Materials Literature
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Equal channel angular pressing (ECAP) is one of severe plastic deformation (SPD) techniques that gives a high level of strain and eventually results in ultrafine-grained structure. This research aims to study the effects of passes on equal channel angular pressing of 6061 aluminium alloy. The samples were subjected to…
Continuous fibre (carbon or glass) composite laminates with an epoxy matrix modified by nanoparticles (nanosilica of 25 nm or nanocarbon of 35 nm) were fabricated using a vacuum assisted resin infusion technique, aided by hot pressing, that produces high performance composites of a fibre fraction over 60 vol%. The pre…
Calcium phosphate bone cement (CPC), a bioceramic, is commonly used in artificial bone scaffold for impaired bones. In this study, CPC is mixed with polylactide (PLA) fibers and porogenic agent to form CPC/PLA composite bone scaffold. The compressive strength of the resulting bone scaffolds is evaluated and the fractu…
NOx is one of the most serious atmosphere pollutants, and how to control and remove NOx is the hot research in the environmental field all over the world. SCR is considered as one of the most effective denitration methods at present. In SCR technology, catalyst is the core of the SCR system, and the performance of SCR…
비교적 낮은 온도와 상압에서 전구체 Titanium(IV) sulfate와 염기성 용액을 반응시키는 수열합성법을 이용하여 소성과정을 거치지 않고 $TiO_2$ 나노입자를 제조하였다. 염기성 용액의 종류(NaOH, $NH_4OH$ , Monoethanolamine, Diethanolamine, Triethanolamine), 첨가되는 계면활성제의 종류(CTAB, Span 20, SDBS)와 농도, 제조 온도, pH 등을 변화시켜 $TiO_2$ 를 제조하였고, 생성되는 입자의 결정성, 입자크기 등과 같은 물리적 특성은 XRD, SEM, Zeta-potential 등을…
Metal–dielectric core–shell nanoparticles serve as robust platforms for control of light-matter interactions via chemically accessible tunability of the dielectric shell thickness. Now X. Meng, K. Fujita, et al. have applied such platforms to the area of random lasers, and on page 573 they demonstrate control of lasin…
The phase field method was applied to study the effect of second-phase particles (SPP) with different geometric orientations and shapes on grain growth. The results show that, in the grain growth process, most of the spherical second-phase particles located at triple junctions, while the stick SPPs located at the grai…
The dynamic puncture resistance of multi-layer integrated composite which was comprised of glass fabric reinforcement or Kevlar fabric reinforcement and nonwovens were discussed as related to recycled Kevlar fibers amount, number of layer and K-ply position for purpose of cost reduction and performance improvement. Th…
Low-dimensional thermoelectric materials are believed to have higher energy transformation efficiency compared to bulk materials. In this work, the thermal conductivities in normal direction of bismuth telluride thin films have been studied using Non-equilibrium Molecular Dynamics (NEMD) with a two-body potential. We…
Magnetic studies were performed on PrPd2Si2 single crystals which crystallize in the tetragonal ThCr2Si2-type structure. The temperature dependence of the magnetic susceptibility indicates that the compound orders antiferromagnetically at temperatures below T N = 3.2 K. The transition was confirmed by specific heat me…
Technical development and rapid telecommunication create convenient consumer products, but produce electromagnetic radiation that hurts the human body, which makes the development of antistatic and electromagnetic-wave-resistant textiles important. This study combines polylactic acid (PLA) fibers and low melting point…
nevitable part of bearing steel processing is soft annealing. Hot formed semi-products usually have unfavorable structure for machining. The lamellar pearlite in semi-products is transformed to globular pearlite by soft annealing. This long-lasting process is usually in practice carried out by annealing in furnace for…
One significant feature of landfill leachate is the high concentration of ammonia nitrogen (NH3-N), which led to the difficulty of subsequent biological treatment. In this experiment, chemical crystallization was applied and bittern was used as a source of magnesium. The single factor experiment was taken by changing…
In this paper we propose a distributed algorithm to solve a discrete trajectory optimization problem that occurs in a micro-electro-mechanical based modular surface context. The method computes the shortest path between two points of the modular surface using a strategy based on minimum hop count. Our scalable approac…
The Au-Ge eutectic solder has good thermal properties and a melting temperature of 356°C, which is widely used in high power microwave modules. However, there were a few papers investigated the reliability of Au-Ge solder. This paper focused on the failure of Au-Ge eutectic solder in microwave circuit. The interfacial…
In this work, calcium carbonate derived from eggshell, in a form of eggshell powder (ESP) with an average particle size of 13.96 μm, was used as bio-reinforcing filler for poly (butylene succinate), (PBS). The effect of ESP content on mechanical, thermal, and morphological properties of ESP filled PBS was investigated…
The pore fractal dimensions of PVA/PAA-AM blend superabsorbent fiber were calculated by box-counting method. The results indicate that the pore structures of superabsorbent fiber have obvious fractal characteristics. In addition, we have also studied the relations of AM ratio with other parameters. Calculation shows t…
The kinetics of photocurrent is studied in the presence of the intrinsic irradiation at h ν ≥ 1.12 eV in the Mn 4 Si 7 -Si〈Mn〉-Mn 4 Si 7 and Mn 4 Si 7 -Si〈Mn〉-M heterojunctions at relatively high applied voltages. It is demonstrated that photocurrent, scattered power, and temperature at the reverse-biased contact of t…
The microstructure of fractures in AlSiC metal matrix composite material obtained via vacuum compression impregnation of porous semi-finished materials is studied using a Quanta 200i 3D FEI scanning electron microscope. The disruption of AlSiC samples is shown to be due to the brittle fracturing of the largest grains…
Hydrophobic-hydrophilic (HP) model serves as a surrogate for the protein structure prediction problem to fold a chain of amino acids into a 2D square lattice. By the fact that the number of amino acids is equal to the number of lattice points or not, there are two types of folding conformations, i.e., the compact and…