Materials Literature
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The aims of this experiment are firstly to coducted a catalytic converter secondly, to find out to what extend Copeer and Crom ( CuCr ) as catalyst is effecient. To measure the concentration of Carbon Monoxide and Hidro Carbon on frame there are two conditions required. First is when the engine is on, and second is wh…
The first-principles plane-wave pseudopotential calculations have been done to evaluate the electronic structures, structural optimization, and formation energy of point defect in plutonium dioxide. The electron density of state and the charge density near the oxygen vacancy have been analyzed. The calculation results…
In this study, the transport characteristics of multiwalled carbon nanotubes were measured at low temperatures using the multiple-probe technique. Cr metal was used as the electrode material and good Ohmic contact to the tube was obtained. Measurements using two- and four-probe techniques showed Coulomb oscillation wi…
Duplex stainless steels are gaining global importance because of the need for a high strength corrosion resistance material. Duplex stainless steels are a family of two phase ferritic austenitic stainless steels. Two grades of duplex stainless steels were produced in a conventional induction furnace. In the first part…
this paper, Polyimide/nano-SiO2 composite films were prepared by means of ultrasonic mechanism. The corona-resistance of composite films were measured by high-voltage instrument which was assembled according to the international standard. The structure of the composite films were described by Fourier transform infrare…
A solidification path was determined for the processes of diffusion soldering and hot dip galvanizing occurred at constant temperature. The solidification path is shown for binary Ni-Al and Fe-C phase diagrams. The beginning of solidification path is estimated from measurement of the average solute concentration withi…
Polarizable ion model was used in describing the lattice dynamics in the Sn<sub>2</sub>P<sub>2</sub>S<sub>6</sub> and Sn<sub>2</sub>P<sub>2</sub>Se<sub>6</sub> ferroelectric crystals and their solid solutions. There has been obtained a good agreement of the calculated phonon spectra with the experimental data of Raman…
The oscillation property of a laser-induced cavitation bubble in a viscous fluid is investigated by a sensitive fiber-optic sensor based on optical beam deflection. The temporal and spatial evolutions of the bubble wall during the expansion and collapse are traced according to sequential waveforms induced by the bubbl…
The rms value of Barkhausen noise and residual stresses were followed as a function of the number of loading cycles in alternating bending fatigue of high strength steel. The measurements were carried out in several directions to ensure that changes in the angular anisotropy of Barkhausen noise could be detected. The…
The results of investigation of kinetics and mechanism for synthetic a-CoS oxidation process are presented in this paper. Based on experimental data obtained using DTA and XRD analysis and constructed PSD diagrams for Co-S-O system, mechanism of synthetic a-CoS oxidation process is suggested. Characteristic kinetic pa…
The purpose of this study was to determine the practicability of an experimental protective clothing by identifying the human body's physiological responses to it as well as the human body's comfort level when wearing it, particularly with the use of a processed charcoal material. The experimental protective clothing…
Oxide dispersion strengthening (ODS) steels have been considered to be very promising for fuel clad materials for high burn-up operation of light water reactor and super critical water reactor. For improving the corrosion resistance, increasing chromium concentration, which often resulted in degradation of mechanical…
The behavior of rod-coil diblock copolymers close to a surface is discussed by using extended scaling methods. The copolymers are immersed in selective solvent such that the rods are likely to aggregate to gain energy. The rods are assumed to align only parallel to each other, such that they gain a maximum energy by f…
In this paper, we predicted the possible mechanical properties and presented the electronic structure of Zr<sub>3</sub>AL<sub>3</sub>C<sub>5</sub> by means of first-principles pseudopotential total energy method. The equation of state, elastic parameters (including the full set of s…
Statement of problem. Acrylic resin is most commonly used for denture bases. However, acrylic resin has week points of volumetric shrinkage during polymerization that reduces denture fit. The expandability of POSS (Polyhedral Oligomeric Silsesquioxane) containing polymer could be expected to reduce the polymerization…
Mechanical spectroscopy is a powerful tool for the study of materials. In particular, it is shown that such a technique can help the characterisation of amorphous materials, whatever their nature (polymer, ceramic or metal). It also provides precious information for the understanding of the mechanical relaxations invo…
In this paper, we report micro-structural characteristics of electroplated Cu thin films with the variation of the current density applied during the electroplating process. We evaluated the surface roughness, the crystalline texture, the resistivity, and the grain size of the thin film in a wide range of current dens…
The phase diagrams of the Ni-Mo-B and Ni-W-B ternary systems in the region of less than 50mol%B were constructed by thermodynamic calculation, based on the data obtained by thermodynamic measurement of the related materials. We found three ternary eutectic points and three or two ternary peritecto-eutectic points as f…
Polylactide (PLA) is a biodegradable, compostable, thermoplastic polymer produced from corn, an annually renewable resource. In moving towards developing a sustainable vehicle, use of materials such as PLA could greatly contribute to the goal of a more environmentally friendly vehicle. To date, several non-automotive…
The stacking fault energies of fcc metals have been calculated by the embedded-atom method for 10 fcc metals, Cu, Ag, Au, Ni, Al, Rh, Ir, Pd, Pt and Pb. The calculated values are in good agreement with experimental results, that of Rh and Ir excepted.