Materials Literature
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The microstructure of metallic foams can be analyzed three-dimensionally via the synchrotron-based X-ray microtomography. The 3D morphology of the cell wall of an Al-Zn-Mg foam has been revealed. The solid matrix is virtually removed in the right half of the figure, visualizing the spatial distribution of micro-pores…
Nanostructure ITO thin films have been deposited on well cleaned glass and silicon substrates using dc magnetron sputtering technique. The ITO films are post annealed in air using a normal heater setup in the temperature range 100 - 400 °C. The ITO film annealed at 300°C exhibited optimum transparency and resistivity…
The preparation and properties of multiple shell hollow SiO 2 @CeO 2 hybrid microspheres through a novel and facile method of layer‐by‐layer sol–gel carbon templating is presented. The whole process involves three key strategies: the loading of silica precursor into the carbon templates, the coating of cerium precurso…
Conducting tensile experiment with high pressure gas cylinder materials to analyze its acoustic emission (AE) signals, can realize the stretch features and AE signals regularity, which is very important to distinguish high pressure gas cylinder detection. The AE signals are divided into four different stages through t…
The magnesium alloy smelting process is analyzed and designed from the protection of the melting, refining treatment, modification and many other aspects. The article puts forward the solvent and gas dual protection smelting measures that prevent the progress of chemical reaction of magnesium melt. The article also pu…
In the present work, Ni/MgO powder was prepared by co-precipitation in which CO restore NiO to elemental subtance Ni due to C2O42- was decompose to CO and CO2 at 700°C. As the process of the second sintering, H3BO3 was added into the sintered powder of 700°C and was grinded. Then the powder of H3BO3 added was sintered…
Ti3SiC2-Al2O3joint with strong interface has potential high temperature applications because it combines with the merits of hard ceramics and soft ceramics. The safety is strongly dependent on the interfacial bonding strength between Ti3SiC2and Al2O3. In this work, the cross-section method was suggested to evaluate th…
The exudates of three fungal species (Aspergillus niger, Fusarium sambucinum and Penicillium canescens) have been tested for their effect on the algal population and diversity of El-Ibrahemia Canal. It has been found that the exudates of F. sambucinum was stimulatory for the algal population, whereas that of A. niger…
Compressive tests of Zr6Ni3AlX（X=1 to 3），Zr7Ni3AlX（X=1 to 3），Zr8Ni3AlX（X=1 to 3），Zr9Ni3AlX（X=1 to 3），Zr3Ni4AlX（X=1 to 3）and Zr10Ni3AlX（X=1 to 3）bluk metallic glass（BMG） were carried out to investigate the compositional dependence of mechanical properties． The strength increased but the ductility decreased with an incr…
The Phase Field model of solidification processes was carried out coupled with temperature field model. The influence of interface atomic time on dendrite growth morphology in undercooled melt was simulated with pure nickel. The experimental results show that when the interface atomic motion time parameter is minor, t…
Technology development and new grades of alloys creation put before construction materials the number of requirements in range of durability and reliability of created constructions. Receivers expect materials with high strength properties, low production cost of the finished product, availability, corrosion resistanc…
Interesting problems in computational chemistry from a computer science perspective.
MWCNTs/Ti(C, N) cermets-based composites were prepared by vacuum hot-pressing sintering method. The mechanical properties of samples were examined. XRD and SEM were used to investigate the crystal structure of the composites and microstructure of fractures surface, respectively. The toughening mechanism of composites…
Abstract Production of castings, like any other field of technology is aimed at providing high-quality product, free from defects. One of the main causes of defects in castings is the phenomenon of shrinkage of the casting. This phenomenon causes the formation of shrinkage cavities and porosity in the casting. The maj…
A brief review of studies performed by the authors to determine the conditions under which antiferromagnetic media display dynamic properties similar to those of certain types of electromagnetic and acoustic metamaterials is presented.
Nearly equiatomic NiTi alloy is hydrothermally treated in a urea solution at 150°C to form nanostructures at the surface, with the aim to improve the structural quality of sol-gel deposited TiO2 film. Nanosheets film of ammonium titanate is formed on NiTi alloy after 8 h hydrothermal treatment, and the sol-gel TiO2 fi…
Due to the excellent casting performance, good corrosion resistance, high strength and casting manufacturing costs, A356 casting aluminum alloy is widely used in automobile wheel industry of China. However, for the restrictions of the production equipment, technology and the production craft level, there are problems…
With introducing briefly the refractory powder materials, the article analyzed the morphology and particle size distribution of commercial different size fraction corundum powder by scanning electron microscopy and laser particle size analyzer. The results showed that most of corundum powder particles were angular sph…
Two approaches of improving the toughness of polypropylene (PP)-based composites reinforced by natural cellulose fibers were developed. The surface modification of cellulose fibrils (CMF) or fiber by either in-situ grafting polymerization of butyl acrylate (BA) on CMF surface via an atom transfer radical polymerizatio…
Four electrolyte (aluminate, silicate, borate and phosphate) solutions were optimized for using in surface treatment of 7075 aluminum alloy by plasma electrolytic oxidation. Microstructure, phase composition and corrosion resistance of ceramic coatings on the surface were analyzed by SEM, X-ray diffraction as well as…