Systems A-Sb-Sn (A= Ag, Au, Bi, Co, Cu, In, Ni), and more complex ones, like Ag-Cu-Ni-Au-Sn, have been elaborated to change the lead-containing solders. Ternary systems with the binary Sb-Sn will be discussed more thoroughly. A contradiction was found in these systems (e.g. Ag-Sb [....] » Read More
The potential of acarbose as corrosion inhibitor of aluminium in 0.5 M HCl was studied in various concentrations and temperatures (25–550C) by utilizing weight loss estimations, Potentiodynamic polarization techniques, Electrochemical impedance spectroscopy (EIS), Monte Car [....] » Read More
Regenerative medicine stands before the problem to replace non-functional tissues or improve the wound healing. Therefore, many laboratories try to develop resorbable tissue scaffolds that could support the patient´s cells or breathable wound dressings that could immobilize [....] » Read More
We report the synthesis and basic characterization details of Bi1−xPbxFe1-xTixO3 (x = 0.05 and 0.1) samples. The polycrystalline bulk sample of Bi1−xPbxFe1-xTixO3 (x = 0.05 and 0.1) have been synthesized by conventional solid-state reaction method. The effects of part [....] » Read More
Based on the development of high-performance necessity and urgency of the thermoelectric conversion material, copper sulfide has been regarded as a promising thermoelectric material with relatively high thermoelectric performance and abundant resources. The low intrinsic thermal [....] » Read More
Al-Si-Cu-Mg Cast (354) alloys are extensively used in automotive engine components owing to their outstanding performance after applying the proper heat treatment. Transition elements (Zr, Ni, and Mn) were added in order to avoid the deterioration in mechanical properties of thes [....] » Read More
Materials play vital roles in human existence, and wood is one of such materials on accounts of its application in areas such as housing, furniture, construction, paper making etc. The trees from which wood is obtained also perform unique duty to sustain lives of other living thi [....] » Read More
Hybrid nanomaterials (HNMs), composed of carbonized conducting polymer (CCP), e.g. polypyrrole (PPy), nanoparticles (NPs) with simultaneously grown carbon nanotubes’ (CNTs) and metal oxide nanowires’ (MONWs) coverage on their surface were prepared for electrochemical [....] » Read More
Commonly used catalysts for removing impurities from waste gases can be prepared using techniques of applying active material to carriers with a developed surface and porosity. There are many uncomplicated methods known to achieve materials that are satisfactory in terms of [....] » Read More
This work investigated the influence of metal phase content on the microstructure and selected properties of composites from Al2O3-Cu-Ni system. The following powders were used as the initial materials: nanometric Al2O3 and micrometric metal powders: Cu and Ni. Microscopic observ [....] » Read More
In the present research, the Al2O3-Cu-Mo hybrid composites were prepared by centrifugal slip casting technique. This technique is a method for powder processing that combines the effects of slip casting and centrifugation. The aim of the work is to determine the possibility of fo [....] » Read More
The former Hg-mining area of Abbadia San Salvatore (Siena, Tuscany, central Italy), was one the most important districts of Hg production worldwide, whose activity was closed at the end of the seventies. The exploited ore had a mercury content of 0.6 to 2.0 wt.% and was [....] » Read More
In fossil coals many fields there is a set of valuable elements, which allows cost-effective to extract them when the content is even lower than in industrial ores. In this regard, very relevant is the problem of scientific justification of process of associated recovery of preci [....] » Read More
In this report, results about the incorporation of silver nanoparticles in coatings are shown. The results were obtained using clinoptilolite-stilbite, clinoptilolite, and chabazite natural zeolites. The ion exchange properties of the zeolite promoted the obtaining and stabilizat [....] » Read More
Developing oleogelators and oil thickeners from natural polymers with adequate properties is a challenge today. This work explores the ability of the different micro- nano-architectures based on low-sulfonate lignin (LSL)/polyvinylpyrrolidone (PVP) to structure castor oil. LSL an [....] » Read More
Title : Integration of molecular machines and motors into supramolecular materials: Structural properties studied by small-angle neutron and X-ray scattering
Eric Buhler, The University of Paris, France
Switchable functional molecules capable of producing mechanical work constitute an active focus in nanotechnologies as they can be a source of components for molecular-based devices and materials. In particular, the dynamic nature of mechanically interlocked molecules allows thei [....] » Read More
Title : Thin films of oxides by Atomic Layer Deposition – new applications
Marek Godlewski, Institute of Physics Polish Academy of Sciences, Poland
Technology of Atomic Layer Deposition (ALD) allows to grow thin films (from a few nm to few hundred nm) of wide band gap oxides (ZnO, Al2O3, ZrO2, HfO2, TiO2) with excellent structural, mechanical, optical and electrical properties. At present such films found range of applicatio [....] » Read More
Title : Size-dependent properties in BaTiO3- based ceramics
Lavinia Petronela Curecheriu, Alexandru Ioan Cuza University from Iasi, Romania
Due to the continuous trend of miniaturization in microelectronics industry, the interest concerning scale dependent phenomena in ferroelectric materials attracted a broad interest in the last years. Apart the need to understand how to preserve the functional properties comparati [....] » Read More
Title : Hybrid enthalpy method for Finite Element Thermal Analysis of multi-materials involving multi-orientations of the thermal conductivity tensor.
