Materials Literature
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Abstract As a result of the research carried out in Lakes Duszatyńskie and the Olchowaty stream, a new European site with Geissleria declivis (Hust.) Lange-Bert. was found — a new species for Poland. The highest abundance of G. declivis has been observed on sandy substrate and small stones in the littoral zone of the…
Tungsten oxide films were prepared by an electrochemical deposition method for use as the anode in rechargeable lithium batteries. Continuous potentiostatic deposition of the film led to numerous cracks of the deposits while pulsed deposition significantly suppressed crack generation and film delamination. In particul…
Strength-strain, sorption, thermal, and fire-resistance properties of nanocomposites based on linear low-density polyethylene with montmorillonite modified with a quaternary phosphonium salt were studied. It is shown that the diffusion, sorption, and permeability of the nanocomposites depends on the type of a montmori…
The physical properties of the lead-free piezoelectric material BaTiO 3 (BT) with complex perovskite phase additives, i.e. , A(Cu 1/3 Nb 2/3 )O 3 (A = Ba, Sr, Ca), were investigated. The dense and crack-free thick films with thickness of > 5 µm were grown on platinized Si(100) wafers by using the aerosol deposition me…
A new mineral, mariinskite, BeCr2O4, the chromium analog of chrysoberyl, has been found at the Mariinsky (Malyshevo) deposit, the Ural Emerald Mines, the Central Urals, Russia. The mineral is named after its type locality. It was discovered in chromitite in association with fluorphlogopite, Cr-bearing muscovite, eskol…
Abstract The kinetics of the curing process of isocyanate-epoxy materials hardened in the presence of 1- substituted imidazole derivatives was studied by the Coast-Redfern method. The extent of a conversion parameter of the curing process in two ways was calculated: DSC (peak area integration) and rheology (viscosity…
Light-induced changes in photosensitive organic polymer films based on cellulose cinnamate have been studied. Film specimens illuminated with polarized UV light are found to become anisotropic. The dependence of the birefringence in the polymer film on the illumination time is measured, and the difference between the ref…
The compressive and flexural performance of flax fibre reinforced polymer (FFRP) confined coconut fibre reinforced concrete (CFRC) structures were investigated. The mass content of coconut fibre considered was 1% of cement. Eighteen cylinders were tested under uniaxial compression and 12 beams were tested under four-p…
A facile green strategy, low temperature in-situ chemical conversion, is reported to prepare nanocrystals with initiative “bottom-up” assembly into large-scale superlattice. The appropriate organic chalcogen precursors were chosen to control the kinetics of these reactions to keep monodisperse morphology. They also pr…
A 40% Mn-substituted BiFeO 3 (BFMO) thin film was deposited on a Pt(111)/Ti/SiO 2 /Si(100) substrate by using a pulsed laser deposition method. The coexistence of rhombohedral and orthorhombic structures in the BFMO thin film was confirmed by using X-ray diffraction and Raman spectra investigation. The leakage current…
In the paper the author presents the results of tests defining the characteristics of behaviour of Sandelin steel in the high-temperature galvanizing process. The growth kinetics of hot-dip zinc coatings on the substrate of 0.05% Si steel in the temperature range of 540-580°C has been established. The structure of the…
Abstract The magnetostructural correlations in Fe(III) complexes, originally outlined by Gorun and Lippard has been revised. Other correlation variants have been tested and the dataset enlarged for more recent entries possessing the Fe-O-Fe bridge including dinuclear, tetranuclear and hexanuclear Fe(III) complexes. Th…
Antimony-trioxide (Sb 2 O 3 ) nanowires were synthesized by using the hydrothermal method. The products were characterized by using X-ray diffraction, Fourier-transform infrared spectroscopy, scan electron microscopy, energy dispersive spectroscopy and transmission electron microscopy (TEM). The products were found to…
This paper presents a novel metamaterial structure based on hexagonal rings having polarization insensitive absorption characteristics in C and X band frequencies. The proposed structure is designed and simulated using CST Microwave Studio, which shows minimum return loss of 18.40 dB and 25.4 dB at 6.10 GHz and 10 GHz…
The absorption spectra of the precursor-derived solid solutions Zn1 − x M x O (M = Fe, Co, Cu) with a tubular morphology of aggregates have been investigated in the ultraviolet and visible regions. The maximum metal concentration x in the Zn1 − x M x O solid solutions is 0.075 for iron, 0.2 for cobalt, and 0.1 for cop…
The results of the Monte Carlo simulations of graphene with structural defects are presented. The calculations are performed within an effective quantum field theory with non-compact 3 + 1-dimensional Abelian gauge field and 2 + 1-dimensional Kogut-Susskind fermions. It was found that defects shift the semimetal-insul…
Natural resins can compete effectively with the synthetic ones in composite development. In this research, cashew nuts were picked and processed for the extraction of the resin content. The resin (natural resin) so obtained was mixed with cobalt amine (accelerator), methyl ethyl ketone peroxide (catalyst) to develop t…
Polycarbonate-based polyurethane (PC-PUs) hybrid materials were obtained by the addition oforganically modified bentonite and montmorillonite (1 w/w %). PC-PUs and their nanocomposites wereprepared using prepolymerization with two polycarbonate diols (both of Mr ca 1000) differing in chainconstitution, hexamethylene-d…
The formation of BaY0.1Zr0.9O2.95 by solid state reaction and its reactive sintering have been studied. The solid state reaction of a mixture of BaCO3, Y2O3 and ZrO2 was studied by differential scanning calorimetry/thermogravimetric analysis and Xray diffraction. The solid state formation of BaY0.1Zr0.9O2.95 is simila…
This paper describes the design procedures and the electromagnetic testing of carbon black and carbon fiber-epoxy composites for their applications as electromagnetic absorbers. The designed absorber composites are fabricated and tested in the microwave frequency range using the proposed partially filled rectangular w…