Materials Literature
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This thesis reports the synthesis and characterisation of several layered pnictides, chalcogenides, and oxychalcogenides, with an emphasis on materials that exhibit high temperature superconductivity. High and low temperature techniques have been used to synthesise new materials and modify their properties. The majori…
Titanium alloys as biomaterial have over fifty years after practical use for dental and orthopedic surgery. This short paper shows its practical and historical developing road map and view in future.
Small Punch (SP) creep test has been recognized as a practical procedure to examine creep rupture lives only sampling a very small volume. However the standard testing method for the SP creep has not been established yet. In this study, SP creep tests in air and in vacuum were carried out at 600℃, employing 2.25Cr-1Mo…
Residual stresses of a thermal barrier coating (TBC) system are important parameters because it will cause the damages of the system. The residual stresses of the TBC system was evaluated by the curvature method. The curvatures of the substrate with blast treatment, the specimen with blast and bond coat (BC), and the…
Electron back scatter diffraction pattern (EBSP) analysis was expected as new method of evaluating plastic strain. In the present study, EBSP analysis was conducted to measure the kernel average misorientation (KAM) value. KAM value is applied to measure the plastic strain imposed to polycrystalline Ferritic steel aft…
The fatigue behavior of 2A12 Aluminum alloy was experimentally studied through different annular notched specimens under symmetrical triangle with the frequency of 0.5 Hz. The experimental result showed that the microstructure played an important role during the entire fatigue life of 2A12 Aluminum alloy. The short fa…
A large-scale CCS demonstration project is currently being undertaken by the Japanese government in the Tomakomai area, Hokkaido prefecture, Japan. The project is scheduled to run for the period JFY 2012-2020 to demonstrate the viability of CCS system from CO_2 capture through to injection and storage. 100,000 tonnes…
For the purpose of the early realization of fusion energy, construction of JT-60 Super Advanced (JT-60SA), a superconducting tokamak facility, is steadily proceeding in JAEA Naka Fusion Institute located in Naka city, Ibaraki prefecture, Japan, toward the first plasma in March 2019. This project is conducted under the…
Ice adhesion often causes the accident accompanied by an economic loss. So, it is important to know real ice adhesion force. Ice adhesion force is often measured by the method that a shearing force is given at the interface between the ice and solid surface. However, the measured value is an apparent ice adhesion forc…
It is one of the efficient approach to reduce the memory consumption in Monte Carlo based reactor physical simulations by using the On-the-fly Doppler broadening for temperature dependent nuclear cross sections. RXSP is a nuclear cross sections processing code being developed by REAL team in Department of Engineering…
We examined ejecta size distribution when aluminum alloy 2017-T4 spheres with a diameter of 1.6, 3.2 and 7.0 mm impacted aluminum alloy 6061-T6 targets with a plane surface at several impact velocities. We used a two-stage light-gas gun at the Institute of Space and Astronautical Science (ISAS)/Japan Aerospace Explora…
The decomposition of aqueous chlorohydrocarbons regarded as environmental pollutants has been widely studied. However, it is usually difficult to separate liquid and/or volatile products originated from chlorohydrocarbons from reactant solution. We succeeded to precipitate hydrophobic carbon nanoparticles and their ag…
Titanium and titanium alloys have good combination of high mechanical properties and excellent corrosion resistance in human body. So titanium and titanium alloys have excellent properties for for medical implants and medical devices. The medical committee of The Japan Titanium Society is supporting the activity that…
Liquid drops hit against solid surface, which has an enormous influence on the mechanical properties of base solid surface during its service. Impact of the droplet makes the solid surface and some internal section of the base solid material generate high stress. The conical microstructure may decrease the dimensionle…
Nowadays, rapid prototyping (RP) technology has gained great interest in manufacturing applications due to its advantages such as simplicity, low cost production, short manufacturing cycle time and increasing competitiveness. However, the physical properties of material is main problem for RP and become an obstacle to…
For controlling ignition of HCCI engine fueled by biomass gas, the effect of ozone addition was investigated. In previous experiment, it was shown that ignition timing is advanced by ozone addition. In this paper, the chemical reactions and the mechanism of ignition advance by ozone addition were investigated by calcu…
Surface of a fatigued copper was analyzed by the EBSD technique, to consider a possibility that self-organized dislocation structure is visualized through Kikuchi pattern analysis. In this study, the single-slip oriented copper single crystal was cyclically deformed under a constant plastic shear strain amplitude of 1…
The NRC created a state-of-the-art reactor consequence analysis (SOARCA) project to develop the best estimates of the offsite consequences for potential severe reactor accidents for two pilot plants: the Peach Bottom Atomic Power Station and the Surry Power Station (USNRC, 2012). The short-term station blackout (STSBO…
In this work, a mullite-zirconia composite was synthesized through the solid state reaction of alumina and zircon powders under transferred arc plasma plume. The influences of processing parameters such as time and torch power on the microstructure of the resultant composite were examined. For this purpose, alumina an…
The advances in proton exchange membranes (PEM)s is critical for improving the performance of fuel cells [1]. Membranes compromising perfluorosulfonic acid polymers such as Nafion have been used extensively due to their desired conductivity and stability. However, these materials need to be saturated with water to obt…