Materials Literature
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Converging spherical and cylindrical elastic—plastic waves in an isotropic work-hardening medium is investigated on the basis of a finite difference method. The small amplitude pressure is applied instantaneously and maintained on the outer surface of a spherical or a cylindrical medium. It is found that for undercrit…
Interaction kinetics of the aluminum nitride-based sintered composite material with the potassium cryolite melt with the cryolite ratio KO = 1.3 at 700–800°C is investigated by the continuous weighing method. It is established that the composite is almost unaffected by the melt at t = 700°C. The corrosion rate increas…
Superduplex stainless steel is an important class of stainless steels because it combines the benefits of ferrite and austenite phases, resulting in steels with better mechanical properties and corrosion resistance. However, a significant problem of this steel is the precipitation of deleterious phases during heat tre…
Carbon nanotubes are very typical nanomaterials, because the electron π of carbon nanotubes is restricted by the quantum size, the energy bands of the electron π are discontiguous and the characteristic of its energy level is divisive. The electron π can absorb the photon and makes transition from low energy level to…
This paper describes the procedures to characterize defects in the insulation of an 11 kV Voltage Transformer (VT) by evaluation of the 3D phase-resolved partial discharge patterns. The 3D Phase-Resolved Technique provide a method to identify defects where partial discharges occur by means of the unique character of t…
Las recientes investigaciones en el campo de biopolímeros han intentado brindar soluciones tecnológicas a los retos en el campo de la ciencia y la tecnología de los materiales. En los últimos años, se han llevado a cabo investigaciones con el objetivo de modificar las propiedades de películas empleando tratamientos en…
Abstract: A form of static coupon following the boat was developed to carry the natural aging test for CF3011/BA9916-II composite in marine environment, and the weather resistance of composite in marine climate was studied. The changes of the morphology of the composite were observed, the changes of the quality ,tensi…
Oxidative ageing is one of the important factors limiting the lifetime of elastomer products. The chemical reactions taking place during ageing are very complex as a result of interactions between numerous components of the compound and the reactive intermediates. The chemiluminescence method delivers a good insight i…
Les fontes à graphite lamellaire ont des caractéristiques mécaniques de résistance, de plasticité et de ténacité inférieures aux fontes classiques. Mais leurs propriétés d’utilisation leur procurent de nombreux avantages comme une bonne tenue au frottement, une capacité d’amortissement des vibrations très élevée, une…
A new method of detecting insulation faults in cores of AC machines is outlined. The method involves the measurements of the magnetic field near the surface of the core, using a number of parallel electronic field meters. It is demonstrated that the new method does not share the disadvantages of other methods as it do…
The results of numerical simulation of the deflection strain of a graphene nanoparticle 36.9 Å long and 41.18 Å wide are presented. The nanoparticle is deflected by nanoindentation. A platinum pyramid with the face-centered cubic lattice is considered as an atomic-force microscope tip. It is found that the graphene na…
Plasma-facing components (PFCs) in fusion devices inherently suffer from irradiation by hydrogen isotope plasmas. Graphite is used as the first wall of the Korea Superconducting Tokamak Advanced Research (KSTAR) because of its low atomic number and excellent thermal and mechanical properties. In this experiment, the e…
The improvement of mathematical models for semisolid alloy flow properties requires profound understanding of the underlying physical nature. To date, it is commonly accepted that the shear thinning behaviour of these suspensions is caused by the solid phase microstructure, while the liquid phase is assumed to be Newt…
Platelet-rich plasma (PRP) has been applied in a series of clinical treatments. PRP contains high-concentrated platelets, which, when activated, could secret a variety of growth factors and cytokines, to promote and/or enhance healing of injured tissues. Non-activated platelets suspension could be prepared by an isola…
The development of high voltage DC power cable is far lagging behind that of AC power cable partly due to the breakdown properties of DC cable insulation under the influence of multiple factors such as space charge and temperature. This paper presents an experimental research on electrical breakdown properties of LDPE…
The evolution of through-thickness strain gradients during snake rolling (SR), which introduces an horizontal offset between upper and lower rolls, of Al-Mg-Si-Cu sheets was investigated with the inscribed lines in side including rolling and normal direction of sheets. The complete pole figures were used to investigat…
Boronization with carborane (C2B10H12) was archieved in a vacuum vessel coupled to a filament discharge system. Optical emission spectroscopy was employed to characterize the boronization process. The Balmer lines of hydrogen and deuterium were measured, and the boronization process was analyzed by using the intensity…
Acoustic emission signals were continuously monitored during corrosion fatigue crack propagation for X52 steel in 3.5% NaCl and AZ31 magnesium alloy in 0.1%NaCl solution. There are different microstructure and corrosion fatigue crack propagation mechanism for X52 steel and AZ31B magnesium alloy. Combined with the exis…
Summary In this study, poly(ethylene‐co‐vinyl acetate) (EVA) with different organophilic bentonites were prepared by melt‐blended and evaluated using differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and the tensile properties. The results showed that the modification of bentonite with the two…
Selenium is a rare element in nature. It is used in the food, pharmaceutical, and glass industries. In commercial glasses, selenium is the element responsible for most of the pink or light red color, but its effect is primarily dependent on the oxidation state of the element in the glassy matrix. Besides, selenium is…