Materials Literature
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The thermal dehydration of phosphogypsum has been studied by using thermogravimetry and differential scanning calorimetry techniques.A Netzsch STA 409PC simultaneous TG/DSC instrument was used to collect thermogravimetric and calorimetric data.Experiments were carried out at four different heating rates of 2.5,5.0,10…
Composite material was prepared by waste polyester /cotton(65/35)blend fibers as reinforcing material and PLA particles as composite matrix material,and orthogonal experiment and single factor experiment were used to optimize the molding process.The results showed that the optimal process conditions were polyester/cot…
The effects of heat treatment system on microstructure and properties of TC11 titanium alloy were investigated.The results showed that with rising of temperature at air cooling condition,β phase volume of TC11titanium alloy increase,fraction of α phase decreases while the volume increase.When the temperature exceeds 1…
Superhydrophobic film of hexadecyl trimethoxy silane(HDTMS) was fabricated on the surface of aluminum alloy by self-assembly.The morphology,chemical structure and corrosion resistance of the film were analyzed.It was found that the self-assembled silane film had superhydrophobicity(contact angle: 158°).The silane film…
As the continuous development of transmission system requires for higher voltage level,many research institutes have been trying to develop high voltage High Temperature Superconducting(HTS) cable system,which require reliable insulation characteristics and optimum insulation design skills.According to the structural…
Aim To explore the effect of lentinan on T cells in intestinal PPs of immunosuppressive mice induced by cyclophosphamide.Methods After oral administration of lentinan,immune effect of lentinan on the whole immunity was investigated through weight and thymus index,lymphocyte proliferation of spleen lymphocytes and dela…
Direct tensile experiments of rock-like materials with surface crack have been carried out.And the influences of the inclination angle of the surface crack on the peak strength and fracture process have been analyzed.Because the inclined surface cracks are under the mixed mode I,II,III loading conditions,in order to s…
A uniform anatase TiO2 layer was dip-coated on porous NiTi alloy via the sol-gel route,and a bilayer composite TiO2 coating consisting of the porous outer layer and the dense layer beneath was also deposited on porous NiTi alloy by adding polyethyleneglycol(PEG) in sol as pore-forming agent.The surface morphology of t…
In order to study the characteristic of the formation and penetrating steel target of the wide angle shaped charge,jet formation by wide angle shaped charge and penetration into steel targets were numerically simulated by the software of AUTODYN.The result of numerical simulation shows that large cone shaped charge je…
The TiB2 coating on the surface of graphite is prepared by CVD method in TiCl4-BCl3-H2-Ar system.The influences of CVD process parameters,such as deposition temperature,gas flux,residence time,on the phase composition,crystallization size,deposition rate and surface growth morphology of TiB2 coating are studied.The ex…
Influences from rapid solidification on the structure and property of the Fe-Mn-Si based shape memory alloy were studied in this paper.The results showed that because rapid solidification refined structure considerably,which resulted in the alloy yield strength enhanceing.At the same time,many α′ martensite were produ…
The synthesis of Na-β-Al2O3 solid electrolyte powders with high purity was carried out by sintering the mixture of Na2CO3/MgO and precursors which was obtained from calcining boehmite.The synthesis process was optimized by varying the boemite calcine temperature,calcine time and the high-temperature sintering process.…
Six kinds of absorbent were selected to compare their properties of adsorption for silicone in concentrated hydrochloric acid.The optimal absorbing material was decided.The results of the static and dynamic adsorption experiments show that strong-acid poly-styrene type cation exchange resin possesses higher adsorption…
The measurement method of the surface transfer impedance of shielded cables in time domain is proposed.The measurement system consists of high voltage pulse source,triaxial device,impedance matching network and digital oscolloscope.It can measure the coupled voltage or current of shielded cables.Comparison results sho…
In view of the problem of paper’s strength decreasing seriously when adding large amount of PCC,precipitated calcium carbonate (PCC) was modified by starch and stearic acid with the complex formed on its surface.The preparation and the effects of the modified PCC on paper performance were studied.The results show that…
Epoxy based coatings have been widely applied to marine and heavy corrosion protection coatings due to their high anticorrosive and mechanical performance.In this applications,as primers,epoxy coatings are often applied to various metallic substrates.Depending on the different surface treatment and construction condit…
Quantitative metallography technique was used to investigate the effects of hot isostatic pressing(HIP) treatment parameters on microstructure of ZTC4 casting titanium alloy.The results show that the β grain size and α lamella thickness of ZTC4 increase obviously after HIP treatment relative to as-cast microstructure…
The progress of the porosity,wettability,mechanical strength,thermally dimensional stability,shutdown as well as meltdown temperature of separator towards Li-ion battery is summarized.The results suggest that the wettability can be improved by grafting functional groups or adding hydrophilic oxides.Using polymer mixtu…
Slow crack growth(SCG)of polyethylene pipe was briefly reviewed,and various corresponding evaluation test methods of SCG were presented.SCG requirements of polyethylene pipes for water and gas using in GB standard and ISO standard were reviewed and their differences were also analyzed.In addition,differences of SCG re…
Highly ordered amino-functionalized mesoporous silica thin films(MTFs) were directly synthesized by co-condensation of tetraethoxysilane(TEOS) and 3-aminopropyltriethoxysilane(APTES) in the presence of P123(EO20PO70EO20).According to the neutralization-reaction mechanism followed by a reduction procedure of hydrogen-a…