Materials Literature
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The effects of Zr addition on the microstructure and magnetic properties of the sintered NdFeB magnets were investigated by X-ray diffraction (XRD) and BH magnetic tester. The XRD analysis showed that both the Zr-free and Zr-doped samples are composed of main amount of Tetragonal phase Nd2Fe14B (P42/mnm) and trace amo…
Iron-stabilized aluminum titanate powder was prepared via the non-hydrolytic sol-gel method,using anhydrous aluminum chloride and titanium tetrachloride as precursors,anhydrous ethanol as oxygen donor,iron powder,iron chloride and iron ethoxide as iron stabilizers.The effect of iron stabilizers on the low-temperature…
Aluminum titanate nanopowder was prepared by the nonhydrolytic sol-gel method(NHSG) at low temperature,using anhydrous aluminum chloride and titanium tetrachloride as precursors,butanol as oxygen donor,polyethylene glycol(PEG) as dispersant.The influence of precursor concentrations,different gelation processes and PEG…
The hydrogen storage properties of Li(7)VN(4) and Li(7)MnN(4) were investigated both by experiment and by density functional theory calculations. Li(7)VN(4) did not sorb hydrogen under our experimental conditions. Li(7)MnN(4) was observed to sorb 7 hydrogen atoms through the formation of LiH, Mn(4)N, and ammonia gas.…
The process of formation of narrow size spherical PdNPs covered by cyclodextrins with an average size of 5.1 nm ± 0.5 nm has been investigated in aqueous solution at room-temperature. Analyses by UV-Vis spectroscopy and dynamic light scattering (DLS) at the beginning of reaction indicated a fast exchange of chloride i…
The cold crucible levitation melting prepared LaNi3.2-xMn03Cox (x = 0.2 ∼ 0.8) series alloys, the system of Co substitution of Ni on the alloy structure, hydrogen storage performance and electrochemical properties. XRD analysis showed that the cast alloy by the La2Ni7 phase, LaNi5 phase and LaNi3 phase composition; PC…
Four kinds of NRs were obtained by coagulating the fresh NR latex(NRL) with dif-ferent processes:NRL coagulated by acetic acid(NR-1),NRL coagulated by microorganism(NR-2),ethanolamine-blended NRL coagulated by microorganism(NR-3),and protease-blended NRL coagulated naturally(NR-4).The effect of preparation processes o…
162 Han et al. Abstract—We propose two metamaterials with sub-wavelength double-slots — single-side double-slot metamaterial and double-side double-slot metamaterial. The dependence of the electromagnetic resonances and local intensity enhancements on the structural parameters is studied by the finite-difference time-…
Using a hybrid computational model, we simulate the self-assembly of nanorods in phase-separating A:B:C ternary melts, where C constitutes the minority phase. We assume that the rods are coated with C ligands and thus have a preferential affinity for the C phase. Due to the preferential wetting interaction, the steric…
Two phosphonate-functionalized, side-chain modified copolymers were synthesized by utilizing either a Yamamoto or a Suzuki protocol, correspondingly. The copolymers' backbones were comprised of 2,7-dibromo-9,9-bis(6-bromohexyl)-9H-fluorene and 2,7-dibromo-9,9-dioctyl-9H-fluorene or 2,2′-(9,9-dioctyl-9H-fluorene-2,7-di…
Here we present a facile synthesis of crystalline polyaniline (PANI) with dendritic morphology by a slow vapour phase chemical oxidative polymerization, which opens up possibility for further understanding PANI's chain elaborately arranged, crystal structure model, and essence of the molecular interaction.
A mathematical model is proposed, describing formation of a molten metal film at the tip of sprayed anode-wire under the conditions of plasma-arc spraying of coatings. Numerical analysis of the influence of spraying mode parameters on the position of molten wire tip relative to plasma jet axis, thickness of liquid int…
Abstract Poly(propylene) is one the polymers with the widest range of commercial applications, though as all polymers, it is susceptible to degradation reactions. The addition of antioxidants to polymers is the main way to prevent or retard the degradation process. Extrusion is the most used industrial process to mix…
We present a facile and effective route for the fabrication of carbon microstructures by direct carbonization of polymeric photoresist patterns without distortion or collapse of the microstructure due to high-temperature pyrolysis. The 3D porous structure was a woodpile structure prepared by five-beam interference lit…
The article presents the results of a theoretical analysis of the manufacturing process of the deep sleeve with the bottom by means of a method of combining the indirect extrusion of a thick bush and broaching the blank through the conical die in one cycle of the stamp. The main advantage of application of the develop…
The present work provides a framework to understand a key question of supramolecular chemistry: how the composition of supramolecular aggregates in multicomponent systems is associated with the initial stoichiometries of aggregated components. In this regard, the presentation and discussion on the importance of the co…
A homologous series with carboxylate ( -COO-) and azo (-N=N-) as central groups have been synthesized by treating 4-n-alkoxy benzoyl chloride with 4-Hydroxy-3-methoxy phenyl azo-4’- chlorobenzene. The first and second members of the series are non-mesomorphic. The nematic property is exhibited by the propyl to hexadec…
It cannot be generally assumed that nanoparticles are genotoxic or that nanoscale size would increase the genotoxicity of the material. The large-scale in vivo genotoxicity testing of the various nanomaterials does not seem realistic. Information on nanoparticle characteristics associated with genotoxicity, carcinogen…
“Supply Chain Forum” provides a forum for compliance practitioners to share information about topics associated with the materials quality system. The information provided is helpful and practical so as to enable application in actual work situations. Reader comments, questions, and suggestions are needed to help us f…
Suggested is a mathematical model describing the thermal state of a solid metal wire used as anode in plasma arc spraying of coatings. Contribution of different heat sources to the energy balance of the spraying wire is numerically investigated. The effect of spraying parameters on the distribution of temperature in t…