Materials Literature
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In this paper , Copper(I) Iodide (CuI)thin films were prepared by Pulsed Laser Deposition (PLD).The effect of different No. oflaser pulse (200,500 and 800) on the structural and electrical properties were studied.The structure of all CuIfilms istested using X-ray diffraction (XRD) the results were found to be polycrys…
The aim of this study is to evaluate the possibility of decreasing the mix asphalt compaction temperature through zeolites use, based on pavement analysis of the trial section (of road). The article contains results of laboratory tests and analysis of samples from trial section (of road)for AC 16 W 35/50 with addition…
In this work, polymer blends based on poly(vinyl alcohol) (PVA) and different ratios (5 and 10 wt%) of methylcellulose (MC) were prepared into films by solution casting using water as a common solvent, and gamma irradiated at different doses. The blends before and after gamma irradiation were loaded with Doxycycline h…
This paper reports an efficient and accurate simulation method for vibrations and deformations of single- and multi-layer graphene membranes. In this method, a graphene membrane is modelled by a 2-D plate element whose thickness is changeable in COMSOL Multiphysics. The graphene is regarded as a linear isotropic elast…
OBJECTIVE: To prepare of a novel functional self-assembling peptide nanofiber hydrogel scaffold RADKPS designed with linking the short functional motif of bone morphogenetic protein 7 (BMP-7) and to evaluate its biocompatibiity so as to provide the experimental basis for in viva studies on regeneration of degenerated…
The article presents the results of research on low cycle fatigue strength of high-strength structural steel S960QL. During the tests, controlled force was applied using the different total strain amplitude εac and strain ratio Rε = 0.1. The obtained results allowed to determine the value of the cyclic strain hardenin…
One of the key factors that affect the sexual reproduction of diatoms is the cell concentration in the mating experiments. The concentration of pheromones, which probably initiate gametogenesis in the mixture of cells of opposite sexes, depends on the culture density. The influence of the cell concentration and inocul…
For a stable electric power supply in the space, nuclear batteries have been used as the main power source in a spacecraft owing to their long lifetime and high reliability. In accordance with the plan for lunar mission in Korea, nuclear batteries will supply electricity to the rover that needs to be developed. Accord…
In this paper, the interface adhesion and reliability between copper lead frame(C-19210) and resin prepreg material of different copper lead frame lamination pretreatment processes (CZ and brown oxide) was studied. Surface morphology, roughness, peel strength and moisture sensitivity level, MSL3, reliability tests wer…
A three-dimensional defocused Luneburg lens antenna is efficiently designed in this paper, using planar metamaterials for broadband operation. The new lens antenna consists of sections, acquired from the ideally discretized Luneburg sphere, each having a different refractive index and realized via suitable metamateria…
It is shown that a time-reversal invariant topological superconductivity can be realized in a quasi-onedimensional structure, which is fabricated by filling the superconducting materials into the periodic channel of dielectric matrices like zeolite and asbestos under high pressure. The topological superconducting phas…
The process of changes in structure and crystallographic texture of cladding tubes from austenitic steel ChS68 under thermal creep testing were studied. Testing of tubes was conducted at the temperature 700 o C in the air by their stretching in axial direction under the stress 160 MPa until rupture. By data of phase a…
Hard coatings such as nickel, chromium and tungsten can improve the surface properties of the substrate. The coating surfaces have been developed for increase of the wear resistance, hardness or corrosion resistance for industrial applications. Electroplating methods generally used to obtain producing these hard coati…
The results of using of ion-beam technologies methods for finish treatment of metal products are presented. The experiments were performed at the installation ILUR-03, which allows the operation of cleaning, polishing and surface layers doping of the material of unlimited length cylindrical samples by radial Ar + ions…
Uranium-molybdenum alloys are perspective nuclear fuel for fast reactors. In this work, a study was conducted of the interaction of uranium-molybdenum alloy with iron and chromium steel at an elevated temperature of 750 °C for 5 hours. It was found that the constant rate of the interaction layer growth for diffusion c…
Plasma electrolytic oxidation (PEO) coating is gaining attention as a promising surface treatment technique for lightweight metals and alloys such as Al, Mg and Ti. The coating involves complex interactions among various process parameters including substrate composition, current modes and electrolyte composition. In…
The study of electric machines subject to rotor eccentricity is usually performed using a winding and permeance function approach. In a companion paper, an alternative method is investigated based on conformal mapping. The geometry of a an eccentric round-rotor machine has been mapped into a uniform air-gap topology b…
By the analysis of thermal creep data in conjunction with structural-phase state the most likely mechanisms of UN creep are considered. An equation relating the thermal and radiation creep of nitride fuel with such important parameters as plutonium content, porosity, grain size, the content of impurities of transition…
Influence of electrodeposition conditions and heat treatment on the structure and properties of metallic coatings has been considered. It has been that at different values of overvoltage, metals crystallize with a cellular, subgrain or monoblock structure. The final formation of the structure occurs during annealing,…
This paper presents results of fracture tests on Multilayer Ceramic Capacitors (MLCCs). Fracture mechanical calculations were carried out with ANSYS in order to analyse the experimental values of fracture strength for the tested MLCCs. Subsequent metallographic analyses were used to get a precise picture of the origin…