Underpotential deposition, i.e. the cathodic deposition above reversible potential E(Men+/Me), produces an atomic layer of a metal on semiconductor electrode, such as e.g. bismuth telluride. This phenomenon allows electrodeposition superlattices formed building blocks layered structure joined by biatomic interlayer. work outlines optimized pulse controlled (Bi2)m(Bi2Te3)n films produced under m...

A possible mechanism of the formation of spongy zinc electrodeposits is considered. The confirmation of the proposed semiquantitative mathematical model is performed in zinc electrodeposition onto copper wire from a 0.1 M zincate solution in 1.0 M KOH at room temperature. It was shown by SEM analysis of the deposit that the spongy growth was caused by mass transfer limitations under low nucleat...

The lattice parameter of Bi/BiSb superlattice nanowire (SLNW) has been measured using in situ high-temperature X-ray diffraction method. The single crystalline Bi/BiSb SLNW arrays with different bilayer thicknesses have been fabricated within the porous anodic alumina membranes (AAMs) by a charge-controlled pulse electrodeposition. Different temperature dependences of the lattice parameter and ...

Abstract The electrodeposition process of Zn-Cr alloy coatings under the conditions direct and pulsed current is discussed. Cr content in obtained coatings, efficiency process, surface morphology, structure wettability as a function deposition parameters, such density, were determined. good quality contained up to 20 wt.% (for current) 9 pulse current). All had typical zinc (h.c.p.) hydrophobic...

This study examined the characteristics of calcium phosphate coatings formed on untreated and H2O2-treated titanium substrates by electrodeposition in a modified simulated body fluid (SBF). A porous coating comprising of mainly hydroxyapatite (HA) was formed on the H2O2-treated titanium substrate by electrodeposition. This coating was transformed into carbonate and calcium-deficient HA layers w...

Electrodeposition of platinum and silver into hydrophobic and hydrophilic microporous silicon layers was investigated using chemically-modified microporous silicon electrodes. Hydrophobic microporous silicon enhanced the electrodeposition of platinum in the porous layer. Meanwhile hydrophilic one showed that platinum was hardly deposited within the porous layer and a filmy growth of platinum on...

A nickel-nanodiamond composite coating was prepared on the surface of annealed 45 carbon steel by double-pulse electrodeposition. The effect nanodiamond particle content morphology, grain size and wear corrosion resistance were investigated. According to analysis test results X-ray diffractometry scanning electron microscopy, it found that cathodic polarization electrodeposition process enhance...

Magnesium has been recently recognized as a biodegradation metal for bone substitute application. In the present work, porous magnesium-zinc scaffolds were prepared by powder metallurgical process and nano hydroxyapatite (HAP) coating on the Mg-3Zn (wt.%) scaffold was prepared by pulse electrodeposition and alkali treatment processes to improve the corrosion resistance of scaffold. The results ...