Materials Literature
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This study pursuits a goal to assess bond strength of concrete confined by shape memory alloy (SMA) wire jackets that can provide active confinement due to shape memory effect. This study uses NiTiNb SMA wires which show more wider temperature hysteresis than normal NiTi SMA wire. Thus, NiTiNb SMA wires are more appli…
Pyrazole functionalized phthalodinitriles derived from 4,5-dichlorophthalonitrile by SnAr reactions were used as precursors for the synthesis of phthalocyanines substituted with pyrazolyl groups in the 2,3,9,10,16,17,23,24-positions. The phthalocyanines were characterized by means of MALDI-TOF MS, IR, NMR and UV-Vis s…
Amorphous alloy exhibits high permeability and extremely low iron loss compared to magnetic steel sheet. Therefore, it is expected to contribute to the efficiency improvement of electromagnetic application products such as motors, generators, and transformers.In this paper, we examined an axial-type motor that uses th…
The molecular magnet material, cobalt-Prussian Blue, has been synthesized using chitosan as a morphological structure-directing agent. The strong chelating ability of the biopolymer ensures that the inorganic phase remains nanoparticulate. SQUID magnetometry reveals that the nanoparticles exhibit a sharp ferrimagnetic…
Nanocrystalline powder of Tm3+ doped lutetium oxide, Tm:Lu2O3, has been synthesized by the sol-gel Pechini method. Differential thermal analysis, X-ray powder diffraction and transmission electron microscopy were used to investigate the effect of Tm3+ ion on the structure and morphology of samples. In all cases, the o…
Memory device scaling is facing increasing challenges due to the limited number of read and write cycles in flash memories, capacitor scaling limitations for DRAM cells, high lithography manufacturing costs, and low return-on-investment (ROI) from fab investments. Hence, emerging memories, based on new materials and c…
Wheat straw particleboards were made using urea-formaldehyde (UF) and acrylated epoxidized soy oil (AESO) resins with two resin content levels: 8% and 13%, and three pressing times: 8, 10 and 12 minutes. Physical and mechanical properties of the boards were investigated. Results showed that AESO bonded particleboards…
Stacked porous octahedral tin phosphate Sn(2)P(2)O(7) nanodisks, with a thickness and a width of 20 nm and 200 nm, respectively, were prepared from quenching hydrothermally prepared (SnHPO(4))(2).H(2)O at 600 degrees C. The first discharge capacity was 600 mA h g(-1) while the capacity retention, even after 220 cycles…
Tungsten is a candidate material for plasma-facing first wall of a fusion power plant. Understanding of defects, tritium and helium behaviour in plasma facing materials [PFM] is an important issue for fusion reactor from viewpoints of its mechanical properties under neutron irradiation. Experiments with high-Z materia…
The exchange between different equilibrium and out-of-equilibrium platinum coordination modes can be orthogonally controlled thermodynamically with a proton input and kinetically using light.
Bacterial proliferation is a severe problem in many oilfield systems, especially in aging systems with high water cuts. Depending on the types of microorganisms present, they can cause microbiologically influenced corrosion (MIC) or biofouling of filters, membranes, and metal surfaces. Common oilfield bacteria include…
Λ- and Δ-enantiomers of cis-[CoBr(NH3)(en)2]Br2 were obtained by absolute asymmetric synthesis. The interactions between the achiral 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin (TPPS) and two chiral cationic Co(III) complexes were studied by UV-vis spectroscopy, circular dichroism (CD), fluorescence spectroscopy a…
Two new phasmidic mesogens with an integrated indigo core have been synthesized and their thermotropic properties were investigated by polarization microscopy and differential scanning calorimetry. Their surprising textural features are reminiscent of those known from some bent core mesogens. Common properties and dif…
Bars of Titanium Grade 2 were subjected to deformation by Equal Channel Angular Pressing, both at room temperature and at 300°C. Additionally, some specimens were cold rolled up to 70% reduction. From tensile tests, data such as yield, maximum strength, elongation and area reduction were obtained. Results show that th…
The ferromagnetic exchange interaction between Co and Mn in Heusler alloys has been phenomenologically investigated by analyzing the composition dependence of the magnetic moment and the Curie temperature in a series of quaternary CuCoMnAl alloys. The curves of the composition dependence of the magnetic moment show an…
The molecular and mechanical characteristics of in situ degradation behavior of chitosan-polygalacturonic acid/hydroxyapatite (Chi-PgA-HAP) nanocomposite films is investigated using Fourier Transform Infrared spectroscopy (FTIR), Atomic Force Microscopy (AFM), and modulus mapping techniques for up to 48 days of soakin…
A nanocrystalline magnesium material with a high specific surface area is expected to react rapidly and reversibly with hydrogen gas to yield magnesium hydride, a hydrogen storage medium. In this paper, the feasibility of the synthesis of magnesium materials for hydrogen storage applications by pulse electrodeposition…
A SrTiO3 hetero-nanostructure was synthesized via solvothermal reaction using a protonated trititanate nanowire (H2Ti3O7) and strontium hydroxide octahydrate (Sr(OH)2·8H2O) in an ethanol/water mixed solvent system. The ethanol to deionized water volume ratio was the controlling parameters for determining the phase for…
The effect of specimen shape on the low cycle fatigue life of reduced activationferritic/martensitic steel, F82H IEA-heat, was investigated to develop a reliable smallspecimen test technique (SSTT) for fatigue. The low cycle fatigue test was carried out at room temperature in air at a total strain range of 0.8–3.0%. O…
The liquidus and solidus for the Ni-rich side of the Ni-Nb and Ni-Ti systems on a region of Ni-Nb and Ni-Ti systems of <10 mass% Nb or Ti were measured in order to establish the phase equilibria between the liquid and fcc phases. The thermodynamic parameters for both systems were reassessed based on the experimental d…