Materials Literature
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Niobium foils as basement,Silicalite-2 membrane(MEL)/Nb composites were prepared by conventional in situ hydrothermal synthesis.The composite materials were characterized by XRD and SEM.The effects of synthesis temperature for the growth of zeolite crystals were studied.The results showed that the surface of the niobi…
Unique steady state elimination method is a new method for eliminating resonance in nonlinear system presented recently.The aim of this paper is to analyze the eliminating of ferroresonance in neutral grounding power system with frozen coefficient by this method,and corresponding results are obtained.The conclusion sh…
TiO2/C composites have been prepared by a sol-gel method.The presenc e of macroporous carbon could act as an interesting template.Degradation of met hyl orange results indicated that the TiO2/C was enhanced the photocatalytic act ivity than P25.On the other hand it can be recycle used several times.
The penpoint fracture wire sample of SWRH82B steel was analyzed by SEM and microscope.The result showed that the main reason of wire broken in direct drawing was high network cementite in hot rolled rod.Furthermore,suggestions were put forward to improve the quality of wire rod.
The 20CrMnTiH gear steel is successfully produced in BX Steel Group by adoption of the technological route of hot metal desulphurization pretreatment→combined blown process→LF plus RH refining→rectangular bloom CC(350 mm×470 mm)→hot charging walking beam type reheating furnace→24 high heavy rigidness and short stress…
The corrosion properties of 16MnR steel used to fabricate LPG spherical tanks in H_2S-containing solution were investigated by potentiodynamic polarization measurement and electrochemical impedance spectroscopy (EIS).The results show that H_2S content and pH value considerably influenced the corrosion of the 16MnR ste…
In the mixed solvents of ethanol and isopropanol,3-chloro-2-hydroxypropyl trimethyl ammonium chloride(CTA)was used as etherifying agent to achieve the cationic reaction of hydroxyethyl cellulose(HEC).The factors affecting the degree of substitution(Cds)and reaction efficiency(Cre)were investigated,and the structure of…
This article systematically discussed the origin,morphological features of She nationality,The rich folk culture,religion and history,culture and other aspect of She were condensed by the Phoenix-style.The reasons forming this unique cultural connotation are analyzed in depth,the process of She history and the essence…
The composite materials,maleic anhydride grafted(ethylene/octene) copolymer(POE-g-MAH)/organic montmorillonite(OMMT)/nylon 6(PA6),were prepared by using two kinds of different blending methods.The morphology and structure were characterized by scanning electron microscope(SEM),transmission electron microscope(TEM) and…
Cr-and Mo-doped high-Nb containing Ti-Al alloys were fabricated using directional solidification process.Their microstructures and mechanical properties were examined.Results showed that both the two alloys displayed basket-weave type microstructures.The laths in Ti-16Al-12Nb-3Cr-1Mo tended to be inclined with a small…
A Ni/MgO catalyst was prepared using atmospheric high frequency discharge plasma jet. The influence of three preparation meth-ods,the conventional method,plasma method,and plasma plus calcination method,on the catalyst activity was compared using CO2 reform-ing with methane as the probe reaction. The catalyst samples…
This paper discusses the research on a new type of sulfur-tolerant catalyst for LT only CO shift.The catalyst has adopted special type of three-element support,mainly using multi-metal such as Co,Mo,M1,M2 etc.as active component.The experimental result shows that the catalyst has good activity and heat-tolerant abilit…
In this study an aluminum ammonium cationic starch(ACS) was prepared with water solvent method,using ordinary cationic starch(CS),diallyl-dimethyl ammonium chloride monomer(DADMAC),and aluminum sol as raw materials,and cerium ammonium nitrate(CAN) as initiator.The influences of the initiator dosage,monomer content,rea…
Investigation on effects of hydrogen addition fraction on combustion and emission characteristics of SI gasoline engine was performed on a modified SI engine equipped with an electron-controlled hydrogen port-injection system,under the conditions of the excess air ratio of 1.1 and engine speed 1 400 r/min.The hydrogen…
In alkaline medium,a novel 3,3'-(biphenyl-4,4'-diyl)dipentane-2,4-dione-bridged di-copper(Ⅱ) complex,[Cu2(C22H20O4)(C15H11O2)2](C15H11O2=1,3-diphenylpropane-1,3-dione anion;C22H20O4=3,3'-(biphenyl-4,4'-diyl)dipentane-2,4-dione dianion),was synthesized and characterized by the element analysis,conductivity,infrared spe…
Performance requirements of plaster tablet mask paper were introduced,and described plaster tablet mask paper's technology key points and frequently questions's solutions in practice.
It was indicated that the plasticizing property of PVC-U couldn't be used to evaluate its processing property.Relationship between the melt viscosity of PVC-U with its melt strength was discussed as well as influencing factors on the melt strength.Reasons for that the plasticizing torque was more suitable for evaluati…
The glass fiber(GF) was corroded in the diluted acid solution for different times,and subsequently the GF/isotactic polypropylene(iPP) composites were prepared.The effects of the acid corroded GF on the interfacial morphology of GF/iPP composites were studied via the polarized optical microscope.The result show that t…
In order to study the nano-SiO2 of high-performance concrete workability and the mechanics properties of nano-SiO2,adding the nano-SiO2 to the high performance concrete,through the contrast test of basic concrete,fly ash concrete,nano-SiO2,fly ash concrete,so study the effect of nano-SiO2 of high-performance concrete…
Copper and zinc were used to replace silver and co-permeated onto the surface of AISI304 stainless steel via glow discharge plasma metallurgical route.The morphology and composition of the co-permeated coating were analyzed by means of scanning electron microscopy and energy dispersive spectrometry.The corrosion resis…