Materials Literature
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Titanium aluminide (TiAl) is an advanced intermetallic material and is being investigated for application in turbocharger components for diesel engines. A TiAl turbocharger rotor consists of a cast TiAl turbine wheel and a Ti-alloy shaft that are joined by friction welding. Although friction welding is an established…
In our study, the electrical conductivity of CB / PVC / EPDM foam composite was made with carbon black, PVC and EPDM by melt blending and molded foam. The bubble structure and resistivity-temperature characteristic were observed. Influences of carbon black content, crosslinker of composite were investigated. When the…
A systematic compositional investigation on the HfO2: SiO2 composite films over a large range of HfO2 content still remains to be explored. In the present study, the reactive e-beam evaporated pure HfO2 and composite HfO2: SiO2 films have been investigated by Energy Dispersive X-ray (EDX) analysis while refractive ind…
The acquisition of hydrophobic surface offering liquid repellency is exploitable for diverse applications. This study examined the possibility of developing hydrophobic cotton fiber by employing atmospheric pressure plasma technique which is an environmentally friendly approach. We seek to determine a controlled hydro…
An equivalent network analysis for an arrangement that combines a microstrip line and coaxial conductor for the purpose of measuring permeability is discussed in this paper. The measurement circuit used consists of a coaxial conductor with a sample housed inside and a short microstrip line connected to both sides. The…
Different amounts of Al -5 Ti -1 B master alloy ( TiBAl ) were added to the AZ 31 magnesium alloy ( Mg -3 Al -1 Zn -0.2 Mn ) as grain refiner and the resulting microstructure and grain size distributions were studied after extrusion and equal channel angular pressing (ECAP). Results showed that the addition of 0.6% Ti…
Metal arc welding under oil (MAW-UO) is a new process developed to make in-situ internal repairs of in-service oil industry pipelines, tanks and vessels without the need to evacuate the service from the containing fluid. High nickel alloy welding wires were used to produce a tough, relatively soft, austenitic weld met…
The $NH_3$ -SCR characteristics of $NO_X$ over a V-based catalyst are experimentally examined over a wide range of operating conditions, i.e., $170-590^{\circ}C$ and $30,000-50,000h^{-1}$ , with a simulated diesel exhaust containing $NH_3$ , NO, $NO_2$ , $O_2$ , $H_2O$ , and $N_2$ . The influences of the space velocit…
Ti6Al4V is a difficult to machine alloy with low cutting efficiency and server tool wear. A series of orthogonal turning tests with coated carbide in higher speed scale was carried out on a CA6140 lathe. The experiential functions of tool life based on orthogonal experiment were developed. The tool wear morphologies w…
The aim of this work was to fabricate novel microPCMs containing dodecanol by an in-situ polymerization using methanol-modified melamine-formaldehyde (MMF) prepolymer as shell material and investigate the interface morphologies of microPCMs/epoxy composites treated by a simulant thermal process with a 10 times repeate…
The nonlinear optical properties of PicoGreen dye were measured using Z-scan technique and measurements were carried out at different incident intensities. Both open and closed Z-scan techniques were performed and results exhibited an intensity dependent nonlinear absorption coefficient and nonlinear susceptibility at…
Deep cryogenic treating (DCT) was applied on Cu-14Fe and Cu-8Cr in-situ composites and its effects on mechanical property and electrical conductivity of the composites were investigated. For comparison, the effects of DCT on properties of the corresponding composites with 0.1%Ag alloying (i.e. Cu-14Fe-0.1Ag and Cu-8Cr…
In this study, mechanical tests and microstructural analyses including TEM analyses with EDX of precipitates in modified 9Cr-1Mo steel were carried out to determine the cause of embrittlement observed after heat-treatment, which limits the usage of the alloy for power plants. Mod. 9Cr-1Mo steel specimens at austenite…
The purpose of this study is to propose a new method for multiple-focus generation to shorten overall treatment time as well as to avoid the formation of high intensity regions outside the target volume. A numerical simulation of the acoustic fields produced by a 1017-element spherical-section ultrasound phased array…
Protective sealing polyurethane composition, which is devised on the basis of sulfur-containing oligoether urethane regenerate synthesized according to chemical destruction of elastic polyurethane foam under the action of the mixture of thiodiglycol with oligo(oxypropylene)polyol, is given. It was shown that it exceed…
The tissue equivalence of diamond allows for accurate radiation dose determination without large corrections for different attenuation values in biological tissue, but its low Z value limits this advantage however to the lower energy photons such as for example in Mammography X-ray beams. This paper assays the perform…
Starch/Styrene Butadiene Rubber (SBR) biocomposites were prepared by directly blending of starch and SBR on a two-roll miller. Two types of starch: pure starch and modified starch (M-starch) were used as rubber fillers. M-starch were synthesized by grafting of methyl methacrylate (MMA) monomer onto starch backbone usi…
Finding ultra-small metallic contaminants is a big issue for manufacturers of lithium-ion batteries nowadays. Therefore, we have developed high-Tc SQUID systems for detection of such fine magnetic metallic contaminants. In this paper, we constructed an eight channel high-Tc SQUID gradiometer system for inspection of a…
The first-principle calculations of the electric field gradient (EFG) on oxygen site for SrTiO3 and BaTiO3 as a function of cubic lattice parameter a show the increase of the absolute value of the EFG under the lattice expansion due to the decrease of the population of σ-orbitals. It means that the p–d hybridization i…
This paper is focused on the estimation of the yarn density for the fabric organization analysis.The parameters related to the fabric yarn density are determined by a new technology,which is called Hilbert marginal spectrum based method. The proposed method first transforms the underlying fabric image into warp-direct…