Materials Literature
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Understanding the burning rate of an automotive airbag propellant is extremely important. Airbag propellants need to produce gas on the order of milliseconds. The speed with which the airbag inflator needs to work ensures that the propellant experiences a large pressure transient during combustion. Therefore, one fact…
Effect of the hydrogen-charging on the uniaxial tensile behaviors of a ductile cast iron was investigated. It was found that the hydrogen-charging accelerated the process of crack growth from graphite in the uniaxial tensile loading condition. Further, the accelerated crack growth had a marked influence on the reducti…
A method for simulating the thickness distribution of cubic boron nitride (cBN) films deposited on a curved substrate using ion-beam-assisted vapor deposition (IBAD) is established and discussed. The deposition conditions are (i) boron arriving rate is 3.2 Å/s, (ii) ion current density is in the range 600–1600 μA/cm2,…
Acetic acid is one of the most important petrochemical products. Carbonylation of methanol in homogenous phase is one of the major routes for production of acetic acid. Amongst group VIII metal catalysts used in this process iridium has displayed the best capabilities. To investigate effect of operating parameters lik…
We have discovered three new layered nickel pnictides with perovskite-type layer, (Ni2As2)(Ba3Sc2O5), (Ni2As2)(Ba4Sc2O6) and (Ni2As2)(Ba4Sc3O8). They have tetragonal crystal structures with space groups of I4/mmm for (Ni2As2)(Ba3Sc2O5) and (Ni2As2)(Ba4Sc3O8), and P4/nmm for (Ni2As2)(Ba4Sc2O6). Their lattice constants…
As one of the highlighted gate dielectric materials applied in new generation of metal-oxide-semiconductor field-effect transistors (MOS-FETs), HfO2 has been intensively studied in recent years [1]...
Zinc oxide (ZnO) film deposition using a plasma-assisted mist chemical vapor deposition (CVD) with an inductively-coupled plasma source has been performed. The effects of the plasma exposure on film properties have been investigated with substrate location as a parameter. With decreasing the distance from antenna to s…
We analyzed the basic hazard characteristics for isoprene in the manufacturing process by evaluating the runaway reaction, kinetic parameters and safety parameters in this study. Experiments were carried out by calculating the thermal decomposition reactions for isoprene and mixed with aluminum oxide in non-isothermal…
An inkjet printing technology that combines printing and anti-crease in one process was developed for silk. Epoxy resin added to the pretreatment paste formulations was used as crease-resistant finishing agent for silk. The fabrics thus processed had satisfactory K/S color yield and colorfastness that were the same as…
Fully hydrolyzed ultra-high-molecular-weight polyvinyl alcohol (PVA) electrospun fibers with uniform diameters of about 200 nm were fabricated by reducing the viscosity of PVA in aqueous solution. A novel viscosity-modifier (hydrazine monochloride, HMC) gradually reduces the viscosity of PVA aqueous solution over a pe…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation R. Bhatt, R. Basu, S. Bhattacharya, A. Singh, S. Sen, G. S. Okram, V. Ganesan, D. K. Aswal, S. K.…
The electrical response of cobalt ferrites CoxFe 3-x O 4 nanopowders with various cobalt amounts were tested in presence of reducing gases (NH 3 ). The morphology, shape and chemical composition of the powders were fully characterized by transmission electron microscopy. For high cobalt amount, the response is typical…
The initial-boundary value problem of the one-dimensional dynamical plastic deformation within the scope of large strain of a metallic cylindrical rod has been analytically solved in a closed form. The deformation of the rod has been caused by its normal impact on rigid target. The rod material in the deformed part is…
Here we consider the inertial effect in a horizontal mushy layer during solidification of a binary alloy. Using perturbation technique, we obtain two systems, one of zero order and the other of first order. We consider a mushy layer with an impermeable mush-liquid interface and of constant permeability. The analysis r…
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Single-crystal TiO2(B) nanofibers were synthesized by the hydrothermal treatment in supercritical fluid at c.a. 375∼425°C under 23∼37 MPa using 10 mol·L-1 NaOH aq. followed by ion-exchange of Na to H in dilute HCl aq. and post-heating at 400°C in air. Thus prepared TiO2(B) nanofibers were characterized by XRD analysis…
The relations between the scattering matrix and relative Bloch permeability of periodic symmetric magnetic resonance metamaterial are investigated in detail by means of network theory and Floquet's theorem, and we retrieve the Bloch constitutive parameters for four split ring resonators using the relations. Full wave…
Fourier Transform Infrared (FTIR) Analysis was used to characterize secondary structure of gelatins extracted from shaari skin and compared with bovine and porcine gelatin obtained from commercial source. The concentration and temperature of extracted solutions were varied from 0.01 to 1.0 N and 4 to 80 o C, respectiv…
Polyvinyl alcohol (PVA) / starch (S) /Carboxy methyl cellulose (CMC) / MMT (Montmorillonite) bionanocomposite filmswere prepared fromPVA, MMT, CMC and soluble starch aqueous suspensions by casting method in the presence of a plasticizer that contained glycerol. The clay dispersion in the films was analyzed by XRD (X-r…
The condition to realize the negative refraction in the uniaxially anisotropic chiral medium with an optical axis parallel to the interface has been investigated. The variations of refraction angles of two eigenwaves with the incident angle for different electromagnetic parameters and chirality parameters are also ana…