Materials Literature
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The ternary Cu-Sn-S system, as an important I-IV-VI group semiconductor with small or mid band-gap, have attracted great attention owing to broad application in photovoltaic devices and H2 evolution under visible light irradiation. In this contribution, Cu2SnS3 nanostructures were successfully synthesized by microwave…
Aim: to evaluate and compare surface properties (wettability, surface roughness and color) of paste bulk fill resin composite materials on baseline and after incubation in RedBull or Black coffee storage media and to find out if there is any change in these surface properties after 1 week and 1 month incubation. Mater…
The high density polyethylene( HDPE) and the wood powder( rubber wood flour or annatto powder) are used as the main raw material for the study and added with 0. 3% of UV absorbers( UV-531 or UV-1),extrusion molding them for PE based wood-plastic floor. 180 days observation was made for natural weathering effects on wo…
The microstructure evolution of Fe-Mn-Si shape memory alloy in the process of thermal mechanical training was studied through analysis by microscopy,XRD,SEM and TEM.The results show that thermal mechanical training is a repeated transformation process of stress inducedγ→emartensite and its reverse.Before the training,…
Multi-arc ion plating ceramic / metal multilayers,laser surface alloying coating and high velocity oxy-fuel(HVOF) spraying hard ceramics coating were prepared on 17-4PH stainless steel to study the influence of surface treatment on solid particle erosion resistance 17-4PH stainless steel.Then,the failure mechanism of…
Sandwich structure with folded core is a kind of new three-dimensionally structural material with lightweight,high specific intensity,high rigidity and potential of multifunction,and has acquired great attention from foreign scholars in recent years.It will become a new generation of ideal structural material with an…
The exclusive ferritic phase(α-phase)and austenitic phase(γ-phase)specimens were prepared on duplex stainless steel(DSS)on the basis of selective dissolution method.The electrochemical behaviors ofα-phase andγ-phase in 3.5% NaCl solution and 2mol/L H2SO4+0.5mol/L HCl solution were investigated.The results show that th…
Comparative studies were carried out to study the distribution,species and life-forms composition of Ottelia acuminata communities over the past three decades. Results showed that in comparison to year 1980: 1) Ottelia acuminata communities are only found in Lake Luguhu and Lake Jianhu nowadays. 2) Species composition…
To provide theoretical foundation for interior ballistic design of cased telescoped ammunition(CTA)gun,the influence of loading parameters variation of CTA gun on the interior ballistic process was studied.Based on the second ignition and combustion control technology of gunpowder,the properties experiments of interio…
The effect of SiO2 on the formation process of calcium ferrite which is the main composition of bonding phase in high basicity sinter is not very clear at present. So,X-ray diffraction(XRD),ore microscope(OM),and quantitative Rietveld analysis were used to analyze the effect of SiO2 on the formation process of binary…
The morphological features of Haplorchis pumilio(H.pumilio)and H.taichui were observed with hydrochloric acid carmine staining;The ITS2 sequences were amplified by PCR,analyzed by sequencing,and compared with sequences of H.yokogawai and Metagonimus yokogawai of Heterophyidae trematodes downloaded from GenBank;And the…
It is difficult to obtain high quality sulfur-doped GaSe single crystal due to the intensive convection and solution diffusion in the melt.High quality GaSe 0.89 S 0.11 single crystal with dimensions of 20 mm×60 mm was successfully grown by Bridgman method using modified furnace with crucible rotation technique.The c…
OBJECTIVE:To determine the equilibrium solubility of albendazole(ABZ)and its apparent oil-water partition coefficient.METHODS:The equilibrium solubility of ABZ in various solutions was determined at 37 ℃ by HPLC and saturation solubility method,including water,7 kinds of common organic solvents with different polariti…
The granulation behaviors of specularite fines in ferrous sinter mixture were studied. The results showed that the moisture had a great effect on granulation,and the optimal moisture content decreased with the increasing specularite fines ratio in the mixture. The dynamic results with different specularite fines ratio…
Effect of oxide impurities( alkali metals,alkaline earth metals oxides and SiO2) on mechanical properties and creep resistance of Al2O3 was investigated by pressless sintering process. The microstructure and mechanical properties of the samples were characterized by scanning electron microscope and universal testing m…
The W/CuCrZr alloy divertor component module was manufactured by hot isostatic pressing(HIP) technique. The interface properties of three modules which have the interlayers with 40 μm thick Cu coating produced by PVD method,2 mm thick TU1 Cu sheet and no interlayer,respectively,were investigated. The microstructure,we…
Molecular sieve absorbent is one kind of key material employed in the SF6 gas insulated electrical equipments. The ex-service molecular sieve absorbents from SF6 gas insulated electrical equipments contain SF6-degradation products. These SF6-decomposition products are poisonous, and also lead to environment pollution.…
The AerMet100ultra-high steel was cryogenic treated after quenched and then was tempered under different temperatures,the OM,SEM and TEM techniques were used to observe the microstructure after heat treatment.The effect of different heat treatments on the dynamic mechanical properties was investigated using the split…
Objective To prepare the polypyrrole film on the copper surface and study its corrosion resistance in 3. 5% Na Cl solution. Methods Polypyrrole films were electrodeposited on the copper surface using potentiostatic,galvanostatic and cyclic voltammetry electrochemical techniques. Scanning electron microscope was used t…
The experiment on simultaneous removal of NOx and SO2 from glass furnace flue gas by ozone oxidation and spray tow er was carried out. The experimental results show that the concentration of the sodium hydroxide as the spray solution has less effect on NOxremoval efficiency when pH is above 10,but SO2 in the flue gas…