Materials Literature
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Effect of Al2O3 doped on the high permeability MnZn ferrites was researched by means of comparing experiment data of different samples.The results show that a suitable amount of Al2O3 doped can inhibit ZnO evaporation so as to increase the initial permeability of MnZn ferrites,reduce the relative temperature coefficie…
Porous SiO2 /CuO composite was prepared by hydrothermal method with porous SiO2 as supporter,which was obtained through leaching asbestos tailings by acid.The effects of hydrothermal temperature and the mass ratio of SiO2 to CuO(i.e.m(SiO2)/m(CuO)) were investigated.The obtained products were characterized by Nitrogen…
Chemical composition, surface morphology and melting crystallization characteristics of basalt mineral samples from Heilongjiang Jixi(sample A) and Liaoning Fuxin(sample B) were studied respectively by using X-ray diffraction(XRD), X-ray fluorescence(XRF), scanning electron microscopy(SEM) and thermo gravimetric-diffe…
For the simplification of anti-explosion design and evaluation processes of buildings,it is significant to calculate the equivalent dynamic loading for the buildings subjected to internal explosion.By means of hydrodynamic analysis method,the characteristics and distribution of the over-pressure on the surface of the…
How to treat low-level radioactive waste(LLRW) safely and effectively has become a world-wide issue,since the traditional cement solidification technology possesses serious disadvantages,such as increasing the volume and weight of LLRW.Thus,we treated simulative organic low-level radioactive wastes(LLRW) by DC arc pla…
A cold rolling deformation resistance and friction coefficient calculation model were established and then applied to the Bland-Ford-Hill rolling force model.At the same time,the deformation resistance and friction coefficient calculation model parameters optimization method were discussed,by using the least square me…
On the utilization problem of magnesium slag in Ningxia,on the basis of existing research,taking magnesium slag digestion time,magnesium slag replacement ratio and fly ash content as factors,the effect law of magnesium slag to replace part of the fine aggregate on the compressive strength of concrete was studied throu…
Nanometer silicon dioxide features small particle size and large surface area and special properties unique to it like small size effect,surface and interface effect and quantum size effect,Due to its strong ultraviolet and infrared reflective characteristics,it can effectively improve the service performance of coati…
Modification of C3S and impact properties of cement clinker by addition of SO3 into high MgO content were investigated.Modification of C3 S in clinker was characterized with XRD.Paste compressive strength and combined water were measured.Results showed: 1% and 2% addition of SO3 had no negative impact on the formation…
As a new kind of nanometer energetic materials,the research progresses of nanoporous silicon and nanoporous silicon-based composite energetic materials were reviewed.From the comparative analysis,it was found that this kind of composite energetic materials has advantages of high reaction activity,controllable energy m…
The international thermonuclear experimental reactor(ITER), currently under construction in Cadarache of France, and its project were introduced. Seven members' purposes of participation in the ITER project and their fusion development strategies focusing on the ITER project were analyzed.
The copper anode slime is a by-product of copper electrolytic refining,which is an important raw material for the recovery of precious metals.In this paper the pretreatment of copper anode slime by sulfurizing roasting—leaching process was studied.Different conditions,such as acid-slime ratio,roasting temperature and…
Multi-channel data acquisition instrument of pressured solidification process was designed.The solidification process,change of temperature field and cooling velocity of RDX/TNT 60/40 and Ba(NO3)2/microcrystalline wax 60/40 were studied under adscititious pressure and atmospheric pressure respectively.The freezing poi…
The Al/MoO3 and Al/Fe2O3 nano-energetic films were produced by magnetron sputtering technology.The morphology,size,phase structure,XPS spectrum and thermodynamics of nano-energetic films were characterized by SEM,AFM,XRD,XPS and differential scanning calorimetry(DSC).The results showed that the surfaces of the as-obta…
The study on the preparation of a series of silicon carbide nanomaterials,including 1D nanowires,nanobelts,nanorods,2D nanosheets,hollow spheres,and so on,via solvothermal technique is summarized in this article.Meanwhile,SiC@C composite materials can be produced in the case of excess carbon sources.Silicon carbide na…
Based on the uniaxial compressive test,the variation laws of longitudinal wave velocity,failure modes,compressive strength and damage property of marble specimens while experiencing different temperatures among 25~1 000 ℃ were studied in this paper.The test results show that there are multiple splitting surfaces along…
In order to obtain the thermal physical parameters of nitrocellulose(nitrogen content 11.89% ~ 13.5%) to make the thermal analysis calculations and reveal the reaction dynamics mechanism,laser flash method and differential scanning calorimetric(DSC) method were used to measure the thermal physical parameters of nitroc…
The effect of the surface integrity on the bending fatigue life of 34CrNiMo6 high-strength steel is investigated using a specimen finished under various cutting conditions through fatigue test.The results show that the effect of residual stress on fatigue life is more pronounced than the effect of surface roughness an…
Weight is one of the most important performances for the aviation productions.The most effective approach to weight saving is developing the lower density material.The advanced Al-Li(Aluminum-Lithium) alloy with lower density,higher tensile strength,better damage tolerance etc is introduced.Compared with conventional…
The effect of cations(Na+,Ca2+)on the storage stability of anionic emulsified asphalt were studied by adding electrolytes of NaCl and CaCl2to anionic emulsified asphalt.Zeta potential,particle size distribution and microstructure of anionic emulsified asphalt with or without electrolyte added were determined to analyz…