Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Electroplated cadmium and hard chromium have been used extensively as protective coatings for the most demanding aerospace applications. Despite excellent technical performance and low deposition costs, these coatings are being phased out from industrial usage because of the serious health and environmental hazards th…
The effect of operating parameters such as flow rate of CO2 and concentration of Ca(OH)2 on the particle size distribution, crystallite size, and induction period of nano calcium carbonate synthesis in a sonochemical carbonization process has been investigated. Synthesis of calcium carbonate was carried out by bubblin…
This work reports on the magnetic properties of Ge100−xMnx (x=0–24 at. %) films prepared by cosputtering a Ge+Mn target and submitted to cumulative thermal annealing treatments up to 500 °C. Both as-deposited and annealed films were investigated by means of compositional analysis, Raman scattering spectroscopy, magnet…
É descrita em detalhes a montagem de um equipamento simples e de baixo custo para a medida da resistência ao desgaste de materiais cerâmicos. Para demonstrar a aplicação deste equipamento foram realizadas medidas de desgaste em amostras de alumina e zircônia parcialmente estabilizada com ítria. A resistência ao desgas…
Silica films (amorphous and crystalline) doped with erbium were fabricated on silica glass substrate and characterized. The inorganic-organic hybrid sol-gel method was used to prepare the films and the Na codoping induced the crystallization of silica film. Photoluminescence (PL) measurements revealed that the Er3+ io…
Abstract The crystallization and thermal degradation behaviors of polyhydroxybutyrate (PHB) grafted with maleic acid (MAc) and exo-3,6-epoxy-1,2,3,6-tetrahydrophthalic anhydride (ETA) are analyzed with differential scanning calorimetry (DSC), dynamic thermogravimetric analysis (TGA), and gel permeation chromatography…
Abstract The effect of plant species on soil-clay mineralogy has not been studied widely. In the present study, the clay mineralogy of top soils under Sequoia gigantia and grass regimes, maintained side by side for up to 150 y in the parks of several French châteaux, were investigated using X-ray diffraction (XRD) met…
Eu 2 O 3 (0.5 mol%) nanoparticles have been synthesized in a silica glass matrix by the sol-gel method at calcination temperatures of 700 ° C and above. Compared with the parent material SiO 2 , this nano-glass composite system shows enhancement of dielectric constant and diffuse phase transition along with magnetodie…
We have demonstrated multicolored reflections showing various whitish colors from a bichiral liquid crystal (LC) film. The bichiral LC film was fabricated by using left-handed and right-handed polymeric cholesteric liquid crystal (CLC) films with two different helical pitches and an isotropic polymer film in between.…
Dielectric spectroscopy was used to determine both the real (ϵ′) and imaginary (ϵ″) parts of dielectric permittivity of a novel material, a mixture of liquid crystal 5*CB and Al2O3 powder. The main objective was to investigate the influence of surface on the molecular dynamics of 5*CB. The high-frequency process was r…
Abstract Electrochemical copolymerizations of 2,3‐di(2‐thienyl)quinoxaline (M1), 6‐methyl‐2,3‐di(2‐thienyl)quinoxaline (M2), and 2,3‐di(2‐thienyl)quinoxaline‐6‐yl)(phenyl)methanone (M3) with 3,4‐ethylenedioxy thiophene (EDOT) were carried out in CH 3 CN/TBABF 4 (0.1 M ) solvent‐electrolyte couple via potentiodynamic e…
The interactions that take place in the corium melt in the reactor vessel in the case of a severe accident at a nuclear power plant were investigated in accordance with the MASCA international program. Results of the interaction between the oxide melt and iron (steel), partition of the main components [U, Zr, Fe (stai…
We have developed zinc-bismuth-phosphate glasses, which have deformation temperatures under 450°C and refractive indices higher than 1.7, in order to produce an antireflection structure on the surface by a glass-imprinting process. Two-dimensionally arrayed conical cavities of sub-wavelength size were fabricated on a…
Abstract Summary: Polyaniline has elicited the most interest due to its wide range of applications in many fields. However insolubility and infusibility are the main factors that affect the application of polyaniline. We have studied and worked on the synthesis of dispersible polyaniline and the results are described…
The new cubic Cd1−xMnxS/GaAs(100) epilayers were grown by hot-wall epitaxy, and their structural and optical properties were investigated by x-ray diffraction (XRD) and photoluminescence (PL). The cubic structure spectra of the Cd1−xMnxS epilayers were only observed in the Mn composition range of 0.000≤x≤0.050 from th…
IN the field of garments manufacture produced from circular weft …. knitted fabrics, it is important that we understand the variables and processes used so that we can predict their impact on dimensional changes. This helps in solving technical problems and satisfying consumer needs. The present investigation was carr…
Abstract The new, non-centrosymmetric chain silicate, K 2.9 Rb 0.1 ErSi 3 O 9 , was prepared by a high-temperature flux-growth technique, and its crystal structure was determined from single-crystal X-ray intensity data (Mo-Kα, 293 K) in space P1, with a = 6.672(1), b = 6.719(1), c = 6.725(1) Å, α = 108.87(3), β = 106…
In this paper, the chemical functionalization of carboxylated multi-walled carbon nanotubes (MWNT-COOH) by 1,2-phenylenediamine, have been investigated. MWNT-benzimidazole is obtained through MWNT-Amide reaction with POCl3 after 72h, which is confirmed by FT-IR, SEM, TGA, and elemental analysis. These functionalizatio…
We attempted to use wood shavings in their raw curled flake form as a base material in a mat to be used primarily as a heat-insulating/acoustic material in houses. The molding succeeded in producing a low-density (0.03 to 0.08 g/cm 3 ) wooden molding mat with bicomponent fibers as the binding component. After evaluati…
The application of adaptive neuro-fuzzy inference system for the prediction of strength transfer efficiencies of warp and weft yarns in woven fabrics has been studied. The developed neuro-fuzzy models are based on the input-output data sets of 264 woven fabric samples, out of which the data of 234 samples are used for…