Materials Literature
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Helium release and structure evolution of Zr tritide with fct-ZrH1.801 phase were investigated.It proves that the 3He release fraction is between 10-6 and 10-5 while n(3Hegen)/n(Zr)is smaller than 0.27.The 3He generated is trapped deeply in the tritide.The release fraction varies in wave with the temperature change be…
Combined with the thermodynamic model for ink droplet spreading and penetration in ink-jet printing and a kind of a simplified textile fabric permeability model,the authors established a new dynamic model for describing the spreading and penetration of ink droplet on thin textile.By utilizing that model when ink is de…
Angular dependence of the exchange bias in ferromagnetic/antiferromagnetic systems is an important issue in the study field of exchange coupling.Angular dependence of the astroid curve,the switching field,the critical angular and the energy density landscape were studied with the help of the Stoner-Wohlfarth model.The…
Polypyrrole(PPy) nanoparticles doped with dodecylsulfate sodium(SDS) were successfully synthesized by rapid chemical oxidative polymerization of pyrrole at 0 oC～3 oC using FeCl3 as an oxidant.Ag sol was prepared by chemical reduction method.The PPy-Ag nanocomposite was prepared by mixing PPy and Ag nanoparticles toget…
The process and key points for producing can body stock were introduced.The stocks can be produced both on conventional hot rolling line and continuous casting line,and then cold rolled.The structure,can wall scratch property,earring property,cupping property,deep drawing and mechanical properties of the can stock pro…
The influence of the treatment of spruce CTMP, aspen CTMP and Arauco BKP on paper physical properties was studied with air low temperature plasma. The chemical structure and the surface of spruce CTMP fiber treated by plasma was also evalu- ated by X-ray, XPS and SEM. The results indicate that the crystal- line degree…
The molten pool is considered to be a two-phase flow with free surface between air and molten steel in the present paper.In this case,the flow pattern of molten steel is studied based on the finite element method(FEM) during twin-roll casting.In addition,it comparatively analyzed the effects of free surface and the ro…
The burning rate of hydrogen-air pre-mixture on mesoscale is mainly determined by its chemical reaction rate.So a Laminar Finite Rate Model,the gas phase reaction mechanism for the combustion of hydrogen-air mixture which consists of 19 reversible elementary reactions and the dynamic mesh method are adopted to simulat…
[Objective]To understand the health status of radiological workers in a unit,to monitor the radiation protection of workers with long-term exposure to low doses of ionizing radiation,and analyze the cytogenetic changes of workers exposed to hazards.[Methods]The laboratory cytogenetic test was adopted to investigate 25…
Through the falling test and chiseling-hammering test conducted with the metal-sand composite mould cast low Cr grinding balls, it was concluded that peeling phenomenon had occurred with many balls before their early failure.The cracking initiated at the area of interface between the metal mould and sand mould, then t…
In-situ high-pressure impedance spectroscopy of CdS nanocrystals was measured with diamond anvil cell(DAC) which equipped with microcircuit up to 25 GPa.The change in complex impedance related to the phase transition from wurtzite to rock salt was observed.The results show that the effective scattering section of the…
Based on the study of the related theory of FEM and the model of recrystallization,a program for microstructure simulation was developed with Fortran,which not only could simulate the recrystallization during hot-upsetting,but also could calculate the average grain size.The results of numerical simulation chime with e…
According to the designed requirements of UV systems,a low-pass filter was studied and developed on K9 glass substrates with high reflectivity at 254nm and high transmittance in visible spectrum.According to the film designed theory,low-pass interference filter film was obtained by optimizing Needle method.The electro…
On the basis of the related essential glass transition theory,the main effects on glass transition temperature including composition,molecular weight and plasticization were debated.The importance of the glass transition temperature as a physico-chemical parameter in food systems was also emphasized.Together with the…
Upconversion materials LiLa(MoO4)2:Yb3+,Er3+(Tm3+) were synthesized by the sol-gel method.The as-prepared samples were characterized by the X-ray diffraction and the upconversion luminescence spectra were recorded by a spectrophotometer.Under a 980 nm semiconductor laser excitation,green upconversion emissions of LiLa…
ZnO:8YSZ (8% in mole yttria stabilized zirconia) electrolyte samples with different amounts of ZnO at 0,1% (in mole,the same below),2%,3% and 4% were sintered at different temperatures in air. The effects of sintering temperature and ZnO content on the sinterability,relative density,bending strength and conductivity o…
In this paper,the algorithm procedure of Ohno constitutive equation with strain nonhard-ening region for computation of stress,internal variable and consistent tangent matrices is analyzed and discussed. A material user subroutine UMAT for ABAQUS software was composed according to the investigation mentioned above. By…
Considering Fe4N structure as prototype,BC models in two ways of two sublattice and four sublattice were built by using the mean-field theory.The calculation formula of magnetization and free energy were deduced in these two systems.The conclusion is drawn that the two systems is equivalent by comparing the formula of…
Nanocrystalline TiO2 powders were synthesized from TiCl4 solution by the high-pressure microwave method under pressure ranging from 0.1MPa to 4.0MPa.The phase structures,microstructures and photocatalytic properties of the nanocrystalline TiO2 were investigated.It was found that the reaction pressure had a large impac…
Based on experimental analysis about water-resistance mechanism of MOC(magnesium oxychloride cement) and MOC products,it has been determined that residual MgCl2 is the essential cause resulting in the poor durability. And various kinds of Cl-ion catchers have been applied to improve MOC,in among that β-A catcher has t…