Materials Literature
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The Materials Analysis and Particle Probe (MAPP) is a compact in vacuo surface science diagnostic, designed to provide in situ surface characterization of plasma facing components in a tokamak environment. MAPP has been implemented for operation on the Lithium Tokamak Experiment at Princeton Plasma Physics Laboratory…
We put forward a nite element method for static problems of cubic quasicrystals by variation of a suitable general potential functional. As an example we study a quasicrystal column containing a penny-shaped crack. The comparison with analytical results shows that the precision and eciency of the numerical solution ar…
Calcium phosphate cements (CPCs) with osteoconductive properties are limited in their applications because of their poor mechanical properties. This study investigated the additive effect of Dexamethasone-doped Halloysite Nanotubes (HNTs on the mechanical properties of CPCs. HNTs are nanosized tubes with alumino-silic…
The complexes [Ni(Pn) 2 ] 2 [Fe(CN) 6 ] · 3H 2 O ( I ), [Ni 3 (Pn) 5 ][Fe(CN) 6 ] 2 · 9H 2 O ( II ), [Ni 5 (Pn) 9 ][Fe(CN) 6 ] 3 · 9H 2 O ( III ), and [Ni(Pn) 2 ] 3 [Fe(CN) 6 ] 2 · 6H 2 O ( IV ) (Pn = 1,3-diaminopropane) were obtained. Their thermolysis was studied in oxidative (air), reductive (hydrogen), and inert a…
The evolution of structural parameters of deformation fragments and dynamically recrystallized grains during severe plastic deformation in a Bridgman chamber as the number of complete revolutions in torsion at room temperature increases is analyzed using transmission electron microscopy and electron backscattered diff…
The present study evaluates the influence of the residual stress on the oxidation rate of Zr at 650°C. It is shown that the oxidation rate can be substantially decreased by shot-peening. A systematic instigation of the various factors (such as the residual stress, the surface pollution and the chemical composition of…
A set up originally designed for e31fmeasurements of piezoelectric thin films was operated in a way to assess life time issues with simultaneous recording of polarization change, PV-loop integral, and piezoelectric beam deflection. A 1μm thick PZT 53/47 thin film was subjected to 109unipolar pulses with 150 kV/cm driv…
In recent years much attention has been devoted to expanded macrocyclic chemistry. Nevertheless, while several advancements were achieved in the synthesis of novel expanded porphyrin architectures, not much has been developed in the functionalization of these macrocycles. This report shows the selective replacement of…
The thermal decomposition kinetics of melaminium bis(trichloroacetate) dihydrate (MTCA) has been studied by thermogravimetry and derivative thermogravimetry techniques using non-isothermal experiments at three different heating rates 10, 15, and 20 C min -1 . Non-isothermal studies of MTCA revealed that the decomposit…
The dependences of the electrical conductivity of NaCl-KCl-ZrCl 4 molten mixtures with a molar ratio NaCl : KCl = 8 : 29 on the temperature (temperature range of 300–540°C) and the ZrCl 4 concentration (54.3–75.2 mol %) have been measured for the first time using unique cells.
The vanadium phosphorous oxide (VPO) catalysts, supported on Santa Barbara amorphous molecular sieve (SBA-15) with different vanadium loadings, were prepared by the precipitation method in an organic phase. Techniques such as X-ray diffraction, Bruner–Emmett–Teller method, scanning electron micrograph (SEM), and trans…
The results of the atomic-force microscopy, optical-absorption spectroscopy, and photoluminescence spectroscopy of porous silicon carbide (por-SiC) produced by anodic etching are reported. Analysis of the data shows that the cubic SiC phase is lacking in the porous layer and the photoluminescence signal from por-SiC a…
The impact of isothermal temperature and holding time on the microstructural evolution process is studied. This process is used to produce globular microstructures during partial re-melting of AISI D2 cold work tool steel. The experimental results showed that the optimum process factors should be selected according to…
In this study, the surface of polyester and polyamide fabric were modified by atmospheric pressure glow discharge plasma (APGD) under different operating conditions to improve the hydrophilicity and printability of the fabric. Different plasma treatment gases i.e., air, oxygen (O 2 ), nitrogen (N 2 ), argon (Ar), and…
Abstract The crystal chemistry of wavellite from Zbirov (Czech Republic), ideally Al 3 (PO 4 ) 2 (OH,F) 3 ·5H 2 O, was addressed by means of a multi-methodological approach based on electron microprobe analysis (EMPA) using wave-dispersive spectroscopy, single-crystal X-ray diffraction, powder and singlecrystal infrar…
Preparation of 5,15-dithiaporphyrin copper(II) complex was carried out by treatment of 5,15-dithiaporphyrin free-base with copper(II) acetate. X-ray diffraction analysis elucidated its dimeric structure in the solid state, in which the meso-sulfur atom served as an axial ligand to each pentacoordinated Cu ( II ) cente…
The purpose of this study has been to develop a low cost bonding technique for thermoelectric Mg 2 Si/Si-Ge modules that provides reliable bonding. Aluminum was chosen as an alternative material to conventional silver alloy braze because of its cost advantage and bondability. The shear strength of an aluminum joint be…
The interaction of a Pt 29 nanoparticle with pristine and reduced TiO 2 (110), (100), (101), and (100) surfaces in the rutile and anatase modifications has been modeled by the density functional theory method within the generalized gradient approximation (GGA). It has been demonstrated that the interaction energy of p…
In order to study iron loss distribution characteristics in stator and motor of induction motor, an improved iron-loss model with higher accuracy is proposed based on time-stepping finite elements. In Section Two, various iron loss formulaes are compared. followed by an miproved iron-loss model. In Section Three, the…
A series of analytical models have been developed to predict the penetration depth during slot die coating on porous media. Analytical models for both Newtonian and non‐Newtonian fluids were derived based on Lubrication Theory, Darcy's law, and a modified Blake–Kozeny equation. Using these models, the penetration dept…