Materials Literature
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Space-borne optical systems must be tolerant to radiation to guarantee that the required system performance is maintained during prolonged mission times. We show that the radiation hardness can be improved by selecting the relevant glass from a group of optical analogs. This conclusion is based on the study of gamma-r…
ABSTRACT Incorporating air bubbles into foods is a technical challenge, and in all cases, the fabrication of a foam goes through a “wet foam” stage, where bubbles are diluted in the food matrix and require stabilization. Sometimes, the end product is itself a wet foam, and a popular example is ice cream. This article…
The structure of gillardite, the Ni-analogue [ideally Cu3NiCl2(OH)6] of herbertsmithite [ideally Cu3ZnCl2(OH)6] has been determined at 273(2) K. The crystal used was removed from a sample from the 132N nickel deposit at Widgiemooltha, Western Australia, Australia. Seventeen electron-microprobe analyses gave compositio…
The aim of this study is to determine the interfacial adhesion of Arenga Pinnata fiber and epoxy matrix after undergoing a tensile test. The specimens of Arenga Pinnata fiber reinforced epoxy composites were prepared at various fiber weights of 10%, 15% and 20% with different fiber orientations such as woven roving, l…
Monometallic (Au and Ni) and bimetallic (Au + Ni) nanoparticles deposited on SiO2 from colloidal solutions in triethylamine have been studied by x-ray photoelectron spectroscopy (XPS). The solutions were prepared through vapor-phase metal synthesis. We have determined the basic parameters of the core-level and valence…
Coating surfaces with a protective layer is a common method to protect artwork from deterioration. These layers consist often of organic substances such as acrylic resins. Due to weathering and ageing polymers usually suffer changes in optical properties and these organic coats also reduce the water-permeability of po…
A novel supramolecular self-assembly, where a pyridyl-substituted perylene bisimide dye (DPyPBI) axially binds to zinc phthalocyanine (ZnPc), has been designed. Their coordination properties have been studied by UV/vis, fluorescence techniques and 1H NMR spectroscopy, showing that 1:1 and 1:2 double sandwich complexes…
In this paper support vector machine (SVM) has been used for optimization of electric field along the support insulators used in high voltage (HV) systems. To illustrate the effectiveness of SVM in optimizing electric field problems, two axi-symmetric cases have been considered one having an insulator with a contour t…
Uni- and multicellular microorganisms are capable of performing a variety of functions. Many of these self-replicating biological entities can synthesize and structure materials, sense, convert energy, communicate, and generate mechanical motion. From an engineering vantage point, these microorganisms may be considere…
The present paper reports on a new approach for the DBD-based plasma-enhanced chemical vapor deposition of MAA coatings at atmospheric pressure, using a plasma-copolymerization with VTMS in order to render the deposits water-stable. The aim of this work is the optimization of the conditions for generating a highly sta…
In this paper, polyamide 6/montmorillonite nanocomposites (PA6CNs) were prepared via conventional and an ultrasonic extrusion technology developed in our laboratory. The structure and morphology of montmorillonite dispersed in conventional and ultrasonicated PA6CNs were studied by x‐ray diffraction (XRD), transmission…
This paper describes the surface modification of high temperature vulcanized silicone rubber (HTV-SR) resulting from corona discharges under atmospheric pressure. In this study, a plate-shaped HTV-SR specimen was exposed to corona stress generated by a needles-plane electrode system; further, physicochemical analyses…
The effect of quenching temperature from 900 to 1050°C on the microstructures, mechanical properties and abrasion resistance of modified high born cast steel containing 0·3 wt-%C and 3·0 wt-%B was studied by optical microscopy, scanning electron microscopy, X-ray diffraction analysis, tensile tester, impact tester, ha…
NiO/SDC composites and Ni/SDC cermets for solid oxide fuel cell (SOFC) anode applications were prepared from nickel oxide (NiO) and samaria doped ceria (SDC) powders by the powder metallurgy process. The physical and mechanical properties, as well as the microstructure of the NiO/SDC composites and the Ni/SDC cermets…
Physical vapor deposition (PVD) was used to prepare pure magnesium coatings on silicon substrates at various argon pressures and deposition angles. The film morphology was observed to depend on the deposition conditions. The approximately 3 µm thick Mg films exhibited columnar growth with voided boundaries and a fiber…
The spectral analysis of the correlated current and potential noise data record (1024 points) obtainedfrom the stressed 316 stainless steel (SS) electrode undergoing stable pitting corrosion by usingMaximum Entropy Method (MEM) are discussed in this paper. The power spectral density (PSD) datafor current as well as po…
Properties of magnesium hydride and multicomponent materials on its basis are considered in terms their use for reversible hydrogen storage. Special attention is given to methods of magnesium hydride production, including application of various catalysts and nonequilibrium high-energy processing. Principal advances in…
Abstract Phenolic resin based activated carbon fibres (ACF) impregnated with oxides of various transition metals were investigated for the catalytic oxidation of SO 2 into H 2 SO 4 . Oxidation was carried out in the packed bed tubular reactor in the presence of O 2 and H 2 O. The activity of the various metals impregn…
In this study, plain woven fabrics in two blends were chosen to investigate the effects of water repellent finishes on woven fabric properties. The fabrics were treated with different types of water repellents at different concentrations. The levels of water repellency of the fabrics were measured in accordance with t…
Efficient fire extinction with water could be greatly improved by using superabsorbent polymers, added to the water used for fire fighting, or sprayed over surfaces of combustible materials in order to protect them from fire. Specially developed superabsorbent polymers such as acrylamide/2‐acrylamide‐2‐methyl‐propane‐…