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。
Ferrites are magnetic ceramic materials which have additional metallic ion in ferrous oxide compounds. Ferrites are usually classified as soft or hard ferrites. In this study, characteristics and magnetic properties of magnetic materials having NiO1–xZnOxFe2O4 structure were investigated. Mechanical mixing of high pur…
We report new wide band gap engineering for graphene using slow Cs + ions, which allows both fine-tuning and on–off switching capability of the band gap in a range suitable for most applications sustaining the nature of Dirac fermions.
Spark plasma sintering (SPS) was used to synthesize Nano-structured Fe-18Cr-2Si alloy with Fe-18Cr- 2Si ball milled powders. SPS was carried out in vacuum at three different holding time (5, 10 and 15min) at a fixed sintering temperature (1100 °C) and applied pressure (50MPa). Potentiodynamic Polarization (PDP), Linea…
Solid oxide fuel cell (SOFC) is considered to be a highly efficient device to convert chemical fuels directly into electrical power. Because of multilayer composite arrangement of cells, mismatch of the thermal expansion coefficients, chemical/thermal gradient, or phase change of the materials will result in residual…
Nonlinear vibrations in strained monoatomic carbon chains are studied with the aid of ab initio methods based on the density functional theory. An unexpected phenomenon of structural transformation at the atomic level above a certain value of the strain was revealed in cumulene chain (carbyne-β). This phenomenon is a…
This paper presents results from an in-house, finite-difference (FD) code to model ballistic impact into flexible composite body armor. The code, written in MATLAB, runs well on a high-end PC. The version we consider in this paper models the postimpact, pre-failure behavior of non-woven, cross-plied sheets made from U…
In this study, the influence of mechanical surface treatments on the Sandelin Phenomenon in silicon containing steels was investigated. For this purpose, various surface topographies with/without deformed zones were produced on the steel samples with different silicon contents by applying mechanical surface treatments…
A facile method is described to prepare micron partly hollow dumbbell silica particles in a single step. The obtained particles consist of a large dense part and a small hollow lobe. The spherical dense core as well as the hollow lobe are covered by mesoporous channels. In the case of the smaller lobe these channels a…
Pb 2 Bi 2 GaB 3 O 11 possesses a moderate birefringence of 0.07 at 589 nm originating from two stereoactive lone-pair cations and π-conjugated BO 3 groups.
Due to the negative publicity of PVC, polypropylene is attracting increasing attention as an alternative material for flexible medical packaging. Propylene-ethylene random copolymers (PP-R) are usually the materials of choice as they are suitable for the preparation of retortable, transparent films and molded items, s…
Nowadays, the energetic efficiency becomes one of the major interests of the global society. Thus, the energetic challenges of the new century enforce the scientific and industrial environment to the development of new efficient materials, which present more than the classical thermal properties, according to the ener…
, , , (
The photoluminescence (PL) evolution of SiQDs respect deposition and annealing temperatures is studied in a combined manner. The PL identified changes are associated to changes in thin film composition. 150 °C is identified as an important threshold.
Taking account of the fact that there is complex space load on the carriageway of the South highway stream crossing it is reasonable to use numerical method for determination of stain and tension pavement condition based on the solution of elasticity theory equations – Finite Element. The application of numerical mode…
Influence of Solvents in HF Solutions on Anodic Formation of Mesoporous Silicon, Revealed by the Characterization of Mesoporous Silicon Rugate Filters, Urata, Tomoko, Fukami, Kazuhiro, Takeda, Naoto, Sakka, Tetsuo, Ogata, Yukio H.
In the last decades, bio-derived natural materials, such as vegetable oils, polysaccharides and biomass represent a rich source of hydroxyl precursors for the synthesis of polyols which can be potentially used to synthesize “greener” polyurethane foams. Herein a bio-based precursor (obtained from succinic acid) was us…
Transmission and reflection volume gratings were produced in conventional elastic materials by introduction of benzophenone derivatives and following UV-holography exposure.
In present work, NiFe2O4(NFO), ZnFe2O4 (ZFO) and Ni0.5Zn0.5Fe2O4 (NZFO) are synthesized by microwave assisted co-precipitation route. Their structural properties are confirmed by X-ray diffraction and data is fitted through Reitveld refinement using Full-Prof software suite. After refinement, the systematic crystal st…
Nanoparticles of Mg0.5Zn0.5Fe2O4 ferrite have been synthesized by co-precipitation method. XRD and Mössbauer spectroscopic results of Mg0.5Zn0.5Fe2O4 annealed at 200 °C, 500 °C and 800 °C are reported. It was observed that the crystallite size increases and the lattice parameter decreases with increase in annealing te…
The present paper investigates high-temperature sulphate corrosion of basic refractory ceramics containing magnesium spinels (MgAl2O4, MgFe2O4, MgCr2O4 and their solid solutions) widely used in metallurgy, chemical, ceramic and glass industry. This group of refractories are exposed to a number of destructive factors d…