Materials Literature
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In this study a 5 mm thickness low carbon B-steel hot band from BaoGang Group Co., LTD was tested as a sample. The microstructures of hot band and annealing sheet were observed by optical microscopy and scanning electronic microscopy, while the influence on deep drawability of the steel sheet at different coiling temp…
The effects of different melting process parameters of electron beam cold hearth on the Al element evaporation in TC4 alloy was studied.The results show that when the raw material is the VAR ingot,the secondary ingot is got by EBCHM.In the axial direction of the ingot from the top to the bottom,the Al content presents…
Wet processing of wool(cashmere)/cotton fabric was introduced as follows: enzyme complex and synergistic pretreatment was taken instead of traditional high temperature concentrated alkali process;conventional continuous pad dyeing and overflow dyeing were superseded by ultra-low liquor ratio(1∶3~1∶5) airflow dyeing;tr…
Unique steady state elimination method is a new method for eliminating resonance in nonlinear system presented recently.Its basic idea is that if there is a normal(non-resonance) solution for the system,and the steady state of the system is unique,the corresponding conditions are the conditions for eliminating resonan…
Catalyst particles in continuous reforming unit result in serious wear on the wall of lift pipe,which affects the security and stability of system obviously.On the basis of erosive wear mechanism of gas-solid flow,main influencing factors of the erosive wear on plastic materials are analyzed in this paper.Fluent discr…
The combustion characteristics of residues from co-liquefaction of lignite and sawdust under different operation conditions including solvent,temperature,atmosphere,and with/without water added were examined by a thermogravimetric analyzer.The effects of different liquefaction operation conditions on the combustion ch…
This review introduced the application on desulfurization and denitrification mechanistic and reaction kinetics.Some kinds of modification technology on ZSM-5 zeolite were discussed from the zeolite surface acidity and pore structure.The focus in the paper was on the recent advance and trend of development including h…
4,6-Dihydroxypyrimidine(DHP) was prepared via cyclocondensation and dimethyl malonate and formamide as raw materials.Nitroform(NF) was obtained via nitration-hydrolysis reaction of DHP.The structure of NF was characterized by means of UV,1 HNMR,13CNMR,FT-IR and MS.The mechanism of the nitration-hydrolysis reaction was…
The Microporous Crosslinked Starch(MCS) were synthesized from soluble starch, using N,N'—methylenebisacrylamide as the crosslinking agent,APS as the initiator.Adsorption characteristic of MCS for Zn~(2+) was investigated;The product after adsorption was characterized by Fourier transform infrared spectroscopy(FTIR) an…
Pressureless sintering process of 8mol% yttria-stabilized zirconia thin films fabricated by tape casting was investigated using SEM,TG-DTA and XRD techniques.The results indicate that the burnout of organic additives in the green tapes affects the shape of thin films significantly in temperature range of 75℃～1000℃.Con…
In order to study the surface microstructure and property variation of ultrahigh carbon steel after laser treating, ultrahigh carbon steel(mass fraction of C is 0. 016) was treated with 2kW continuous wave CO_2 laser. Then its microstructure was observed with a scanning electron microscope and its hardness was measure…
Linear polydichlorophosphazene(PDCP) is synthesized by thermal initiated ring-open polymerization of hexachlorocyclotriphosphazenes.Effects of polymerization time, temperature,monomer purity and air humidity on PDCP are discussed, while the properties of polydichlorophosphazene are characterized with FT-IR, TGA. TG an…
The magnetic permeability of Fe81Ga19 magnetostrictive alloy under different bias magnetization fields and frequencies was studied.In low frequency or quasi-static state,the permeability of alloy can reach more than 160.The permeability decreases with the increase of frequency.When the frequency is larger than 6 kHz,t…
The mechanical mixed C+BN powders were cladded on the surface of TC4 alloys by transverse flow CO2 laser,and hard composite coating was in-situ formatted.The microstructure of clad layers were observed and analyzed by Optical Microscope(OM),Scanning Electronic Microscope(SEM)and Energy Dispersive X-ray spectroscope(ED…
The tensile properties and microstructure of a high deformation X80 pipeline steel are investigated, and the effect of microstructure,especially the second phase,on tensile properties is discussed.The results show that stress-strain relationships before and after aging are both exhibited round house type with continuo…
Traditional light source has the defects of large energy consumption and short life time,therefore,it no longer meets the challenge of environmental protection.Whereas,limited by the current technology,there exists potential hazard of mercury in energy saving tri-phosphor fluorescent lamps.White light emission diode(W…
A nonliquid crystal azobenzene polymer was prepared.The obtained films exhibit fast bending response at room temperature,which can improve the efficiency of the transformation of energy from light to mechanical energy.The surface structure of the relief gratings was investigated by atomic force microscopy.The depth of…
Orthogonal experiments were used to investigate impact of experimental conditions such as temperature,media concentration,oxidant ratio,metal ions doping on the performance of polyaniline.Optimum reaction conditions were obtained which is acid concentration of HCl 1.2mol/L,monomer ratio of NH4S2O8(m=1.5g)and An 3/5,te…
Airflow generated by fabric air dispersion system(FADS) in penetration mode was visualized,and the distribution of pressure along the radial and air flow direction inside FADS was quantificationally analyzed.Experimental results show that airflow disperses out from porous fiber,and moves downward in very low speed,and…
Selective binding of DNA onto SiO2 under high salt concentration has been developed as a general protocol for DNA purifications.It is essential to correctly measure DNA concentration at high salt solution for evaluate the adsorption ability of solid surface.The standard curve of the concentration of DNA solution conta…