Geochemical and physiological indices gained at the background area under anthropogenic impact were compared. The study sites comprise 30 sample areas each. Overall, 600 samples of pine needles designated for delayed chlorophyll fluorescence measurement as well 60 soil needle correspondingly selected to perform geochemical analysis. biological uptake urban ecosystems is represented in range: Mn...

PURPOSE The purpose of this study was to assess the surface characteristics and the biocompatibility of zirconium (Zr) coating on Ti-6Al-4V alloy surface by radio frequency (RF) magnetron sputtering method. MATERIALS AND METHODS The zirconium films were developed on Ti-6Al-4V discs using RF magnetron sputtering method. Surface profile, surface composition, surface roughness and surface energy...

The microstructure of an annealed alloy with a Zr₈Ni21 composition was studied by both scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The presence of three phases, Zr₈Ni21, Zr₂Ni₇, and Zr₇Ni10, was confirmed by SEM/X-ray energy dispersive spectroscopy compositional mapping and TEM electron diffraction. Distribution of the phases and their morphology can be linked...

(Ti,Zr)C powder was sintered with WC-Co following an industrial process, including an isotherm at 1410 °C. A series of interrupted sintering trials was performed with the aim of studying the sintering behavior and the microstructural evolution during both solid-state and liquid-state sintering. Reference samples, using the same elemental compositions but with the starting components TiC and ZrC...

Recently due to the environmental and ecosystemic changes caused by air pollution, impurities of foods and water, and exposure to enormous electromagnetic waves we have greater concern regarding the release of inorganic trace elements from different materials that can have drastic effects on life of biological cells, tissues, and organs. Inorganic trace elements are essential substances, and in...

This article focuses on the galvanic replacement synthesis of Ti-Ni and Zr-Ni metal systems with a “core-shell” structure, which are potential precursors for intermetallics. The authors defined effective parameters formation features polymetallic characterized by granulometric, phase, elemental composition. X-ray fluorescence phase analysis methods showed that deposition nickel dispersed titani...

For the deposition of hard layers on hard metals from the gas phase in the systems Ti-C-B, Ti-N-B, Ti-V-C-0, Ti-Zr-C, Ti-C-N, Ti-C, B-C and Si-C at selected deposition conditions the existence of oscillations was established, which result in a lamellar structure of the layers. As shown by Auger-Spectroscopic analyses the composition of the lamellas changes alternately. Reasons for the lamellar ...