Materials Literature
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Spent aluminum-clad fuel elements from Argentine experimental nuclear reactors, manufactured with AA6061 aluminum alloy, are submitted to interim storage in demineralized water basins. In order to characterize the oxides grown during the storage, immersion tests of AA6061 samples were performed for periods from 3 days…
The electronic structure and hydrogen storage capability of Yttrium-doped BNNTs has been theoretically investigated using first principles density functional theory (DFT). Yttrium atom prefers the hollow site in the center of the hexagonal ring with a binding energy of 0.8048eV. Decorating by Y makes the system half-m…
Composites of linear-low density polyethylene (LLDPE) with multi-walled carbon nanotubes (MWCNT) and thermally reduced graphene (TRGO) were produced by melt compounding. The composites were compatibilized by grafting aromatic pyridine groups onto the LLDPE backbone. The aromatic moieties established non-covalent π-π i…
Mechanical recycling of polymeric materials is a favorable technique resulting in economic and environmental benefits, especially in the case of polymers with a high production volume as the polypropylene copolymer (PP). However, recycling by reprocessing techniques can lead to thermal, mechanical or thermo-oxidative…
The generation of neutrons through nuclear reactions like Be(d,n), necessary to implement Accelerator-Based Boron Neutron Capture Therapy (AB-BNCT), requires stable Be deposits on an adequate substrate. In this paper, first results of beryllium deposits on Mo, W and Cu substrates are shown. In order to achieve the adh…
Proton exchange membrane fuel cells (PEMFCs) run on pure hydrogen and oxygen (or air), producing electricity, water, and some heat. This makes PEMFC an attractive option for clean power generation. PEMFCs also operate at low temperature which makes them quick to start up and easy to handle. PEMFCs have several importa…
The antimicrobial activity of silver nanoparticles makes this chemical element attractive for their incorporation in different materials. Additionally, heteropolyacids (HPAs) have advantages as catalysts which make them environmentally very interesting. The objective of this work is to incorporate in a silica matrix o…
A solution growth approach for zinc oxide (ZnO) nanowires is highly appealing because of the low growth temperature and possibility for large area synthesis. In our work, ZnO nanowires were obtained from thin films prepared on silica glass, Si (100) and Si (111) from a single and five layers spin-coating deposition of…
The aim of this work was to study the effect of prolonged potentiodynamic cycling (PPC) on the conducting properties of poly(oaminophenol) (POAP) film electrodes. PPC reduces strongly the electron and ion transport rates at POAP films. This effect is called here deactivation. Cyclic Voltammetry (CV), Rotating Disc Ele…
The deformation behavior of an A6061 aluminum alloy in different heat treatment conditions of natural aging is simulated in a state parameter-based microstructure evolution approach. It is shown that at least two state parameters are required for modelling experimental flow curves at lower temperature accurately. In t…
Producers of turbomachines for the aviation and energy sectors have to meet the future challenges regarding environment protection, resource conservation and profitability. As part of the 2014 market and trend analysis on the subject of Life Cycle Engineering for turbomachinery, the market potential of the concept of…
The properties of coatings obtained from Ni-Zn electrodeposition baths containing microparticles is analyzed. The incorporation of alumina or silicon carbide microparticles improves properties of hardness and protection of the coating. The Ni content in the alloy, which normally varies between 10 and 15%, was measured…
The precipitation and growth of sigma phase in duplex stainless steel was investigated to clarify the quantitative effects of temperature and chemistry on growth rate in isothermal heating process. Intermetallic phase such as sigma phase is harmful for mechanical properties of duplex stainless steels. The increasing o…
Mercury is one of the most hazardous contaminants emitted to the atmosphere due to its toxic effects on the environment and human health. Anthropogenic and geological sources account for 30 % and 10 % respectively, whereas the rest is from re-emissions. Consumption of fossil fuels for power generation and heating purp…
UNLABELLED: In vivo experiments were carried out to study functioning of vascular grafts manufactured by means of electrospinning from solutions of polycaprolactone (PCL) and hexafluoroisopropanol (HFIP), PCL with 10% gelatine and a low-permeability inner layer (LPIL) 10 μm thick and PCL with 10% gelatine and LPIL (10…
This study investigated the role of bis(p-sulfonatophenyl)phenylphosphine (BSPP) in stabilizing gold nanoparticles in 0.5TBE aqueous solution. Gold nanoparticles were made by the method of reduction of tetrachloroauric acid by sodium citrate, and then they were coated with BSPP. After centrifugation steps, the AuNPs/B…
Two kinds of anodic films (i.e., CAA films and BSAA films) on surfaces of 2060 Al-Li alloy were successfully prepared by anodizing. The presenting work mainly focused on the contrastive investigation about the effect of the two kinds of anodic films on corrosion resistance and fatigue crack initiator. The morphologies…
This study used a galvanic displacement reaction for aluminum-gold oxidation–reduction and added surfactants to act as capping agents to control the morphology and size of gold growth.
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Для создания современных изделий авиационной и ракетно-космической техники необходимо разрабатывать новые алюминиевые сплавы, обладающие повышенными характеристиками. С целью повышения механических свойств деформируемых алюминиевых сплавов системы Al–Mg перспективной является добавка скандия, однако малые добавки элем…