Materials Literature
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Effect of electrochemically injected magnesium ions on the process in which carbonate deposits are formed on a corrodible surface of low-carbon steel in water of heat-and-water supply systems was studied. It was found that the anticorrosion efficiency of the deposit, evaluated by the polarization-resistance method and…
The structure of a multilayer metal material produced from a composite blank based on sheets of the 08Kh18 and 08Kh18N10 steels by hot pack rolling has been studied using optical microscopy, as well as scanning and transmission electron microscopy. It has been found that two processing cycles are completed in the form…
Abstract Three types of diarylethenes having one phenol moiety as an aromatic unit were synthesized in order to control pH change upon irradiation with UV and visible light. Upon irradiation with 313 nm light, these open-ring isomers were transformed to thermally unstable colored isomers in methanol solution. During t…
Down-conversion is a feasible way to improve conversion efficiency of silicon solar cell. However, the width of excitation band for down-converter based on trivalent lanthanide ions is still not satisfying. Here, we designed and fabricated a heterostructural down-converter composed of Y₂O₃: [(Tb³⁺-Yb³⁺), Li⁺] quantum…
The highly dense n-type zinc oxide (ZnO) nanowires (NWs)/p-type ZnO:Sb nanoparticles (NPs) growth on glass substrate. An energy dispersive X-ray mapping demonstrates that Sb element is present in the nanostructures (NSs) and the doping Sb concentration is 1.52 atomic%. The XRD spectrum reveals ZnO wurtzite and Sb2O3cu…
Polymeric nanocomposites have been shown to possess superior electrical insulation properties compared to traditional filled-resins. However, poor dispersion uniformity and insufficient filler-matrix interaction can adversely affect insulation properties of nanocomposites. In this study, the use of plasma polymerizati…
Monolithic catalysts consisting of a layer of SCR catalyst deposited on top of a LNT catalyst were optimized to provide high NOx conversion at both low and high temperatures with minimal precious group metal (PGM) loading for effective diesel NOx emission control. In this study we demonstrate the application of LNT &…
Titanium-platinum (Ti 50 Pt 50 ) (all compositions in at%) alloy exhibits thermoelastic martensitic phase transformation above 1000°C and has potential for high-temperature shape memory material applications. However, as has been previously reported, Ti 50 Pt 50 alloy exhibited a negligible recovery ratio (0–11%) and…
Combining new measurements of thermal diffusivity (D) and viscosity (η) of 13 silica-rich glasses and their melts with previous data reveals specific effects of Al, Ca, and Fe cations on heat and mass transport for diverse glasses and melts. We investigated rhyolites, tektites, leucogranite, haplogranite, and chemical…
In situ deuterium depth profile measurements by nuclear reaction analysis (NRA) were performed on undamaged and neutron-like damaged W during D atom exposure at several sample temperatures. Damaged W was produced by high energy W-ion irradiation. In situ results of D retention after exposure termination are in good ag…
In this paper, an oil sorbent based on superhydrophobic kapok fiber fabricated by the sol-gel method was used for the selective sorption of oil from the surface of artificial seawater. The effects of process parameters such as seawater pH, seawater temperature, and contact time on the extent of oil sorption were inves…
Long-term erosion of plasma-facing materials with different surface roughness in ASDEX Upgrade, Hakola, A, Karhunen, J, Koivuranta, S, Likonen, J, Balden, M, Herrmann, A, Mayer, M, Müller, H W, Neu, R, Rohde, V, Sugiyama, K, The ASDEX Upgrade Team
In recent years, atomistic simulations have provided valuable insights into the thermodynamic and kinetic properties of grain and interphase boundaries. In this work, we provide a brief overview of kinetic processes occurring at migrating interfaces and survey various molecular dynamics techniques for extracting grain…
Both magnesium and zinc are considered as suitable elements for preparation of biodegradable materials that can be gradually dissolved in human organism without the production of toxic compounds. Although many magnesium-based materials possess good mechanical properties and biocompatibility, corrosion rates accompanie…
Objective(s): Nanotechnology and nanoparticles are increasingly recognized for their potential applications in aerospace engineering, nanoelectronics, and environmental remediation, medicine and consumer products. More importantly is the potential for the application of silver nanoparticles (Ag NPs) in the treatment o…
In high-temperature gas reactors, graphite particle adhesion and resuspension from structural surfaces play a role in source term estimations. This paper describes measurements of the adhesion force between an irregular graphite cluster (henceforth called a graphite particle) and Hastelloy X samples having different s…
Abstract The formation conditions of the ferric smectite nontronite are not fully understood. The present study couples experimental and analytical data with field observations in an attempt to constrain the rate and temperature of formation of naturally occurring nontronites from Columbia River Basalt flows. Syntheti…
Objective(s): Metal nanoparticles (NPs) offer a wide variety of potential applications in pharmaceutical sciences due to the unique advances in nanotechnology research. In this work, bimetal Ag-Au alloy NPs were prepared and their combinations with other antibiotics were tested against Staphylococcus aureus . Material…
A series of novel metal-oxide (TiO2, TiO2-SiO2)-supported Mn, Fe, Co, V, Cu and Ce catalysts were prepared by incipient wetness technique and investigated for the low-temperature selective catalytic reduction (SCR) of NOx with ammonia at industrial relevantly conditions. Among all the prepared catalysts, Cu/TiO2 showe…
This paper deals with modeling and analysis of the integration of ThermoElectric generators (TEG) into a conventional vehicle, specifically aimed at recovering waste heat from exhaust gases. The model is based on existing and commercial thermoelectric materials, specifically Bi2Te3, having ZTs not exceeding 1 and effi…