The preparation of a stable manganese ammonium sulphate bath (MASB) with Te(VI) additive was investigated. It found that the best is orthotelluric acid H6TeO6. influence (0·55–2·20 mM) on cathode polarisation in MASB Current efficiency coatings electrodeposited from 2·20 mM ranged 34·1 to 37·7% and concentration incorporated tellurium 0·88 2·22%. determined reached maximum values tensile stress during initial period electrolysis. Tellurium incorporates Mn changes their structure morphology....

The most effective means to protect against bacterial invasion and reduce the risk of healthcare-associated infections are antibacterial components synthesis. In this study, a novel process for synthesis organic-inorganic hybrid coatings containing silver nanoparticles is presented. Silver polymer formation proceeds simultaneously through in situ photoreduction salt UV-crosslinking bifunctional aliphatic silicone acrylate. nanocomposite films with 0.5-1.43 wt % concentration were obtained...

The influence of thiourea (TU, 0·5 g L−1) and additive mixture ammonium selenate (AS–TU, on electrodeposition Zn–Mn alloy coatings from sulphate–citrate bath (SCB) has been studied. Investigations composition were carried out by atomic absorption spectroscopy inductively coupled plasma. A profile the relative concentration sulphur was obtained using glow discharge spectroscopy. morphology studied scanning electron microscopy. crystal structure investigated X-ray diffraction. Two phases...

Evaluation of the new lead-free optically transparent nanocomposites is provided in this paper along with introduction to their fabrication technologies and results investigation X-ray attenuating optical properties before after exposure high doses. These materials might be considered for construction protective screens that are used protect medical personnel against scattered X rays during close-to patient operations. Rough selection possible composites was performed according attenuation...

AbstractThe influence of adding aluminium sulphate to a sulphate–citrate bath on electrodeposition Zn–Mn alloy coatings was investigated. Silvery matt (velours) good quality (up 10–12 μm thickness) were obtained. The effect small amounts (5–20 g L–1) additive cathode polarisation, composition, morphology, structure and current efficiency also studied. It is concluded that semibright bright, silvery economically viable only at low densities (e.g. 5 A dm–2), when deposition suitably...

High-quality recycling of photovoltaic (PV) modules starts with a delamination process. It aims to remove the encapsulation layer between glass and solar cells. Many studies have investigated ethylene-vinyl acetate encapsulant, whereas polyolefin elastomer (POE) in remains research gap. This study presents methods solvent thermal treatment for separation layers PV module encapsulated POE polymer. Various organic compounds were tested treatment. The results showed that most solvents did not...

The influence of Na2TeO3 additive in sulphate–citrate bath on electrodeposition Zn–Mn alloy coatings was investigated by material characterisation methods and electrochemical techniques. effects small amounts (0·39–3·10 mM) cathode polarisation, composition current efficiency were estimated. crystal structure surface morphology studied scanning electron microscopy (SEM) powder X-ray diffraction spectroscopy (XRD) respectively. SEM XRD data showed that effectively accelerates phase...

Surface topography, hardness and microstructure of nickel coatings electrodeposited on Si master with a periodical structure have been studied depending vacuum deposited sublayer material (Ni, Cu or Ag). It is shown that the quality replication silicon in shim simultaneously different sublayers dependent used. All types analyzed enabled transfer lateral dimensions showed good tested structures (2 μm period), while replicated using Ni exhibited worst roughness. The layers was found to be used...

The influence of electrolyte temperature and cathode current density on the microhardness tensile stress electrodeposited Mn coatings have been investigated. It has determined that mostly hard were from acid manganese with Te(VI) additive at 20 °C using a low (2 A×dm–2). same high hardness higher (15 A×dm–2) (70 °C). Supposedly, is related to structure composition very closely. assumed Te incorporates in during initial stage electrolysis changes their morphology. This leads maximum values...

Preparation of stable manganese electrolyte with Te(VI) additive was investigated. The best found to be orthotelluric acid H6TeO6 which does not muddle the at pH < 3.7. Orthotelluric obtained from sodium tellurate Na2TeO4·2H2O solution during its acidification concentrated sulphuric acid. influence on cathode polarization in At low (0.55–2.20 mmol/l) concentrations additive, electrodeposition manganese, electrochemical and chemical reduction Te(IV) elemental Te take place surface steel...

Treatment of waste fluorescent lamps, which are widely used all over the world, is a very important field environmental research.Due to presence mercury vapour in these this kind requires special attention its disposal.This study aims evaluate impact lamps and describe principal aspects new technology for their treatment Lithuania.The main parameters process manganese concentrations residual lamps.Mercury concentration fractionated residuals was determined by complexonometric titration...