Materials Literature
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Abstract This study presents a method of obtaining porous materials based on the rigid polyurethane foam (RPURF) as the matrix and containing thermoplastic polystyrene beads (EPS) as the fillers. In RPURF-EPS composites, the compact EPS were expanded after heating above a glass transition temperature of the EPS and ga…
Material properties, corrosion, and metal release from stainless steel powders are important factors to assess any occupational health hazards. This paper elucidates the corrosion behavior of stainless steel particles (inert-gas-atomized AISI 316L powders sized < 45μm, polished and non-polished) compared with correspo…
The corrosion inhibition characteristics of three Schiff bases used as inhibitors have been studied by quantum chemistry method at the level of DFT/B3LYP with the 6-31 + G (d, p) base sets. Quantum chemical parameters such as highest occupied molecular orbital energy (EHOMO), lowest unoccupied molecular orbital energy…
The effect of extract of cannabis plant on the corrosion of nickel in aqueous 0.5M sulphuric acid was investigated by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization techniques. EIS measurements showed that the dissolution process of nickel occurs under activation control. Potentiodynamic…
Article MECHANICAL PULPING: Low consistency refining of mechanical pulp: Relationships between refiner operating conditions and pulp properties was published on December 1, 2012 in the journal Nordic Pulp & Paper Research Journal (volume 27, issue 5).
Ca 2 BO 3 Cl:Ce 3+ , Ca 2 BO 3 Cl:Tb 3+ , and Ca 2 BO 3 Cl:Ce 3+ , Tb 3+ phosphors are synthesized by a high temperature solid-state reaction. The emission intensity of Ce 3+ or Tb 3+ in Ca 2 BO 3 Cl is influenced by the Ce 3+ or Tb 3+ doping content, and the optimum concentrations of Ce 3+ and Tb 3+ are 0.03 mol and…
We theoretically investigate a switchable spin Hall effect of light (SHEL) in reflection for three specific dispersion relations at an air-anisotropic metamaterial interface. The displacements of horizontal and vertical polarization components vary with the incident angle at different dispersion relations. The transve…
Theoretical calculations of the magnitude and temperature variation of the measured thermal conductivity of undoped and doped GaAs nanobeams will present. The calculations have been performed by employing modified Callaway’s theoretical model. In the model, both longitudinal and transverse modes are explicitly taken i…
The taxonomical composition of epilithic diatoms was investigated at intertidal zone of Homa lagoon, Aegean sea, Turkey. The stations are located in different littoral zones of the study area and they are different from each other in terms of hydrological respect. The samples contained a mixture of forms growing on th…
We report a high-performance graphene/Si field-effect transistor fabricated via rapid chemical vapor deposition. Oligolayered graphene with a large uniform surface acts as the local gate of the graphene transistors. The scaled transconductance, gm, of the graphene transistors exceeds 3 mS/μm, and the ratio of the curr…
Hyperspectral cathodoluminescence mapping is used to examine a carbonado diamond. The hyperspectral dataset is examined using a data clustering algorithm to interpret the range of spectral shapes present within the dataset, which are related to defects within the structure of the diamond. The cathodoluminescence respo…
Abstract Summary: Segmented polyurethanes have been synthesized employing polyols derived from renewable resources, semicrystalline or amorphous in nature, as soft segment, and an aliphatic (1,6‐hexamethylene diisocyanate, HDI) or aromatic (4,4′‐diphenylmethane diisocyanate, MDI) diisocyanate and 1,4‐butanediol (BD) a…
In this paper, graphene was obtained by Oxidation-reduction method. The obtained graphene was characterized by XRD and FTIR. On this basis, graphene/polyamide 6(PA6) composites were prepared by melt compounding. The well-dispersed graphene nanosheets in PA6 matrix was investigated by SEM. The properties were character…
This paper presents an experimental comparative study of iron losses obtained by means of the Epstein frame, Ring Core and dynamometer tests with non-oriented electrical steel samples. The comparisons are qualitative and they are intended to show the importance of carrying out other tests to evaluate electrical steels…
The appearance of Fibonacci sequences and the golden ratio in plant structures is one of the great outstanding puzzles of biology. Here I suggest that quasicrystals, which naturally pack in the golden ratio, may be ubiquitous in biological systems and introduce the golden ratio into plant phyllotaxy. The appearance of…
Fire protective intumescent coating cannot insulate a base material effectively if its char lacks mechanical strength. This research therefore, studied the effects of fibre reinforcement to epoxy-based intumescent coatings char strength. The fibres used include glass wool fibre, Rockwool fibre and ceramic wool fibre o…
nanostructured hydrotalcite-like compounds that contain nickel, cobalt and aluminum have been synthesized by conventional coprecipitation method without using any surfactants or templating agents. The structure and morphology of the coprecipitated nanohydrotalcites and its derived mixed oxides were characterized by po…
Inhibition performance of Gliclazide as corrosion inhibitor for mild steel (MS) in 1 M HCl solution was studied by weight loss measurements and electrochemical tests. It showed 91% inhibition efficiency at 400 ppm concentration. Polarization study indicates that Gliclazide behaves as mixed type inhibitor. The adsorpti…
The invalidities, including (i) the property of continuity and (ii) the irreversibility of thermodynamics, are investigated when characterizing flexoelectricity with classical continuum approach and Clausius-Duhem inequality. To avoid the invalidities, Micropolar field theory is introduced. The differences between cla…
Boriding is a thermo-chemical surface hardening treatment applied to iron based materials. This treatment is performed by boron element diffusing into iron based materials at high temperatures. Wear resistance increases by forming ferro-boron phases on the material surface. In addition, a very hard layer forms on the…