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Journal of Machine Engineering
EN This paper presents initial research on the surfaces of cutting ceramic plates ground using diamond grinding wheels. Ceramic materials were ground using a piezoelectric feed-in system whose aim was to minimize the effect of brittle cracking of the ceramic material in the machining zone. Due to preci[...]
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Journal of Telecommunications and Information Technology
2010 nr 1 10-19
EN The transition regions of GdSiO/SiOx and HfO2/ SiOx interfaces have been studied with the high-k layers deposited on silicon substrates. The existence of transition regions was verified by medium energy ion scattering (MEIS) data and transmission electron microscopy (TEM). From measurements of therm[...]
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International Journal of Occupational Safety and Ergonomics
2009 Vol. 15, No. 4 363--371
EN This is a study of the possibilities of a qualitative evaluation of protective materials with active thermography. It presents a simulation of a periodic excitation of a multilayer composite material. Tests were conducted with lock-in thermography on Kevlar® composite consisting of 16 layers of Kevl[...]
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Materials Science Poland
2013 Vol. 31, No. 2 259--263
EN In this work, first principles calculations have been performed to study the doping and distribution of Si atoms in TiC lattice. The results confirm that Si atoms prefer to occupy Ti sites and their segregation on the TiC crystal surface may occur. But in the presence of carbon vacancies on the surf[...]
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AGH Drilling, Oil, Gas
2013 Vol. 30, no. 1 145--150
EN The increasing of gasmotocompressors (GMC) reliability, operated on the booster compressor stations, underground gas storages with significant deterioration of the park units are the actual problems. The greatest attention should be paid timely detection of conrod bearings defects for the prevention[...]
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Nukleonika
EN The positron lifetime spectra in iron defected with a beam of Bi+51 and Kr+27 ions of energies 670 MeV and 240 MeV, respectively, were investigated. These spectra were analysed by an appropriate separation in 1, 2 or 3 components. It has been found that the experimental data best fit to the assumed [...]
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Nukleonika
EN The influence of sandblasting on surface and subsurface of stainless steel is investigated using variable energy positron beam (VEP), positron annihilation spectroscopy (PAS), scanning electron microscopy (SEM), and atomic force microscopy (AFM). Samples of stainless steel were blasted using 110 μm [...]
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Materials Science Poland
2014 Vol. 32, No. 1 112--120
EN The first-principles calculations have been performed to study the influence of boron on the adsorption of Ti and C on different TiC surfaces. It is found that boron can be adsorbed on both TiC (001) and (111) surfaces. When boron is present and carbon supply is high during the preparation of TiC, b[...]
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Opto - Electronics Review
EN Ion milling, as a tool for ''stirring'' defects in HgCdTe by injecting high concentration of interstitial mercury atoms, was used for studying films grown by liquid phase epitaxy (LPE) on CdZnTe substrates. The films appeared to have very low residual donor concentration (∼10¹⁴ cm⁻³), yet, similar t[...]
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Opto - Electronics Review
EN Composition effect on electro-optic (EO) properties of a LiNbO₃ (LN) single-crystal has been investigated in a Li₂O-content range of 47.0-49.95 mol%. Some non-congruent LN crystals with different Li₂O-contents were prepared by performing Li-deficient or Li-rich vapour transport equilibration treatme[...]
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Materials Science Poland
2015 Vol. 33, No. 3 482--487
EN Properties of palladium nanograins obtained by sedimentation of a soluted C-Pd film prepared by PVD method are presented. These properties were studied using SEM and TEM methods. Dissolved films were prepared by PVD method and after dissolving, they were fractionated to obtain different parts classi[...]
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Optica Applicata
EN The effect of annealing at 720-920 K under enhanced pressure (up to 1.1 GPa) in argon ambient on electrical properties of the surface layer of the Czochralski-grown silicon (Cz-Si) subjected to neutron irradiation (doses of up to 1x10>sup>17 cm-2, E = 5 MeV) or germanium doping (doping level 7x[...]
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Archives of Metallurgy and Materials
EN The effect of ultrasonic vibration on the microstructure, elimination of casting defects and distribution of alloyed elements at macro-scale during solidification of 35CrMo steel has been investigated. Results show that ultrasonic treatment has a significant effect on the grain refinement, especiall[...]
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Journal of Achievements in Materials and Manufacturing Engineering
2012 Vol. 55, nr 2 706--711
EN Purpose: The work was aimed at temperature measurement with respect to the heating process in the bundles of metal sheets in the direct cutting zone during the cutting process conducted on a guillotine. Design/methodology/approach: The paper presents a methodology to analyse the process of heating t[...]
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Engineering of Biomaterials
EN The paper presents promising results of our pilot study. The objective of this study was to investigate the effect of modified carbon fibres on cartilage regeneration. Fullthick knee articular cartilage defects in rabbits were filled with equal portions of pure carbon fibres of carbon fibres enriche[...]
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Opto - Electronics Review
EN Effect of annealing on the structural properties of arsenic-implanted mercury cadmium telluride film grown by molecular beam epitaxy was studied with the use of transmission electron microscopy and optical reflection. Strong influence of the graded-gap surface layer grown on top of the film on the b[...]
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Acta Geophysica
EN We consider the effect of the faults-defects (FD) field on the following quantum phenomena: (i) the motion of a particle expressed by the Green function; (ii) thermodynamic phenomena expressed by the partition function. We use the path integral formulation based on the extended deformation gradient [...]
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Opto - Electronics Review
EN The Hall effect and photoluminescence measurements combined with annealing and/or ion milling were used to study the electrical and optical properties of HgCdTe films grown by molecular-beam epitaxy on GaAs substrates with ZnTe and CdTe buffer layers. Unintentional donor doping, likely from the subs[...]
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Opto - Electronics Review
EN Of many techniques used to characterize quality of HgCdTe, ion milling is emerging as a unique means to reveal electrically active and neutral defects and complexes. Ion milling is capable of strongly affecting electrical properties of HgCdTe, up to conductivity type conversion in p-type material. I[...]
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Polish Journal of Chemistry
2009 Vol. 83, nr 8 1443-1454
EN Ceramic Sr(Ce0.95Y0.05)O3-delta was equilibrated at an ambient air (either wet or dry) and Ar-H2 atmospheres. After the step change of gas atmosphere, the equilibration kinetics was monitored by measuring weight change. Fick’s second law was applied to the experimental kinetic data (the in verse met[...]
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