INTRODUCTION: Magnesium alloys are attractive as a class of biodegradable metallic materials. However, too fast degradation is an obstacle to their clinical applications. Recently, micro-arc oxidation (MAO) coatings were applied on biodegradable magnesium alloys to delay their degradation. In vivo studies showed that the protective ability of the MAO coating should be further improved [1]. Seal...

Possible relations between the native oxide film formed spontaneously on the AZ31 and AZ61 magnesium alloy substrates with different surface finish, the chemistry of the outer surface of the conversion coatings that grows after their subsequent immersion on saturated aqueous NaHCO₃ solution treatment and the enhancement of corrosion resistance have been studied. The significant increase in the ...

The encapsulation of objects with protective layers is employed in anticorrosive coatings of the metals [1], conformal coatings in microelectronics [2], micro encapsulation of chemicals for drug delivery [3] and etc. In many research and histological practices the microscopy access to the coated sample is desirable. We report here on facile methodology for immobilization and encapsulation of ob...

© 2014 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim 1 wileyonlinelibrary.com coatings on windows, lenses or solar cells, repellent or protective clothing, non-fouling marine vessels or biomedical devices, and anti-icing or drag-reducing surfaces. An ideal coating should ensure stable repellency, should be transparent in order not to affect color or transparency of the un...

High-density metals such as hafnium and zirconium are of interest to the propellant, explosive, and pyrotechnic industry due to their high oxidation enthalpies; however, these metal fuels suffer from electrostatic discharge (ESD) complications creating safety concerns. Previous attempts to passivate these powders have failed due to abrasion of the protective coatings. Two novel methods for dese...

In this study, a microelectromechanical system (MEMS) two-dimensional (2D) wind direction and wind speed sensor consisting of a square heating source and four thermopiles was manufactured using the heat detection method. The heating source and thermopiles of the manufactured sensor must be exposed to air to detect wind speed and wind direction. Therefore, there are concerns that the sensor coul...

The processes of creating a superconducting niobium coating on cryogyroscope rotor were considered. conditions for the electrodeposition coatings from molten salt rotors cryogenic gyroscope determined. Niobium obtained electrochemically polished and subsequently protective pentoxide was electroformed. occurring during electrodeposition, electropolishing electrooxidation equipment technology dev...