys are potential biodegradable implant materials. However, they are characterized by rapid degradation in the electrolytic environment of the body. This phenomenon might result a sudden implant failure before bone restoration was complete, or inflammation subsided. This research will explore ways to improve the corrosion resistance of AZ31 magnesium alloy by improving the coating layer of hydroxyapatite (HA) through multiple coating layers by an electrophoretic deposition (EPD) process. In this study, the quality of the coating layer was improved by multiple coating processes without using any binders. X-ray diffraction spectrometer (XRD) showed that an amorphous structure of HA was successfully deposited on the AZ31 alloy. Scanning electron microscopy (SEM) has been used to observe that the morphology of the AZ31 alloy coated with multiple layers of HA has a denser coating structure with improved adhesion at the interface as compared to the single coating layer. A denser coating structure with greater bonding between the coating layer and the substrate is expected to protect the substrate from a high corrosion rate, thus resulting in a longer period of biodegradation as in implant in the electrolytic environment.


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