Materials Literature
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The LTA type alummophosphate molecular sieve (AlPO(4)-42) was ionothermally synthesized by introducing organic amine into the 1-butyl-3-methylmudazolium bromide ([bmim]Br) ionic liquid The as-synthesized products were characterized and the crystallization kinetics was investigated Thermal gravimetric analysis, nuclear…
A cation–anion metal string complex with neutral axial ligands, [Ni3(dpa)4(CH3CN)2] · (ClO4)2 · (CH3CN) · H2O (1) where dpa− is 2,2′-dipyridylamine anion, was synthesized and characterized by elemental analysis, IR, fluorescence, UV, and CV spectroscopic methods, and single crystal X-ray analysis. The Ni–Ni distances…
Abstract The initial oxidation of clean, polycrystalline α‐Th from background CO/CO 2 and saturation of the Th surface by O 2 has been examined by angle‐resolved Auger electron spectroscopy (ARAES) and time of flight secondary ion mass spectrometry (ToF‐SIMS). Following dissociative adsorption of very low doses of bac…
Purpose The purpose of this paper is to investigate the use of hybrid‐excitation solutions, using contemporaneously permanent magnets and field coils, for DC machines intended to operate as the core of high‐reliability drives in critical applications supplied by batteries (e.g. fire‐extinguishing pumps, smoke blowers,…
Purpose – The purpose of this paper is to present a new finite element technique to simulate variable speed drives. Design/methodology/approach – The induction motor (IM) is simulated according to the adopted control strategy. This allows use of only magnetostatic simulation for both no-load and under-load simulations…
In this article, we deal with a control problem for a singular system regarding a phase-field model which describes a solid–liquid transition by the Ginzburg–Landau theory. The purpose is to control the system by the means of the heat supply r able to guide it into a certain state with a solid (or liquid) part in a pr…
Spreading of homogeneous mixtures of bottle-brush and linear macromolecules of poly(n-butylacrylate) on a solid substrate has been monitored on the molecular scale by atomic force microscopy. Despite the nearly identical chemical composition and similar molecular weight, brush-like macromolecules move markedly slower…
N-Methyl-N-(pentacosa-10,12-diyn)-propargylamine organizes itself into an unusual supramolecular pH- and thermo-responsive system. Studies have showed that submillimetric length hollow laths form this unique structure in the presence of hydrochloric acid. Specific chemical modifications on the initial molecule and sma…
Abstract Nanostructured metal films have been widely studied for their roles in sensing, catalysis, and energy storage. In this work, the synthesis of compositionally controlled and nanostructured Pt/Ir films by atomic layer deposition (ALD) into porous anodized aluminum oxide templates is demonstrated. Templated ALD…
Purpose The purpose of this paper is to propose the numerical pulse test for the parameter estimation of the synchronous machine models. Design/methodology/approach In order to generate data for the parameter estimation, the numerical pulse test was utilized. This test was implemented within the two‐dimensional finite…
Polyetheretherketone (PEEK) composite specimens filled in 0–30 wt% content of CaCO 3 whisker were prepared by compression moulding. Tribological testing of composites was carried out on an MM200 block-on-ring apparatus in water lubricated wear mode against carbon steel. The morphologies of wear traces were observed by…
Purpose The purpose of this paper is to investigate the application of electrochemical impedance spectroscopy (EIS) as a tool for determining the optimum protection potential (OPP) of brass in impressed current cathodic protection (ICCP) for a given environment. Design/methodology/approach The electrochemical measurem…
Correlation-induced spin-charge and spin-orbital coupling effects on spin dynamics in ferromagnetic manganites are calculated with realistic parameters in order to provide a quantitative comparison with experimental results for spin stiffness, magnon dispersion, magnon damping, anomalous zone-boundary magnon softening…
In the past decade low-temperature Glauber dynamics for the one-dimensional Ising system has been several times observed experimentally and occurred to be one of the most important theoretical approaches in a field of molecular nanomagnets. On the other hand, it has been shown recently that Glauber dynamics with the M…
The crystallization kinetics of binary V 2 O 5 /B 2 O 3 glass was studied under non-isothermal conditions using the formal theory of transformations for heterogeneous nucleation. The procedure was applied to the experimental data obtained by differential scanning calorimetry (DSC), using continuous heating techniques.…
Purpose The purpose of this paper is to research the corrosion behavior of AM60B magnesium alloy in simulated acid rain. Specifically, this paper aims to investigate the effect of pH on the corrosion behavior of the alloy. Design/methodology/approach Electrochemical methods and surface analysis were applied to study t…
Deposition and characterization of polycrystalline ZnS films prepared using a chemical bath deposition technique in an aqueous/ethanolic solution, Sur, Serap, Öztürk, Zihni, Öztaş, Mustafa, Bedir, Metin
Purpose The purpose of this paper is to prepare polypyrrolone nanofibres and investigate the effects of concentration of polypyrrolone precursor and voltage on polypyrrolone precursor nanofibres by electrospinning, in order to achieve ideal nanofibres. Design/methodology/approach Polypyrrolone nanofibres were prepared…
Purpose The paper aims to investigate the drying effect exhibited by pigments combined with a Co(II) salt of 2‐ethylhexanoic acid (Co(II)) in an alkyd resin modified by soya bean oil. Design/methodology/approach Paint hardening was studied by means of a method that follows the progress of alkyd film drying. Another im…
Liquid crystal defects are used as probes to study the local reorientation dynamics of the nematic surface director on SiO(x) alignment layers. The tracking of the defect's motion reveals the presence of solid friction forces, unexpected in this complex viscous fluid. We identify the director pinning due to a surface…