Materials Literature
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In this paper, the dielectric properties of ZnO-Bi2O3 based varistor ceramics doped with Li are investigated by Novocontrol wide band dielectric spectrometer. It is found that Lithium is an amphoteric impurity. If the content of Lithium is very low, It will enters into the interstitials and Lithium interstitial is for…
The ingot of Sm-Fe alloy was prepared by vacuum melting. After a process of coarse crushing, it was made into Sm-Fe ribbons by melt-spinning. By analysis of XRD and SEM, it was confirmed that the ribbons composed of fine Sm2Fe17 columnar grains with almost the same orientation can be obtained under the condition of 5~…
The effect of Mn addition on mechanical property and corrosion behavior of hot rolled 19 % Cr duplex stainless steel was investigated. The ultimate tensile strength of specimen decreased from 950 to 840 MPa with increasing Mn content from 3.6 to 5.5 wt.%, and further decreased to 768MPa with Mn content addition up to…
In order to improve the filtering effect of the bag filter, ultrafine sea-island fiber nonwovens is used to produce ultra-fine structure dust filter material. At the beginning, sea-island superfine fiber needle-punched nonwoven production technology is introduced. And then testament is made to tensile breaking strengt…
Size controllable Barium titanate nanoparticles were synthesized in microemulsion consisting of water, OP-10, hexanol and cyclohexane under atmospheric pressure and low temperature, with Ba (OH)2·8H2O and tetrabutyl titanate used as starting reactants. Products were characterized by powder X-ray diffraction (XRD), tra…
Trihydridosilanes can provide a route for generating self-assembled monolayers on metal substrates. Under mild conditions, these precursors interact with a variety of clean, hydrogenated and fresh metal and metalloid surfaces, including titanium, silicon and gold. All classes of hydridosilanes have minimal interaction…
A low-cost non-vacuum process for fabrication of Cu2SnSe3 film by sol-gel method and knife-coating process is described. First, a certain amount of Copper (I) chloride and tin (IV) tetrachloride was dissolve into the mixture of water and alcohol and then some Polyvinyl Pyrrolidone (PVP) was added to the solution to ob…
Commercial dutasteride crystallizes in the orthorhombic space group P 2 1 2 1 2 1 (#19), with a = 7.587 44(3), b = 9.960 80(5), c = 33.500 42(12) Å, V = 2531.862(17) Å 3 , and Z = 4. The structure was solved and refined using synchrotron powder diffraction data, Rietveld, and density functional techniques. The most pr…
Well‐ordered, globally oriented composite fibers with micro/nanowire arrays of polystyrene (PS) fibers embedded in polyethylene (PE) were prepared by an iterative melt co‐drawing and the bundling technique. With section‐cutting of the PE/PS fiber and the dissolution of inner PS, porous PE fibers were obtained. Optical…
A series of Li/MgO/Al2O3/FeCrAl monolithic catalyst with different Li contents were prepared by a wetness impregnation method. The effects of Li contents in the catalysts and reaction conditions such as GHSV and CH4/O2 on the OCM reaction were investigated. The results show that the conversion of CH4 and selectivity o…
A general avenue for the controlled preparation of conformal and highly luminescent monolayers of metal chelate complexes is presented, among them tris(8-hydroxyquinolinato)aluminium (Alq3) and bis(8-hydroxyquinoline)zinc (Znq2). Alq3 is an extremely important model compound for organic electronic applications - it ha…
An experiment focusing on the creation of phase diagrams involving nonconvalent derivatives of hydroquinone and bis[ N, N -diethyl]terephthalamide (HQ-DETPA) is presented. A phase diagram was assembled by taking samples of different compositions (i.e., 40% hydroquinone and 60% bis[ N, N -diethyl]terephthalamide, 70%/3…
Using SiC particles and powder, the modified Si and α-Si3N4 powder as the main raw material, Si3N4-SiC composite materials have been fabricated by gelcasting. The Si3N4-SiC suspension with 75vol% (volume fraction) solid loading exhibits shear thinning rheological behavior under a shear rate from 10 to 160s-1, which me…
The Japan Atomic Energy Agency has been establishing a database of operation and maintenance experience for the High Temperature Engineering Test Reactor. The objective of this database is to share information from operation and maintenance experience and make use of the knowledge gained in the design, construction, a…
Phosphorus (P) is an n-type dopant for conductive silicon nanocrystals (Si-nc's), the electrical activation of which may be monitored through a non-radiative Auger recombination process that quenches the Si-nc luminescence. We investigated this quenching mechanism through electrical measurements of Si-nc's. Infrared-e…
We have synthesized nanocomposites of poly (3-hexylthiophene) (P3HT) at 273 K and zinc sulfide (ZnS) nanoparticles at 353 K by the chemical route method. The synthesis of these nanocomposites is confirmed by UV-visible, high resolution transmission electron microscope, and Raman spectroscopy. We have measured photocur…
The water-based paint had been examined to prepare a new chromate-free insulating coating on silicon steels. The structure of the insulating coating was characterized by scanning electron microscopy, energy dispersive spectroscopy and infrared spectroscopy. Adhesion, high temperature annealing, and surface insulating…
Retained austenite has an important effect on strength and toughness of 20Mn2SiCrMo bainitic rail steel. In this work, the stability of retained austenite and mechanical properties have been studied. The results show that impact toughness of experimental steel has close relationship with the stability of retained aust…
Tungsten oxide WO3 films were deposited on p-type Si (100) substrates using atomic layer deposition (ALD) technology with 200 and 600 ALD deposition cycles and annealed at different temperatures. The thicker 600 ALD cycle WO3 samples were annealed at 150, 250, and 300 °C, whereas the thinner 200 ALD cycle sample was a…
This study presents optimization of various lignocellulosics and alkali pretreatment for maximum cellulase production by Trichoderma virdii sp. Maximum endoglucanase (642 IU/L) and exoglucanase (187IU/L) activity was achieved with maize straw at 5% concentration. Oat hay was the most suitable agro-waste for β - glucos…