Materials Literature
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Amorphous TiO2 thin films were prepared by plasma-enhanced chemical vapour deposition (PE-CVD) on glass substrates at room temperature, TTIP (Ti(OC3H7)4) was used as a precursor compound, and carried into reactor by O2. Pulsed bias was used as assistant for deposition of TiO2, and a comparative between plasma with pul…
Aimed to the tube shape for multi-stand stretch reducing rolling unit of seamless tube,the stretch reducing process was divided into rolling deformation in the stand and remeshing among the stands.The group finite element model of tube shape prediction has been established to simulate this process by means of 3-D ther…
The microstructure and properties of nano-structured Al2O3 / TiO2 ceramic coatings prepared by plasma sprayed on 6063 alloy surface were investigated by means of XRD, SEM, micro-hardness tester and frictional wear testing machine. The results show that both α-Al2O3 and γ-Al2O3 phases are observed. Higher sprayed power…
The furnace brazing of 101 aluminium alloy reinforced with SiC particles protected by argon gas was studied in this paper. Results show that maximum value 90 MPa of brazed joint shearing strength can be attained by optimizing brazing technology parameters. Metallographic observation and XRD phase analysis demonstrate…
In order to obtain a molecular-targeting photosensitizer mediated by folate receptor,5-p-(4-aminobutoxyphenyl)-10,15,20-tri-p-methoxyphenylporphyrin was synthesized with a four-step procedure starting from p-hydroxybenzaldehyde,p-methoxybenzaldehyde and pyrrole,then,a novel folate-porphyrin compound was prepared throu…
In order to achieve the antibacterial property of silk fabric,a solution which was mixed by multi-amidine compound(RSD) and silver nitrate was used to deal with the silk fabric,and the Nano-silver antibacterial silk was obtained by steam method in the light of in-situ mechanism.Subsequently,Nano-silver antibacterial s…
Cold ring rolling process is an advanced continuous local metal forming technology and is extensively used for the precision forming of profiled rings.Based on the numerical simulating investigation of the T-shaped section ring cold rolling process,the evolving characters of the stress and strain of ring are analyzed…
Magnetic flux leakage techinique had been widely used for non-intrusively testing of steel products.The principle of pulsed magnetic flux leakage testing(PMFL) was analyzed.A pulsed alternating current magneting method was presented.The finite element numerical simulation had been used to simulate and calculate the ef…
In order to meet the needs of the design of transit platform's panel in double trolley quayside container crane,taking the limit intensity as a starting point,applying the plasticity theory into the design of transit platform's panel in double trolley quayside container crane,a reasonable plasticity design is set up c…
A (Bi0.5Na0.5)TiO3-based lead-free piezoelectric ceramic, (1-x-y)Bi0.5Na0.5TiO3-xBi0.5K0.5TiO3-yBiCrO3 (BNT-BKT-BC-x/y), was prepared by a conventional ceramic sintering technique. Its crystal structure, and piezoelectric properties and depolarization temperature were investigated. The morphotropic phase boundary (MPB…
Molecule structure of aminosulfonic-based superplasticizer was analysized.Its action mechanism,chemical synthesis and the relationship between molecule structure and performance were particularly discussed.Recent research progress and current situation in domestic aminosulfonic-based superplasticizer were reviewed.
[Objective] The epoxidization reaction conditions of rapeseed oil plasticizer were discussed by using carrier reagent as catalyst.[Method] The optimum reaction conditions were determined by the orthogonal experiment.[Result] The optimum conditions were as follows: the dose of carrier catalyst was 6% of rapeseed oil.Th…
Indium-doped zinc oxide nanospirals were synthesized on silicon substrates by chemical vapor deposition.The morphologies and structures of the samples were characterized by X-ray diffraction,scanning electron microscopy,and high resolution transmission electron microscopy.The nanometer materials was formed by the whir…
Compared with conventional lines,the compact power transmission line has the characteristics of improving the delivery of natural power,cutting the width of corridor,and reducing the construction cost.Through the simulation experiments,flashover voltage on straight tower of 750kV single circuit compact line within win…
Iron-sulfur proteins are among the most common and ancient enzymes and electron-transfer agents in nature. They play key roles in photosynthesis, respiration, and the metabolism of small molecules such as H2, CO, and N2. The Iron Sulfur Enzyme Gordon Research Conference evolved from an earlier GRC on Nitrogen Fixation…
The structure, synthesis method, formation mechanism, and potential applications of carbon nanofibers in many fields, such as composites, electronic device and catalyst, were mainly introduced.
Based on the global reaction model of silane thermal decomposition,the computational fluid dynamics code FLUENT is adopted to simulate the heat transfer,mass transfer and the thermal chemical process that happened in a traditional silane decomposer.The results quantitatively express the individual process in the decom…
Waterborne polyurethane emulsion modified by epoxy resin is synthesized with isophorone diisocyanate (IPDI), polydiol (PPG), epoxy resin (EP) as main raw materials. The effects of molecular weight and introducing amount of epoxy resin on properties of emulsion and coating film are investigated. The coating film struct…
Lake Suganhu is a closed inland ecosystem situated in the northern of Chadm Basin,the largest plateau inland lake in Gansu Province,China.It is an important habitat for transient birds and other animals.There are two lakes called Lake Suganhu,ie big and small one,which are over 110km2 totally.Most of water is originat…
Based on stochastic trajectory model and Mundo deposition model,the 3-D two-phase flow field in solid rocket ramjet was numerically simulated.The influences of the inlet angle,the burner exit configuration,particle size distribution at particle boundary and condensing fraction of Al2O3 on the deposition were discussed…