Materials Literature
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The properties of four different activated carbon fiber cloth (ACF), such as specific surface area, pore volumes and pore size distribution, were evaluated. The relationship between ACF properties and its electrosorption performance was analyzed. The experimental results show that pore structure has more influence on…
The effect of different barrier properties packaging materials (PE, PET, PVC) on the shelf life of the shelled fresh bamboo shoots were studied. The effection of packaging materials were assessed by the sensory evaluation and the changes of their moisture content, ash content, total sugar content and protein content d…
Recent reports on the observation of room temperature ferromagnetism in Cu doped ZnO have been highly regarded by the scientific community. There are several contradicting reports where some authors have confirmed the occurrence of ferromagnetism in ZnO while others have ruled it out. Even in studies where room temper…
An anomalous effect was found in the strain rate dependence of severe plastic deformed commercially pure titanium with ultrafinegrained structure. A maximum tensile strength was obtained for ϵ˙=10−3s−1. This did not allow a single strain rate sensitivity parameter to be defined in the interval from ϵ˙=10−5to10−1s−1. D…
We investigated the influence of AC voltage prestressing on the electrical-tree inception voltage in LDPE. When AC voltage prestress was not imposed, the impulse-tree inception voltage increased with the size of water tree due to the electrical field relaxation. On the other hand, when AC voltage prestress was imposed…
The present experimental carried out investigations aimed at elucidating the effect of earth discontinuity on the breakdown voltage of short rod-plane air gap (40 to 140 mm) under negative lightning impulses (-1.2/50μs). We also carried out investigations on electric field measurement on the surface of a discontinuous…
Heat treatment of rheo-high pressure die cast (R-HPDC) A356 brake callipers has produced good mechanical properties on the laboratory scale. An industrial heat treatment is required to evaluate the applicability and conformance of the R-HPDC A356 brake callipers to the automotive industry. This research studied A356 b…
A novel sol–gel coating impregnated with filter dust was applied on chemically bonded sand core materials by dipping. After curing, the strengths of the core materials were measured under uniaxial loading using a new strength testing machine (STM). The STM presents the loading history as a force–displacement curve fro…
A few soda-lime glass samples with a 1 cm2 area and 0.1 cm thickness were dipped into a molten salt bath of copper sulfate and sodium sulfate in a molar ratio of 54:46 at 545°C for 10 min. These samples were irradiated with 6 MeV energy electrons in the fluence range from 10 × 1014 to 40 × 1014 electrons/cm2 and annea…
In this paper, chip recycling technology combined with SIMA method which is called CR-SIMA method was adopted to prepare semi-solid billets. AZ91D magnesium alloy was refined by Er and its microstructural evolution was investigated during semi-solid isothermal treatment. The results show that Er can improve the featur…
In these last years, different research studies constantly investigated the possibility to find a new class of materials in the field of medium/high voltage insulation. Nowadays, the conventional materials that are commonly used in this field of interest are non-recyclable. In this research activity, the electrical be…
본 연구에서는 환경오염을 발생시키는 주요한 중금속 물질의 하나인 구리를 상대적으로 쉽게 검출하기 위해, CNT 전극 및 벗김전압전류법을 이용하여 구리 금속의 감도 향상을 위한 최적조건 및 민감도를 평가하였다. 또한 구리의 벗김반응이 발생될 때의 반응 메카니즘에 대한 연구도 수행하였다. 이를 위해, 네모파 벗김전압전류법 및 선형주사 전압 전류법등의 전기화학적 분석법이 이용되었다. 평가 결과, 네모파 벗김전압전류법의 최적조건으로, 15 mV의 네모파증폭율, 60 Hz의 주파수, -1.0V vs. Ag/AgCl의 석출전위 및 200초의 석출시간이 결정되었다. 구리 금속의…
Using auminum nitrate nonahydrate and titanium dioxide nanowires as the main raw material, Al2O3/TiO2 composite powers were prepared by the hydrothermal method at 200 oC for 24 hours. And the samples are characterized by XRD, nitrogen adsorption and desorption. The results show that the samples are corundum and rutile…
The electrical conductivity in the amorphous layer formed by the implantation of protons at 1.15 MeV with fluence of 1.1×1017 ions/cm2 within the depth of potassium lithium tantalate niobate is investigated by four probes and Hall effect measurements. It is shown that the conductivity originates from electrons that ar…
Different types of formaldehyde scavenger were used to remove free formaldehyde in aldehyde tanning leather. The results showed that: the formaldehyde removal effect of self-made aminated collagen (EAC) was the best, followed by hyperbranched polymer with active methylene (HPAM). Then the mixture of EAC and HPAM was u…
Silicon nanocrystals (Si NCs) with an average diameter of 17.7 nm were synthesized using a flow-through, inductively-coupled nonthermal plasma. The crystalline Si nanoparticles (NPs) were confirmed by using transmission electron microscope (TEM) images, X-ray diffraction (XRD) analyses, and Raman spectroscopy measurem…
Mesoporous ceria and ceria-zirconia solid solutions have been synthesized following a route based on the use of silica hard template. Two different structures have been selected, one based on a three dimensional gyroidal structure, named KIT6, and other based on a two dimensional layered structure named SBA15. The pre…
This paper presents a custom DC-DC Ćuk converter developed for charging batteries from serially connected thermoelectric generators (TEGs). Present DC-DC converters are designed for a single power source resulting in low output power if the harvested heat energy source has low temperature. This drawback can be elimina…
In this paper we present a numerical analysis of two coupling mechanism between an input radiation field and a plasmonic waveguide. This analysis is realized by designing and simulating a surface plasmonic structure compound of a slab dielectric waveguide patterned on a thin film of noble metal. In order to determine…
Due to low-density, higher elevated temperature strength and good oxidation resistance; the Nb-Ti-Cr-Al alloy was estimated to become a new kind of material used at elevated temperature of next generation. Therefore, it was widely studied by western developed country, but there are still many questions unsolved in thi…