Materials Literature
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This thesis studies varied features of clay mineral content in each diagenetic-very low grade metamorphism intensity band in the upper paleozoic in northeast of inner Mongolia,which looks illite crystallinity0.25(epimetamorphism band),illite crystallinity 0.25~0.42(anchizone),illite crystallinity0.42(late diagenetic z…
The molecular sieves absorbing polylactic acid(PLA)oligomer and industrial PLA were mixed in the twin-screw,and obtained the PLA granulation modified by molecular sieves. The influence of molecular sieves on the mechanical properties of PLA was studied,and the results indicated that the best reinforced effect occured…
In order to study the influence of carriers on platinum(Pt) based hydrophobic catalysts' activity,and explore the practicability of applying silicon carbide and cerium-zirconium composite oxides as carriers of hydrophobic catalysts,Pt based catalysts were prepared by microwave heating method,with carbon black,nanomete…
The causes of head splits of a workpiece in hot rolling process of free-cutting stainless steel were analyzed.It was found that there is a relationship between the head splits and morphology of sulphides in the steel.A thermomechanical simulation test was therefore carried out to investigate the effect of reheating te…
Microcapsules of HBCD with melamine formaldehyde resins wall were prepared by in-situ polymerization.Effects of polycondensation temperature,polycondensation pH,mass ratio of core material and wall of microcapsules on appearance of the microcapsules were discussed.The physical and chemical properties of the microcapsu…
The stacked spiral thin-film transformer is designed and fabricated in this paper,.The mechanism of ferrite thin film is discussed.Primary spiral and secondary spiral are on the different layer and have the same shape.Air core transformer and magnetic core transformer are made with SiO_2 or ferrite thin film between t…
As compared to TiO2 photo-catalyst,the surface activity,photocatalytic activity and thermal stability of TiO2/SiO2 composite catalyst,which prepared using SiO2 as carrier or nuclear,are better.The precipitated silica was obtained from fly ash.The titania/silica(TiO2/SiO2) composite was prepared by chemical coating met…
Porphyrinated poly(γ-stearyl L-glutamate)s ( PSLGs ) were synthesized by the ring-opening polymerization of γ-stearyl L-glutamate N-carboxyanhdyride( SLGNCA) with 5-(4-aminophenyl)-10,15,20- triphenylporphyrin (APTPP) and corresponding zinc and cobalt porphyrins ( ZnAPTPP,CoAPTPP ) as initiators. Intrinsic viscosity m…
The luminescence properties of 23MgO-11CaO-15Al_2O_3-51SiO_2 glasses(mole ratio) doped with 0.5%,1.0%,2.0%and 3.0%(mole fraction,the same below) Bi_2O_3 were investigated.Absorption spectra,emission spectra and fluorescence lifetime of the glasses were measured.Electron paramagnetic resonance was used to study the str…
This paper investigates the effect of technology parameter on properties of high temperature constant modulus FeNi35Co20AlNbTi alloy and analyses the effect of solution process,working process,ageing process on properties,we have achieved suitable process.
The casting surface alloying process was adopted to prepare on the surface of gray iron (HT200 grade)casting an alloyed hardening layer which consisted of boride as main component and dispersively distributing high carbon ferrochromium as reinforcing particles. It was considered based on the analysis that the ingredie…
Based on a 1780mm hot strip rolling line,the wear curve of work roll of F_4 finishing stand was measured, and the measured value was compared with calculated one.The deviations of upper roll and bottom roll was 96.5μm and 78.3μm.Therefore,the parameters of roll wear model was optimized,and the good effects were obtain…
This paper introduces a new severe plastic deformation(SPD) process named as CTE process which combines the Twist Extrusion with Extrusion against the asymmetric deformation of TE process.Pure aluminum was used to investigate the deformation of CTE process via finite element method.The amount and distribution of effec…
Fe60Co8Zr10Mo5W2B15 bulk amorphous rod with a diameter of 2 mm was prepared by copper-mold vacuum suction casting.The microstructure and thermal stability of the amorphous alloy as well as the effects of isothermal annealing on its mechanical properties were studied by X-ray diffractometer,differential scanning calori…
The use of a permanent stainless steel cathode plate in both electrowinning and electrorefining applications has long been accepted as a proven technology for cathode copper production.Correct management of the operating system and attention to detail will ensure the life of the electrode in both application.Chloride…
Simulating molten steel using Sn-32%Pb-52%Bi low-melting-point alloy,the metal free surface fluctuation and deformation behavior with alternating magnetic field was investigated.The results show that the meniscus becomes camber due to alternating electromagnetic field,and the free surface is keeping fluctuating.There…
Effects of different fluxing agents on the luminescent properties of Eu2+-doped MgO·2SrO·SiO2 phosphors were studied.The results indicate that the sample with 3% in mass BaF2 as fluxing agent has the best luminescence property.The emission spectrum excited by 400 nm ultraviolet light was evaluated by Gaussian fitting.…
The application of SAPO-34 molecular sieves in catalyzing light carbon compounds to light olefins (including methanol,dimethyl ether,methyl halides to olefins,ethanol dehydration to ethylene), C_4-C_8 alkene and alkane cracking to propylene,paraffin oxidation or direct dehydrogenation to olefins,the selective reductio…
Objective To study thermo—luminescence characteristics of CaSO_4 phosphor doped with(Li, Dy,Tm) under different anneal condition so as to confirm the optimum temperature of anneal treatment,and to discover the relationship between temperature of anneal treatment,impurity and thermo—luminescence characteristics.Methods…
Microstructure and properties of the annealed TWIP steel,with cold rolling reductions of 50%,60% and 70%,were investigated by static tensile test,metallography,SEM and TEM.The results show that the microstructure of the TWIP steel before and after deformation is austenitic single phase.The TWIP steel possesses the bes…