Materials Literature
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According to the resistance matching principle and electromagnetic spreading regulation,Polyurethane(PU) foam core sandwich absorbing composites were fabricated,the absorbing characteristics of the different structure matching in sandwich composites were discussed.The experiment showed that when the matching layer add…
Single phase La0.7Ca0.3MnO3(LCMO) powder was synthesized by a chemical solution deposition(CSD) method and the polycrystalline sample was prepared by pressureless sintering method.The magnetic moment properties,colossal magnetoresistance(CMR) effect and electric-pulse-induced switching of electrical resistance effect…
The interaction between carbon dots and lysozyme was studied with resonance light scattering technique.It was found that the negatively charged carbon dots could bind with positively charged lysozyme through electrostatic attraction,forming a large complex that has strong light scattering signals and is unlikely to be…
The characters,forming principle and conditions needed during the production of curved fabric are introduced in this paper.The warp-curved fabric is made by using V-shaped metal reed to move up and down in producing whilst the weft-curved fabric is dependent on each different shaped reed tooth and its gradually transi…
As one of the lightest engineering materials,magnesium alloy has extensive application prospect for its characteristics,such as high specific strength,good electromagnetic shielding property. However,poor corrosion resistance has been a problem to restrict its further development and application. At present,many kinds…
The anticorrosion titanium alloys Ti35,TA2,TA9,TA10 and TiNi were investigated in detail by the boiling dense nitric acid reflux corrosion.The microstructure and the composition change.The oxidizing layer that appears on the surface of the alloys was characterized using scanning electron microscopy(SEM) and energy dis…
Decolorization of brilliant red KE-3B wastewater by molecular sieve loaded with iron(Ⅲ) was investigated. The optimized experimental conditions were pH=4,[H2O2]=1 153 mg·L -1,80 ℃ and 50H catalyst 40 g·L -1 when the initial concentration of dye was 200 mg·L -1. Under such conditions,reaction rate constant,half-life,re…
A four parameter non-linear visco elastic model is put forward,which is consisted of the Maxwell element,linear spring and nonlinear spring.The tensile properties of three-dimensional crimp silk are tested and analyzed.The result shows that: theoretical expectations and experimental results can be consistent.
Using tri-block polymer,polyethylene glycol and methylcellulose as mixed templates,tetraethyl orthosilicate as material, inorganic salt K_2SO_4 as additive,macro-mesoporous and monodisperse SiO_2 microspheres were prepared by using liquid-liquid microdispersion technology.The silica microspheres were characterized by…
Cordierite honeycombed ceramic substrate was coated by the precursor sol of CaZr4P6O24 (CZP) prepared by sol-gel route.The CZP coating calcined at 700 ℃ for 2 h has low thermal expansion performance.The phase structure and pore structure of the CZP coating were characterized by X-ray diffraction and Brunauer-Emmett-Te…
In this paper synthesized nano-zeolite/Al2O3 composites were prepared with self-made nano-zeolite and alumina combined together by sol-gel method and have been done at nano-zeolite/Al2O3 composites experimental conditions(such as Al2O3 gel concentrationc、alcined temperaturet、he ratio of nano-zeolite to Al2O3 and so on…
Super-ductile and high strength manganese TWIP steels have received much attention in recent years.In the present work,two high Mn high Al steels with different stacking fault energies were investigated, microstructures were examined and mechanical properties were measured.The results showed that Fe-26Mn-6Al- 1C steel…
A new meso-microporous MCM-41-HY zeolite was prepared using HY zeolite as the mother liquor and characterized by XRD, NH3-TPD and N_2 adsorption-desorption. Hydrothermal stability of the zeolite was investigated. The results showed that MCM-41-HY zeolite exhibited the properties of both mesoporous MCM-41 and microporo…
A systematically theoretical research on Cu+—exchanged zeolite catalyst(Cu—ZSM—5) was performed. First of all, a whole geometric configuration includes integrated straight and sinusoidal channel of ZSM—5 model was building. Then a thorough examination was made of the effects of placing Cu+ in each of potential cation-…
Effect of aluminum on microstructure and mechanical properties of Cr8WMo2V2SiNb steel was investigated by metallographic examination and SEM.The results show that aluminum can refine as-cast microstructure,carbides and grain size.Aluminum also can increase critical point while improving the appearance of ferrite in qu…
Objective A novel strategy for unltra-sensitive detection of proteins based on both the multifunctional gold nanoparticle(Au NP) probes and the magnetic bead(MMP) was developed.Methods the multifunctional Au NP probes were labeled with both two kinds of proteins and thiol-terminated oligonucleotides strand:detection a…
The titanium-containing apatite coating(TCAC) with honeycomb-like structure was fabricated on single crystal silicon by a hybrid sol-gel approach including preparation of hybrid sol containing calcium,phosphorous and titanium,immersion and spin of specimens in hybrid sol,desiccation of hybrid sol,and calcination of hy…
Nano-sheet carbon films(NSCFs) were fabricated on Si wafer chips by means of quartz-tube-type microwave plasma chemical vapour deposition(MWPCVD).In order to further improve the field emission(FE) current density,a 2-nm Ti film was prepared on the samples by using electron beam(EB) evaporation.The FE characteristics o…
Projectile is a major component of artillery.Through research on projectile grain the smooth surface and ignited surface treatment mechanical system.Processing method of projectile grain is improved.Introduced the processing methods of the works of research on the surface of projectile grain treatment mechanical syste…
A kind of porous scaffolds of calcium alginate for tissue engineering, which can be assembled in nerve conduits, was made by the method of casting/freeze-drying. Through IR, SEM, the equilibrium swelling ratio of the porous scaffolds of sodium alginate in cross linkers of different consistencies, the mechanical proper…