Materials Literature
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The solid complex of light rare earth samarium perchlorate with bis(benzoylmethyl) sulfoxide(L) has been synthesized and characterized by molar conductivity,elemental analysis and coordination titration. The composition of the complex was suggested as SmL5(ClO4)3·3H2O(L=C6H5COCH2SOCH2COC6H5).IR spectra studies indicat…
A four-ball machine was used to evaluate the antiwear performances of five kinds of compounds containing molybdenum in lubricating grease.These compounds include molybdenum dialkyldithiophosphate(MoDDP),molybdenum dialkyldithiocarbamate(MoDTC),sulphur and phosphorus free organo-molybdenum,molybdenum trioxide and ammon…
A series of Ni-Co/Mg(Al)O catalysts were prepared by calcination of Ni-Co/Mg(Al)O hydrotalcite precursor at various temperatures and used in the hydrogenation reforming reaction of toluene as a model tar compound.A C7H8 conversion rate of 100%,CH4 yield of 34% and CO yield of 66% were achieved for 35 h over the cataly…
ITO nano-powders was prepared by arc evaporating with 99.99% In and Sn as raw materials.The prepared powder has single cubic In2O3 phase in tetragonal and near-sphere pattern.The particle size of the powder is 30~70nm and the dispersity of the powder is good.ITO target with grain size of 5~10μm was prepared with the p…
Alkaline pretreatment and hot water prehydrolysis of eucalyptus chips were carried out.Two methods were used to determine and calculate the extraction yield of pentosan or pentose.One is indirect method,which is based on the difference of pentosan contents between the chips with and without pre-extraction.The other me…
For Carbon Fiber Reinforced Plastic (CFRP), electrical conductivity of carbon fiber can be used as a sensor for damage detection. The change of electrical resistance of the CFRP structure has been studied as a self-sensing system for monitoring damages. Todoroki et al. reported that the electrical resistance change me…
Homogenous mixture of multiwall carbon nanotube(MWNTs) and intermetallic(Fe3Al) matrix was obtained by ultrasoni-cation and ball milling.Transmission electron microscopy(TEM) and Fourier transform infrared spectrophotometry(FTIR) were used to analyze of the state of the dispersion of MWNT.It is found that the vine-lik…
With the development of the nano-material technology,the purification materials also develop rapidly.By add antimicrobial material to the traditional material,a new antimicrobial material that not only can filter bacterium but also has an effect of antimicrobial was manufactured.In this paper,the new development of an…
The heat conduction in a one-dimensional disordered harmonic chain and non harmonic chain when connecting with two different heat baths is investigated in this paper,by using the extended Ford,Kac and Mazur(FKM) formation.It shows that for the one-dimensional lattice system,under different noise reservoir properties,t…
In order to meet the demand of electronic and heat-radiating devices for Cu-Al composite,the roll-cladding technology for Cu-Al thin sheet was developed. The corresponding roll-cladding technology was optimized by the experiments. The varying regularity of thickness ratio in the rolling process of Cu-Al thin sheet was…
The nano-silicon nitride was modified by methylmethacrylate(MMA)-butylacrylate(BA)-vinyltriethoxysilane(VTES)terpolymer,the modified nano-silicon nitride/NR/SBR composite was prepared,and the properties of the composite were investigated.The results showed that,the average particle size of nano-silicon nitride modifie…
Corrosion of the steel bars in concrete is the major cause of premature deterioration of reinforced concrete structures. To improve the durability and extend the service life of concrete structures under chloride condition, various methods (such as adding admixture, using high performance concrete and epoxy coated ste…
Through conducting an on-line acoustic emission(AE) detection for partial discharge on a 240MVA power transformer by using a 16 channel system,discussion on how to identify the partial discharge signal and to realize 3D location from a very noisy environment with effective signal processing and 3D location techniques…
This article introduces the probable mechanisms of chitosan and chitosan-derivatives coating for putting off the senescence and softing of fruits and vegetables,physiological relationship and quality of chitosan coating during fruits and vegetables storage,the optimum concentration and effect of chitosan coating treat…
The rheologic stress and dynamic recrystallization behaviors of Cu-Ni-Si alloy during hot compression deformation process were investigated in the temperature range of 600-800 ℃ and strain rate range of 0.01-5 s-1 using Gleeble-1500D thermal-mechanical simulator.The results show that the dynamic recrystallization beha…
Author has briefly described the process flow for synthetic ammonia with combinative production of methanol and the Process features with double towers;has summarized the running situation for the synthetic ammonia in combinative production of methanol from aspects of heating and reducing of catalyst and its running s…
Tributyl citrate(TBC) terminated poly(D,L-lactide)(PBLA) was successively synthesized by tributyl citrate initiated ring-opening polymerization of D,L-lactide,which was used as a biocompatible plasticizer for high molecular polylactide(PLLA).The effects of different contents of PBLA on the performance of the mixture w…
Low-alloy TRIP-aided steels will exhibit excellent combination of strength with ductility due to the retained austenite present in their microstructure.The effect of heat treatment process on the formation of retained austenite in the low-alloy TRIP-aided steels was summarized.The effect of prior microstructure,interc…
Methylene blue solution was degraded by TiO2 particles doped Zn2+ as photo-catalyst.Parameters during preparation of the catalyst affected the photocatalytic degradation rate of methylene blue greatly.The photocatalytic degradation rate of methylene blue was the highest when calcining temperature was 500 ℃,incorporati…
The main causes of various fracture failure in forging dies were analyzed in terms of failure types and some corresponding preventive measures were proposed,which involves selection of materials,design of structure,forging technique,heat treatment and grinding machining,etc.