The mechanical and electrochemical behavior of the surface oxides of CoCrMo and Ti6Al4V alloys during fracture and repassivation play an important role in the corrosion of the taper interfaces of modular hip implants. This behavior was investigated in one group of CoCrMo and Ti6Al4V alloy samples passivated with nitric acid and another group coated with a novel TiN/AlN coating. The effects of m...

Fluoride-incorporated plasma electrolytic oxidation (PEO) coating was fabricated on biodegradable AZ31 alloy. The surface morphologies and phases were investigated by scanning electron microscopy and X-ray diffraction. The effect of fluoride incorporation in coatings on corrosion behaviour was investigated in simulated body fluid and in vitro cytocompatibility of the coatings was also studied b...

A smart hybrid conversion coating has been developed. Modifications of coating solutions with poly-hydroxyl organic materials to reduce the usual mud cracking pattern characteristics of chromate conversion coatings (CCCs) and improve its ability to release inhibitors to corroding sites have been achieved. The smart functionalised chromate conversion coating (SFCCC), developed on aluminium subst...

Objective: In the present work, strontium (Sr) was incorporated into TiO2 (Sr-TiO2) coatings on titanium by Micro-arc oxidation (MAO) technique in the Ca, P, Sicontaining electrolyte to obtain the implant with good bioactivity. Methods: The surface topography, phase and element composition were characterized by scanning electron microscopy, X-ray diffraction and energy dispersive spectrometer, ...

Carbon nanotubes (CNTs) have excellent chemical durability, mechanical strength and electrical properties. Therefore, there is interest in CNTs for not only electrical and mechanical applications, but also biological and medical applications. We coated titanium, a common material for dental implants, with multiwalled carbon nanotubes (MWCNTs). First, titanium was aminated and covered with colla...

Organic–inorganic multilayer permeation barriers are emerging as a promising solution to the stringent barrier requirement of flexible electronics. Yet the mechanical failure of the multilayer permeation barriers could be fatal to their barrier performance. We study two co-evolving failure mechanisms of the multilayer permeation barriers under tension, namely, the cracking of the inorganic oxid...

Diamond-coated tools often fail due to coating graphitization and delamination caused by poor adhesion, large contact stress, thermochemical reactions. To address these issues, this research utilized a combination of micro-nano double-layer diamond coating, WS2 micro-textures. The inhibits the through transfer film mechanism, while micro-textures nanocrystalline store WS2, resulting in prolonge...

16008 (2014). 111 Meyers SR, Kenan DJ, Khoo X, Grinstaff MW. A bioactive stent surface coating that promotes endothelialization whilepreventing platelet adhesion. Biomacromolecules 12(3),