Materials Literature
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Based on the actual production situation of China functional textiles and recent international market development trend,demands of chemical safety,durability and applicability of functional textiles are discussed respectively.The demand of chemical safety on functional textiles includes the requirements of brand and c…
Based on SMS transmission,this paper presents a real-time monitoring system for insulator surface contamination. By setting up monitoring points in the predefined areas and with the SMS transmission platform,a star monitoring system can be constructed to monitor all the nodes in the monitoring net. So the monitoring s…
With self-assembled monolayer (SAM) as template, cubic cuprous-oxide (Cu2O) crystals with preferred orientation are obtained via simple and effective electrochemical redox process. Micro-region X-ray diffraction (XRD) and scanning electron microscope (SEM) were used to characterize the as-grown Cu2O crystals. Besides…
Using XRD,SEM,TEM and VSM methods,the shape,micro structure and magnetic property of the barium ferrite powder prepared by hydrothermal synthesized in different magnetic fields were discussed.BaFe2O4 powder was prepared at the reaction temperature of 150 ℃ without magnetic field.The powder is composed of BaFe12O19 wit…
The crystal structure and characteristics of Co-Ni-Al magnetic shape memory alloys(MSMAs) are described.The present situations in the heat treatment,alloying elements and shape memory effect of Co-Ni-Al alloys are summarized.Existing problems and the future development in Co-Ni-Al system are proposed.
In this work, nano-sized M-ferrites (M=Co, Ni, Cu, Zn) for the decomposition of carbon dioxide were synthesized by the chemical co-precipitation. From the thermogravimetric analysis, it was clear that the maximum weight loss of each sample took place below 350 . High temperature calcination resulted in more systematic…
In order to investigate the propagation and reflection of blast wave,the shock wave generated by cylindrical TNT charge above rigid plane surface was studied using explicit finite element code ANSYS/LS-DYNA.Results of the numerical simulation were compared with experimental datas and empirical equations,and they fit w…
Recent progress of fillers modification technologies which are coupling agents,surface-active agents,plasma is described.Application actuality of several main inorganic fillers in composite materials and filling effect of size,shape and quantity of fillers are introduced in this paper.
The Fe3O4 magnetic nanoparticles were prepared by the method of chemical co-precipitation first,the effect factors of influencing the properties of magnetic nanoparticles,such as precipitator selection,the quantity of precipitator and the way of addition,aging time,quantity of surfactant and Fe2+/Fe3+ molar ratio were…
The microstructure,component and hardness of the W(Mo)-Ni-Fe gradient tungsten heavy alloy,gained from degreasing pre-sintered,Mo infiltrated/divorced,and sintered 93W-4.9Ni-2.1Fe mixing powder compact,were investigated by optical microscopy,EDS analysis and micro hardness test.The results show that the microstructure…
Two kind of alumina ceramics were metallized by Mo-Mn-Ti-Si-Al system paint.The results of sealing strength indicated that Mo-Mn-Ti-Si-Al system paint was fit for 95% Al2O3 ceramic,but it was not fit for high pure alumina ceramics.And strength of metal-95% Al2O3 ceramic seals reached above 150MPa.By analyzing the micr…
Bis(2-ethylhexyl)-4-(4-methylpent-3-enyl)cyclohex-4-ene-1,2-dicarboxylate is prepared by the reaction of Diels-Alder and esterification using β-myrcene as raw materials.The optimal conditions of esterification are found as follows:with Brnsted acid ionic liquids [HSO3-bmim]+_as the catalyst,0.7% of the amount of cata…
The objective of this experiment is to reveal the effects of raw meat composition on the textural properties and sensory qualities of low temperature emulsified sausage.Eight kinds of poultry meat material including porcine hind leg,chichen breast,chicken drumstick,pork cut trimming,3∶7 meat,chicken skin,duck skin and…
Pseudo-equilibrium phase diagrams of non-and micro-alloyed nuclear grade 316LN steels are calculated through the thermodynamic method.The phase contents of the steels under different temperatures are also studied.It is found that under equilibrium conditions the precipitates in 316LN steel are Cr2N,M23C6,and phase,C-c…
Artificial bone repair materials play an irreplaceable role in today's bone graft surgery.Looking for bone repair materials with good biological properties has always been a hot research in orthopedics.Although there are a variety of bone repair materials,so far there is no perfect replacement for human bone.This revi…
The failure mechanisms of multilayer ceramic capacitors(MLCC) due to thermal residual stress were analyzed by using elastic-plastic finite element(FE) method.A simplified FE model was proposed to take into account the effect of multilayer structure,which can avoid the multilayer structure design and reduce the computa…
During getting the large-scale KDP(potassium dihydrogen phosphate,KH2PO4) crystals out from crystallizers cracking phenomenon occurs frequently,which usually results in large financial losses,to investigate mechanical effects of the cracks in large-scale KDP crystals and propose a reasonable method to prevent cracks,t…
Microstructure of plasma nitrocarburized/sulphurized composite layer on CrMoCu cast iron was investigated by means of SEM,TEM,EDS analysis and XRD.The effect of plasma nitrocarburization treatment on formation of sulphurized layer was examined.Results show that the roughening surface of the specimen after nitrocarburi…
Y2O3∶Eu3+ nanofibers were prepared by electrospinning,and then YF3∶Eu3+ nanofibers were obtained by fluorination of the relevant Y2O3∶Eu3+ nanofibers followed by deammoniation process via double-crucible method using NH4HF2 as fluorinating agent.YF3∶Eu3+ nanofibers/PVP composite nanofibers were fabricated using electr…
In order to improve the volume stability of the concrete for civil building,the undercalcined MgO expansive agent(UMEA) was prepared at lower temperature with magnesite as raw material,and the properties of cement paste containing UMEA were investigated including autoclave soundness,expansion under water curing at 20℃…