Materials Literature
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Emulsion type sizing agents for carbon fiber were prepared by phase inversion emulsification. Standing stabilization and particle size analysis measurements were used to characterize the sizing agents. Meanwhile, the processability and surface morphology of carbon fiber were investigated. The effect of sizing agents o…
New dinuclear copper(II)-azido complex [Cu 2 ((3,4-MeO-Ba) 2 En) 2 (μ 1,1 -N 3 ) 2 (N 3 ) 2 ] ( I ) ((3,4-MeO-Ba) 2 En = N,N′-bis(3,4-dimethoxybenzylidene)-1,2-diaminoethane) has been synthesized and characterized by elemental analyses, FT-IR spectroscopy, and X-ray single-crystal diffraction. Complex I consists of a…
A recent iteration of fluorescence correlation spectroscopy (FCS), z-scan FCS, has drawn attention for its elegant solution to the problem of quantitative sample positioning when investigating two-dimensional systems while simultaneously providing an excellent method for extracting calibration-free diffusion coefficie…
Helical carbon nanostructures from ethanol over silica are successfully prepared through the addition of hydrogen during chemical vapor deposition. The helical structure formation appears to occur through hydrogen etching reactions enabling graphitic caps between neighboring tubes to merge, triggering the self-assembl…
Filler is one of the most important components of paper. Silica is a kind of excellent filler for its special chemical structure. Silica was prepared in the laboratory, and applied into paper. The dispersion properties of the silica with different sizes in paper sheets, the effect of smash on dispersion property of si…
The (DienH3)[AuCl4]3 · H2O (I) and (DienH3)2[AuCl4]Cl5 (II) compounds were obtained by the reaction of HAuCl4 with diethylenetriamine trihydrochloride (DienH3Cl3) in hydrochloric acid. The compounds were characterized by elemental analysis, X-ray diffraction, thermogravimetry, and IR spectroscopy. Crystals of I and II…
A layered magnesium silicate, an analog to natural talc, was synthesized by mechanical treatment of a mixture of magnesium hydroxide and hydrated silicic acid powders, as well as by heat treatment of aqueous dispersions containing magnesium hydroxide particles and silica sols prepared from different precursors.
A thermal-responsive polymer was prepared by partially acetalyzing poly(vinyl alcohol) (PVA). The completely reversible polymer aggregation and dissolution occur above and below a low critical solution temperature (LCST) for the aqueous solution of the modified PVA. The partially acetalized PVA (APVA) with higher mole…
The precursors of CdxNi1-xCo0.2Mn1.8O4(x=0,0.1,0.2,0.3) and Cd0.2Cu0.1Ni0.7Co0.2Mn1.8O4negative temperature coefficient (NTC) ceramics were prepared at room temperature by the solid reaction. These precursors were calcined and then sintered in air at 1100°C. Influence of the Cd and Cd-Cu doping on the microstructure a…
This paper presents the electrical and thermal characteristics of distribution class metal oxide varistor (MOV) under power frequency AC voltage changes. The leakage currents of MOV arresters are measured over a period of time against 1.0-2.0 p.u. of system voltage. For the experimental study, the thermal runaway prop…
Spectra of magnetostatic oscillations in layered dielectric-ferrite-metal structures are studied theoretically and experimentally. Hybridization of the magnetostatic oscillations and dielectric resonant modes is experimentally investigated both under saturation and in the domain region in the presence of a cylindrical…
The surface of a fresh cleavage of TiS 2 , TiSe 2 , and TiTe 2 crystals has been investigated using scanning tunneling microscopy with atomic resolution. All materials are characterized by triangular defects coinciding in shape with those supposedly formed as a result of the local change in the titanium atom coordinat…
The evolution of the microstructure and mechanical properties of electrodeposited nanocrystalline Ni with different annealing procedures was studied systematically. For the annealed specimens hardness decreases with increasing average grain size but the dependence changes at different grain size ranges. The specimens…
This paper investigates the influences of dosage of ground granulated blast furnace slag (GGBS) (0%, 20%, 40%, 60% and 80%) to chloride diffusion coefficient. And the time dependency of apparent diffusion coefficient as the submerging time from 60 days to 360days has also been studied. The result shows that the additi…
The high throughput of the silicon drift detector energy dispersive X-ray spectrometer (SDD-EDS) enables X-ray spectrum imaging (XSI) in the scanning electron microscope to be performed in frame times of 10-100 s, the typical time needed to record a high-quality backscattered electron (BSE) image. These short-duration…
Pure ?-sialon powders with the controlled z values (z = 2? 4) were successfully prepared from stoichiometric mixtures of constituent elements (Si, Al and SiO2) under a nitrogen pressure of 1 MPa by the combustion synthesis (CS) method. The raw materials were combusted with different ratios of a commercial sialon powde…
In this paper, the magnesium alloy AZ91D as biological implant material was treated by micro-arc oxidation. The effects on the coating growth of oxidation time and terminal voltages in zirconium solution and silicate solution were investigated respectively. Immersion and electrochemical tests were applied to study the…
The removal of Mn(II) ions from water using mesoporous silica as the adsorbent material is discussed. The mesoporous silica was prepared in an economic manner through the use of sodium silicate as an inexpensive source of silica and decaoxyethylene cetyl ether [C 16 (EO) 10 ] as the template agent. The properties of t…
A numerical study is presented for the n = 1 free-boundary toroidal Alfvén eigenmodes (TAE) in tokamaks, which shows that there is considerable sensitivity of n = 1 modes to the position of the conducting wall. An additional branch of the TAE is shown to emerge from the upper continuum as the ratio of conducting wall…
This contribution compares experimental nitrogen adsorption isotherms with molecular simulation results on effective non-porous silica models. A Molecular Dynamic (MD) annealing temperature scheme was adopted for the formulation of three samples of the solid surface. By means of Grand Canonical Monte Carlo (GCMC) simu…