Fouad Erchiqui, University of Quebec in Abitibi, Canada
The anisotropic problem of thermal conduction in a incompressible solid is generally treated in a reference coordinate system, which adequately describes its thermal conductivity tensor (Cartesian, cylindrical or spherical). For this problem, numerical treatment is delicate, es [....] » Read More
Title : Detection of defects in CFRP composites by optical thermography methods
Waldemar Swiderski, Military Institute of Armament Technology, Poland
CFRP (Carbon Fiber Reinforced Plastic) composites are increasingly used in a variety of applications. Non-destructive testing methods are used for evaluating their condition both as a finished product and during their use. Damage that may occur in these types of composites includ [....] » Read More
Title : The use of thin AlAs capping layers in the InAs/GaAs quantum dot system for intermediate band solar cells
Nazaret Ruiz Marin, University of Cadiz, Spain
Recently, the covering of InAs quantum dots (QDs) with AlAs capping layers (CLs) has attracted special attention as it has been shown to be an excellent way to enhance the photovoltaic efficiency in QD solar cells (QDSCs), with the removal of the wetting layer (WL) being the puta [....] » Read More
Title : Comparative of different capping approaches in the preservation of InAs/GaAs quantum dots in terms of content, size and density
Sara Flores Gallegos, University of Cadiz, Spain
Self-assembled InAs/GaAs quantum dots (QDs) fabricated by the Stranski-Krastanov epitaxial growth mode have attracted great interest due to their enormous potential in a wide range of optoelectronic applications such as lasers or solar cells. The emission properties of these QDs [....] » Read More
Title : Remediation activities in the former mercury mine of Abbadia San Salvatore (Tuscany, central Italy)
Orlando Vaselli, ELTE University, Italy
The former mercury mining district at the foothill of the 200-300,000 years old volcanic complex of Mt. Amiata (Tuscany, central Italy) were one of the most important mines worldwide and the mining site of Abbadia San Salvatore (ASS) was the core of the exploitation of cinnabar a [....] » Read More
Title : Extrusion, Microstructure and Mechanical Characterization of a New Magnesium based Multicomponent Alloy
Anchal Nahata, Bits Pilani Dubai Campus, United Arab Emirates
A new magnesium multicomponent alloy Mg70Al18Zn6Ca4Y2 (atomic pct.) synthesized using the technique of Disintegrated Melt Deposition was hot extruded. The extruded samples were characterized in terms of density, hardness, and microstructure. Investigations were carried out to acc [....] » Read More
Title : Investigated the behaviour of Engineering nanoparticle materials during the anaerobic digestion
Maryam Alejji, Center for Advanced Material (CAM) Qatar University, Qatar
The growth of using engineered nanoparticle materials (ENMs) has been rapid, and their applications are extensive, particularly in personal care and cosmetics. However, concerns had raised about the impact of these particles on human health and the environment 1. They may reach t [....] » Read More
Title : Coins from Al-Zubarah, Qatar: A historical-scientific study
Noora Al Qahtani, Qatar University and Imperial College London, United Kingdom
A surface archaeological coins “Zu/111 found at the old town of Al-Zubarah, Qatar” has been analysed complementarily using historic and scientific characterization techniques. For example, a scanning electron microscope coupled with energy dispersive x-ray (EDS) unit, [....] » Read More
Title : Evaluation of ecofriendly compounds performance as corrosion inhibitors for mild steel in molar hydrochloric acid: Electrochemical study and theoretical approach
Mohamed Oubaaqa, Ibn Tofail University, Morocco
Mild steel has been extensively used in several industrial processes due to its distinctive characteristics. However, it can unavoidably be corroded due to the harsh environment around it. Recently, the use of organic corrosion inhibitors is the most effective and economical appr [....] » Read More
Title : On the enhanced in interfacial strength through carbon/glass hybrid composite: mode I fatigue delamination
Francisco Maciel Monticeli, Sao Paulo State University, Brazil
The laminated hybrid composites (e.g., carbon/glass fibre) application creates diversity in material design – higher stacking sequence possibilities. The main question raised by the scientific community is: how carbon/glass hybrid laminate affects interfacial adhesion, cons [....] » Read More