Materials Literature
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The properties of mixed-phase (nanocrystalline/amorphous) silicon layers produced by reactive RF-sputtering are described. The chemical composition and nanostructure (i.e., Nanocrystal (NC) size and volume fraction) of the films were studied by Rutherford Backscattering Spectroscopy (RBS) and micro-Raman spectroscopy,…
A new organic nonlinear optical material 4-Benzeneazoaniline (C 12 H 11 N 3 ) was synthesized by diazotization and diazocoupling mechanisms. Single crystal of 4-Benzeneazoaniline was grown by slow evaporation of methanol solution at room temperature. Transparent crystals with size up_to 13x4x4 mm 3 were obtained. Sing…
This paper presents the application of artificial neural networks in the production process of spheroidal graphite cast iron. Backpropagation neural networks have been established to predict the microstructure constituents (ferrite content, pearlite content, nodule count and nodularity) of spheroidal graphite cast iro…
The effects of guanidine hydrochloride (GdnHCl) on the structure and stability of the D-galactose/D-glucose-binding protein fromEscherichia coli(GGBP) and its complex with D-glucose (GGBP/Glc) were investigated by intrinsic protein fluorescence and far-UV circular dichroism (CD). The role of calcium in the stability o…
This chapter summarizes the mathematical development of the structure-factor formalism. It starts with the definition of the structure factor appropriate for X-ray and neutron scattering, and includes the derivation of the appropriate expressions. Beyond the isolated-atom case, the atom-centred spherical harmonic (mul…
Preface Heat Treatment of Vitrified Grinding Wheels The Potential for Cost & Weight Reduction in Transport Applications Through the Use of Heat Treated Aluminum High Pressure Diecastings Quenching under Fog Conditions: Theory, Technique & Application on Rolling Mills AlCu2,5Mg Alluminum Alloy Heat Treatment: Theory, T…
NiFe2O4 spinel nanopowder was synthesized by low-temperature solid-state reactions where NaCl was taken as dispersant and FeSO4·7H2O,NiSO4·6H2O and NaOH as starting materials.The precursors prepared by grinding the dispersant and reacting substances sufficiently at room temperature were calcined to obtain NiFe2O4 spin…
Single-crystalline Sb2Te3 nanostructures, of which the bulk is one of the best thermoelectric materials at room temperature, are synthesized by chemical vapor deposition. The composition, crystal structure, and growth mechanism of the sample are investigated. According to our experimental results, Sb2Te3 normally grow…
We have successfully synthesized mesoporous silica-germania mixed oxide (Si1−xGexO2) with x up to 0.31 by controlling the reaction to delay hydrolysis and condensation until the precursors have sufficiently ordered around the nonionic templating agent. Small-angle X-ray diffraction (SAXS) and transmission electron mic…
The synthesis of new trans A(2)B(2)-substituted porphyrins bearing oxygenic substituent (methoxy, acetoxy, hydroxy) at the periphery of the ring are described. All of the synthesized products were characterized by (1)H-N.M.R., (13)C-N.M.R., and H.R.M.S. Electrochemical studies revealed two one-electron oxidations and…
Recent experiments involving near-contact underwater explosions on air-backed plates suggest the following failure mode categories: (1) holing and petaling, (2) complete or partial edge tearing due to shock only, (3) complete or partial edge tearing due to shock and bubble collapse, and (4) large deformation without r…
The aim of this paper is to show the recent progress in multi length scale modelling of the engineering materials. This progress is demonstrated using a series of examples addressing, in particular, the role of effect of the grain boundaries in shaping properties of nano-polycrystalline metals.
Co 2 MnSn Heusler alloy films were prepared by atomically controlled alternate deposition on MgO(001) substrates and the local magnetism was investigated using 119 Sn Mössbauer spectroscopy. It turned out that the magnetic environments around the Sn sites in the films prepared by this method are uniform in comparison…
We report here the controlled synthesis of (111) twinned BaTiO3 microcrystallites, which are widely known for their (110) ferroelectric twins. This (111) twinned structure was obtained through a composite hydroxide mediated process by using amorphous TiO2 powders. A twin assisted re-entrant growth model is proposed to…
A positive-type chemically amplified photosensitive poly(hydroxyimide) (PSPHI) based on the partially imidized poly(hydroxyimide) (PHI) prepared from 4,4'-[p-thiobis(phenylenesulfanyl)]diphthalic anhydride and bis(3-amino-4-hydroxyphenyl)-sulfone, 9,9-bis[4-(tert-butoxycarbonyl-methyloxy)phenyl]fluorene (TBMPF) as a d…
Hard disk drive (HDD) is a major device in information appliances. Market of HDD has expanded for over 10 years. Though many kinds of metal are used in HDD, especially some minor metal in printed circuit board (PCB) and rare-earth elements in voice coil motor (VCM) magnet, they haven't been recycled enough. In order t…
The BiTe-based alloys were fabricated by mechanical alloying and cold-pressing sintering. Seebeck coefficient and electrical conductivity were measured at the temperature range of 80—300 K. Results showed that the thermoelectric properities of the materials were excellent during the experiments. With the thermoelectri…
A nitrogen?phosphorus (N?P) Intumescent Flame Retardant (IFR) was applied for the halogen-free flame-retarded Polypropylene (PP) composition. The matrix resin, toughening materials and strengthening materials were selected for improving the tensile and impact properties of the flame-retarded PP. Orthogonal experiments…
The luminescence intensity of 3.5 MgO ⋅ 0.5 MgF 2 ⋅ GeO 2 : Mn 4 + was enhanced by 143, 141, and 149% when MgF 2 was replaced with CaF 2 , SrF 2 , and BaF 2 , respectively. MgF 2 contributes to the enhancement of the phosphor crystallinity by inserting F − into the structure and by decreasing the phase formation tempe…
In the recent decades, the use of unshaped monolithic refractories has been increasing greatly because of their significant advantages over other shaped refractory bricks of the same class. A low cement high alumina castable was synthetised and sintered at 1300?C in order to investigate thermal and mechanical properti…