Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The B610CF steel weld joints between using shielded metal arc welding method and mixed gas arc welding method in three welding parameters were investigated.Metallographic experiments and mechanical property experiments were carried out on the weld joints.The experimental results show that the tensile strength and impa…
Objective To label rabbit bone marrow stem cells(BMSCs) with superparmagnetic iron oxide nanoparticles(SPIO) as a magnetic probe and to explore the effects of magnetic cell labeling with various concentrations of SPIO on cellular biological characteristics,and MR signals in vitro.Methods BMSCs were labeled by SPIOs wi…
Two network-based butadiene rubber(BR)/bisphenol A type epoxy resin was prepared by mechanical blending.Mutual effects between epoxy resin curing and rubber vulcanization were studied;the effects of the E-44 loading on the structure and mechanical properties of BR/E-44 composites were also evaluated.The experimental r…
The differences between unpolarized and polarized light method for determination of cellulose fibre morphology were compared,the principle and characteristics of the methods were discussed.Certain materials,such as cellulose fibres,have a crystalline structure that results in the refractive index varying with the dire…
Polycrystalline silicon thin film is a high quality material for micro-electronic components,thin film transistors and large flat-panel LCD displays because of its high electrical mobility and stable photoelectric properties.Moreover,it has been regarded as a candidate material for making high efficiency,lower energy…
To understand the chemical properties of lotus fiber could provide theoretical basis for developing lotus fiber fabric.Through analyzing and comparing the dissolution,colour and tensile properties change at different concentration,different temperatures of the chemical reagents,the chemical properties of lotus fiber w…
To understand the experimental observation that the dynamic parameters determined for enthalpy and dielectric relaxation might differ in fragile glass-forming molecular liquids,a fragile molecular liquid,triacetin,was chosen for the study of the two relaxation dynamics.The non-Arrhenius and nonexponential characters w…
The pilot test study of suspension ACR-g-VC resin was introduced.The industrialization production in 13.5 m3 polymerizer was performed based on the results of pilot test.The problems and the corresponding solutions in the industrialization process were introduced in detail.
To study the nonlinearity of the transmission characteristics of the PWM controller effectted by the capacitance coupling,the time domain response of the PC coupling under the triangular wave signal driving was obtained by quantitative theoretical analysis.Besides,the influence of coupling parameters on the transmissi…
β-chitin extracted from squid pens,different from the α-type in the crystal structure.The β-chitin showed better solubility thanα-type in LiCl/N-methyl pyrrolidone system and NaOH/urea system.Compared the rheological curve of different concentrations of LiCl/N-methyl pyrrolidone system,the β-chitin of LiCl/N-methyl py…
The classification and development tendency of various flame retardants were briefly described.The fire-retardant mechanisms of aluminum-magnesium flame retardants,char forming or char accelerating flame retardants,platinum flame retardants,and nano flame-retardant system and their applications in the silicone rubber…
Based on the theories of interface mechanics and composites mechanics,it creates the mechanics model for shear strength of interface and spring mechanics model for failure process at fiber-matrix interface.The theory for stress fields and displacement fields at fiber-matrix interface of carbon/carbon composites and th…
Nanoscale TiO2-WO3 composite coating and TiO2/WO3 laminated coating were prepared on the surface of 304 stainless steel using sol-gel method as well as dipping and drawing method.The morphology and composition of the two kinds of ceramic coatings were analyzed by means of scanning electron microscopy and X-ray diffrac…
By orthogonal test,the effects of double quenching and tempering on the microstructure and properties of GCr15 steel were studied.The optimum process for obtaining the higher hardness and higher impact toughness was determined.The optimum process is quenched at 900℃ for 10min and then quenched at 850℃ and then tempere…
The surface of copper powers was plated with silver.The silver-coated copper power was characterized and its performances were tested by XRD,DLS and TG.The influence factors of conductivity,antioxidativity and its particle size were analyzed.The results show that silver-coated copper powders are prepared by liquid che…
Using the Dirac-Weyl model,we present the magnetic-field dependence of low-lying spectra of two-dimensional graphene-based magnetic dot and ring,including both spinor components,creating from perpendicular inhomogeneous magnetic fields.Numerical results obtained from direct diagonalization show that,under inhomogeneou…
ZrO2 films and YSZ films were prepared by DC magnetron sputtering at the deposition temperature of 25 ℃ and 300 ℃,respectively.The results show that the effect of deposition temperature at film growth rate of ZrO2 films is unobvious,while this effect is obvious for YSZ films.Compared with YSZ films,it is more easier f…
The oxygen-enriched combustion of gasoline engine was achieved when the intake air O2 content was provided for 21%,23% and 25% oxygenated air respectively.The combustion characteristics of in-cylinder pressure,instantaneous heat release rate,cycle-to-cycle variation and the emission characteristics of THC,CO and NOx o…
Vanadium doped Mg1.03–0.5xMn0.97–xVxSiO4 (x = 0, 0.034, 0.069 and 0.134) materials were synthesized by a high temperature solid-state method. The crystal structure and morphology were characterized by XRD and SEM measurements and the results demonstrated that V ion dopant does not affect the structure of Mg1.03Mn0.97S…
Using mullite-fiber as reniforcement,the mullite-fiber-reniforced porous glass matrix composites were prepared by solid-phase sintering.The effect of sintering temperature and holding time on the microstructure and properties of mullite-fiber-reniforced porous glass matrix composites were researched in detail.The stru…