Materials Literature
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Based on the results of the sub- and full-scale trials, the toroidal field (TF) coil and TF coil structure manufacturing procedures were considered. The radial plate (RP) will be manufactured by assembling ten sets of segments using laser-beam welding. The cover plates (CPs) will be manufactured using three different…
To evaluate the effects of cold working ratio, stress intensity factor and water chemistry on an IGSCC susceptibility of non-sensitized austenitic stainless steel, constant displacement DCB specimens were applied to SCC tests in simulated BWR and PWR primary water for the three types of austenitic stainless steels, Ty…
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A novel solution-based ultrasonic mist deposition method has been developed for the formation of organic solar cells. This technique enabled low-resistive gallium-doped zinc oxide (ZnO : Ga) and indium-tin-oxide (ITO) thin films capable of applying as anode layers in the device. Low resistive and flat PEDOS : PSS hole…
For recent years, a new technologies of treatment of spinal disease and injuries received underwent rapid development. Many of them use different types of artificial implants and fixation systems. At the same time the most widely a transpedicular and ventral systems are used. If the spinal surgical operation is perfor…
Ecotoxicity of PSL nanoparticles with various functional groups to Escherichia coli KP7600 strain was investigated using Colony Count method. As a result, it was found that the only positively-charged PSL nanoparticles lead to expression of the death of bacterial cells. The confocal observation of the bacterial cells…
It is needed to know magnetic properties under various stress and magnetic flux conditions in order to utilize electrical steel sheets effectively. In this paper, we examine a measurement method of the vector magnetic properties of a non-oriented electrical steel sheet under stress conditions. At first, an evaluation…
Optical absorption spectra and photoluminescence spectra were obtained for eight kinds of polyolefin sheet samples using photons in a range from visible to vacuum ultraviolet. Almost all samples were found to exhibit an absorption peak at around 6.5 eV and a luminescence band at around 4.3 eV. The luminescence was fou…
The effect of improving machinability of Ca-deoxidized steels in carbide tool machining operation is widely known. It has been proposed that oxide inclusions in steels,which works as “belag” on the tool surface during machining operation,has been responsible for this effect. In this paper,we have investigated the infl…
304L stainless steel was cathodically polarised in a 1 M sodium chloride solution using a microcapillary electrochemical droplet cell. During the cathodic polarisation the produced hydrogen atoms penetrate into the sample and accumulate at sites of the steel surface. We observed that the pitting potential (E-pit), the…
The coefficients of thermal expansion (CTE) of low-viscosity phosphate sealing glasses are too high to match low-CTE materials such as silicon. In this study, a low-viscosity SnO–MgO–P2O5 (SMP) glass powder was mixed with 15 vol % of a negative thermal expansion cobalt-magnesium pyrophosphate (Co0.5Mg0.5)2P2O7 (CMP) c…
It was clarified that the promotion of the crystallization of Chromium carbide during welding solidification by increasing C content was effective to decrease the solidification cracking susceptibility of fully austenitic weld metal with a large amount of Phosphorus. The decrease of solidification cracking susceptibil…
This paper describes the design and fabrication of a microlens for the sensitivity improvement of uncooled infrared array sensors. We improved the sensitivity by collecting infrared rays to detectors. The microlens is made of silicon, which is a typical substrate for MEMS technology. We fabricated it by photolithograp…
Untreated effluents contain toxic materials like hexavalent chromium and sulphides which accumulate in soils and cause many health hazards. Hexavalent chromium is toxic and carcinogenic and is being extensively used in the tanning industry of Pakistan. The tannery wastewater samples were collected from two tanneries i…
High quality, large area and well-oriented ZnO nanorod arrays electrodes were successfully synthesized on conductive transparent oxide substrates by low-temperature hydrothermal methods for dye-sensitized solar cells. Aiming at getting further enhancement and study the effect of the surface modification on cell perfor…
The microstructural evolution and piezoelectric properties of Na0.5K0.5NbO3 ceramics by adding K3Nb3O6Si2O7 (NKN+x mol% KNS; x=0.0, 0.3, 0.7, 1.4) were investigated. The advantageous effect of the additive KNS for NKN ceramics was good sinterability for well controlled particle size distribution during sinter process.…
We develop a method for measuring piezooptic coefficients kk (k = 4, 5, 6) for the crystals that belong to almost all of the point symmetry groups. The method is based on the studies of optical birefringence and optical indicatrix rotation angle under conditions of known spatial distribution of mechanical stress compo…
3D集積パッケージは半導体とパッケージ用サブストレートのギャップを埋める技術のキイトピックスのひとつである。3つの主要なアプローチがあり，半導体産業，パッケージング産業およびプリント配線板産業で，材料メーカ，設備メーカ，大学および研究機関を含めた研究開発活動が行われてきた。最も微細な配線とビアピッチを提供できるのはシリコン貫通穴（TSV: Through Silicon Via）を用いたシリコンインターポーザである。しかし，製造コストはウェハサイズとビア形成プロセスおよび金属被覆プロセスにより限界があり，非常に高額のままである。ガラスインターポーザは2番目の解決策であり，25 μm径の貫通ガラスビア（TGV: Through Gl…
Magnesium (Mg) is easy to be corroded in contact with other metals due to the formation of galvanic cell at the interface because it has the lowest negative standard electrode potential (SEP) in industrial metals. The traditional methods to evaluate corrosion resistance such as saltwater immersion test, salt spray tes…