low water-wettability and oxidation resistance of graphite have limited its application in carbon containing refractory castables. the aims of this study were improvement of water-wettability and the oxidation resistance of natural flaky graphite by applying an oxide coating on its surface. to develop the coating, magnesium aluminate spinel sol was formulated via a citrate-nitrate route and gra...

objective: osseous defects around dental implants are often seen when implants are placed in areas with inadequate alveolar bone, or around failing implants. bone regeneration in these areas using bone grafts or its substitutes may improve dental implants prognosis. the aim of this study was to prepare and characterize the bioactive glass nanopowder and development of its coating for treatment ...

Calcium silicate (CS) ceramic is a good coating candidate for biomedical implants to improve biocompatibility and accelerate early osseointegration. However, the poor fracture toughness and wear resistance of this ceramic material restricts the long-term performance of implants. In this study, graphene plates (GPs) were used as reinforcement to improve the mechanical properties of CS coating. C...

Topographical variations of the ependymal surface of the whole brain ventricular system of Cebus apella, a wild Brazilian species, were studied at the scanning electron microscope after CO2 critical point drying and carbon-gold coating. Certain selected areas were also studied at the transmission electron microscope, following standard technical procedures. We observed distinct patterns in the ...

Abstract This paper reports significant enhancement of corrosion resistance and electrical properties waterborne epoxy coatings through additions ceria modified graphene. Results showed that particles were uniformly distributed covalently bonded onto the surface A dense interface layer was formed between graphene matrix by aliphatic ether bonds. The composite coating with a content 0.5 wt% exhi...

The aim of the present work is to study influence technological parameters ion-plasma treatment (IPT) on functional properties a TiNi shape memory alloy and its biocompatibility. object was Ti–50.8 at. % Ni alloy, widely applied in medical devices. IPT carried out by vacuum-arc evaporation titanium cathode at different values bias potential (0, –100, –500 V), followed TiN deposition. after were...

Biocompatibility of biomedical devices can be improved by endothelialization of blood-contacting parts mimicking the vascular endothelium's function. Improved endothelialization might be obtained by using biomimetic coatings that allow local sustained release of biologically active molecules, e.g. anti-thrombotic and growth-inducing agents, from nanoliposomes. We aimed to test whether incorpora...