Materials Literature
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Ti–Cr–V alloys have a higher protium (hydrogen atom) desorption capacity, but a larger hysteresis in the absorption and desorption processes than AB2 and AB5 type protium absorption alloys. It is desirable that the alloys have a smaller hysteresis for the use of hydrogen storage tanks. This paper aims to clarify the e…
Kiritani et al. have observed a large number of small vacancy clusters without dislocations at the tip of torn portions of fcc metals such as Au, Ag, Cu and Ni. Small vacancy clusters, rather than dislocation cell structures, have also been observed after high-speed compressive deformation, suggesting the possibility…
Characterization of the racemic species, which can be a racemic compound, a racemic conglomerate, or a pseudoracemate (solid solution), is a prerequisite for the design of crystallization resolution processes. It is useful to determine the solid/liquid equilibrium solubility of the enantiomer mixtures for crystallizat…
A series of poly(DL-lactide) grafted gelatins, as new bioabsorbable amphiphilic polymers useful in parenteral drug delivery systems and in tissue engineering, were synthesized by the ring opening polymerization of DL-lactide onto a fractionated gelatin with the molecular weight of 1.02 x 10(5). Using tin(II) bis(2-eth…
The influence of hydrogen in Fe, 301 stainless steel (SS 301), and Avesta 353MA on corrosion resistance in aqueous solutions was studied. The oxidation kinetics of uncoated and Pt-coated Fe was also investigated in at 500 and 700°C. Electrochemical and weight loss measurements were used to evaluate the corrosion resis…
Temperature dependence of electric permittivity, pyroelectric current, piezoelectric coefficients (d 33 and d 31 ) and electromechanical coupling factors (k 33 and k 31 ) of (Na 0.5 Bi 0.5 ) 0.86 Ba 0.14 TiO 3 single crystal have been measured. The presented crystal exhibits diffuse phase transition, ferroelectric pro…
We use ab initio Quantum Mechanical (QM) calculations to derive a force field that accurately describes the atomic interactions in BaTiO3 allowing, via Molecular Dynamics (MD), the simulation of thousands of atoms. A key feature of the force field (denoted ReaxFF) is that charge transfer and atomic polarization are tr…
Transition metal complexes encompass a unique pool of building blocks with diverse stereochemical, electrochemical and photophysical features. Despite the current interest in employing polypyridine-containing coordination compounds for the fabrication of functional assemblies, their full potential as synthetic buildin…
Ru thin films were prepared by metallorganic chemical vapor deposition using a cyclopentadienyl-propyl-cyclopentadienylruthenium(II) precursor and O 2 . The nucleation and deposition behavior, thermal stability of the film surface, reaction at the Ru/TiN interface, and the stresses of the Ru thin films were investigat…
An ultra low carbon IF steel was severely strained by accumulative roll-bonding (ARB) process and subsequently annealed for 0.5 h at various temperatures ranging from 673 to 1073 K for strengthening by grain refinement. The ARB process was carried out up to 5 cycles (an apparent equivalent strain of 4.0) at ambient te…
Density functional molecular cluster calculations have been used to investigate the interaction of CO with the M 2 O 3 (101̄2) (M = Al and Ti) nonpolar surface. The electronic structure of the clean surface, the adsorbate geometry, vibrational parameters, and chemisorption enthalpies are computed and discussed. Theore…
Reaction of the heterotritopic ligand L, which contains one bipy and two terpy metal-binding domains linked by a flexible spacer with iron(II) chloride results in the formation of a [1 + 1] metallomacrocycle.
We have quantified surface associated coagulation of human blood plasma with a recently developed methodological system consisting of a Quartz Crystal Microbalance with Dissipation monitoring (QCM-D), a method that measures the weight of adsorbed molecules on surfaces as a function of frequency shifts of a quartz crys…
The effect of KCN etching on morphology and stoichiometry of polycrystalline and single crystalline CuInS 2 surfaces was investigated. The changes of the morphology were observed by in situ and ex situ studies using atomic force microscopy (AFM). The in situ investigations of the Cu-rich grown polycrystalline samples…
A theoretical concept for setting up 1D magnetic interactions between organic radicals aligned into chains within channels of inclusion compounds is presented by calculating collinear intermolecular binding energies using ab initio methods, followed by a Markov model to predict the characteristic length of chains. Exp…
Structural and electrochemical properties of radio frequency (rf)-sputtered vanadium oxide films with different thicknesses (0.175, 0.35, 0.8, 1.6, and 3.2 μm) have been investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM), impedance spectroscopy, and a galvanostatic charge/discharge system.…
The effect of chitosan on the growth of plant pathogenic fungi was investigated. Chitosan solubilized in acetic acid showed much higher and more consistent antifungal activity than that solubilized in HCl. The antifungal activity was not significantly affected within a DA (degree of deacetylation) range of 57.3-99.2%…
Quantitative microstructure analyses by atomic force microscopy (AFM) were performed for two kinds of JIS-SCM440 steel with the tensile strength of 1580 MPa; the modified-ausformed and tempered (MAQT) martensite and the conventional quench-tempered (CQT) martensite, where the critical diffusible hydrogen content for d…
The adhesion between a polyurethane (PU) adhesive and four foams containing different low-density polyethylene (LDPE)/ethylene vinyl acetate (EVA) blends was improved by using different surface treatments. UV-ozone, corona discharge, and low-pressure oxygen plasma treatments for different times were used to increase t…
Martensitic transformation temperatures and the two-way shape memory effect (TWME) in ductile Cu–Al–Mn alloys deformed at room temperature were investigated using differential scanning calorimetry (DSC) and the bending test. The Ms and Af temperatures were found to increase slightly with increasing degree of pre-defor…