Materials Literature
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00Cr22Ni5Mo3N is a kind of duplex stainless steel produced in China and is used in chemical equipment manufacturing more and more.Based on the analysis of the reasons for the decrease of corrosion resistance of tube's main seam after welding,an optimized welding process of the material was summarized and developed,whi…
The adsorption behavior of lysozyme(LYZ) on SBA-15 mesoporous silica with different pore diameters and specific surface areas was investigated.Adsorption capacities of LYZ were controlled by the specific surface area,and the relationship between the adsorption and the special surface area is q=0.602 53SBET-130.58.Adso…
The silk fibroin(SF)/CaSiO3(CS) composite nanofiber was fabricated via electrospinning.XRD and FT-IR analysis showed that Silk II governed the structure of the SF/CS composite nanofiber.It has a diameter of 200-400 nm and porosity of about 78%.Water contact angle experiment indicated that it has better hydrophilicity…
A single pass(Φ=120°) equal channel angular pressing(ECAP) at room temperature was successfully carried out on commercially pure(CP) Ti with a wide range of extrusion speed.The microstructures of the as-received and ECAPed samples were analyzed by using optical microscopy(OM).The experimental results show that twinnin…
ZnO varistor ceramics are widely used in the field of instruments equipment and electrical installations because of their excellent non-linear characteristics.In order to achieve the electronic components for low-voltage,miniaturization and integration,it is necessary to develop ZnO varistor ceramics with low sinterin…
A series of imidazoliums(Cl and PF6)were prepared and applied to the melt grafting of polypropylene with acrylic acid.The effects of the type of anion and the number of alkyl carbon on the grafting degree and side reaction were studied.The results indicated that the PF6 could increase the grafting degree greatly and t…
Microstructure,micro-hardness and composition of W-Mo-Y co-diffusion alloying layer formed on surface of carbon steel by using glow plasma surface alloying technique were studied.The diffusion coefficients of W and Mo atoms at different position and concentration in the layer were calculated by Fick's second law.The r…
A series of benzimidazole derivatives R2-bzim(R=H-,CH3-,C6H5CH2-;bzim=benzimidazole) templated 1-D PbI3 -based inorganic-organic hybrids have been synthesized by an in situ N-alkylation solvothermal method.The 1D PbI3 -chains in these compounds change from a double-chain to a single-chain structure with the increase o…
The synthetic methods of titanium dioxide(TiO2) nanotube arrays(TNTAs) such as template method and anodic oxidation method were summarized,the effects of TNTAs'structure and modification on the electro chemical performance of the electrode were reviewed.The research directions of TNTAs used as three-dimensional anode…
Using a gas-solid two-phase model(a discrete phase model),the authors investigated the flow field inside the multi-channel nozzle for surface nano-crystallization(SNC) induced by ultrasonic particulate peening(USPP).By computation,the velocity fields of both the gas and the solid phases were simulated and the track of…
In this paper,Ti∶Al2O3 nano-powders were prepared by the co-precipitation method for the first time.The nano-powders were characterized by TG/DTA,FTIR,XRD,TEM and EDS techniques.The results indicate that the pure α-Al2O3 phase can be obtained when the precursors were calcined at 1 200 ℃ for 1 h.The powders were 25~50…
Under different conditions,HDPE films containing known amounts of ultraviolet absorbers were soaked in 4 food simulants of water,10%(V/V)ethanol solution,3 g/L acetic acid solution and olive oil.At certain time,the soaking solution was analyzed by ultra performance liquid chromatography.The purpose was to study the re…
Silicon-supported cobalt-boron(CoB/SiO2) and cobalt-boron(CoB) nano-sized catalysts were synthesized via chemical deposition method.Their catalytic behavior in the thermal decomposition of ammonium perchlorate(AP) was briefly studied by thermo-gravimetric and differential thermal analysis(TG-DTA).Results show that bot…
Friction and wear properties of unsaturated polyester resin(UPR) composites filled with nano-SiO_2,sliding against 45 carbon steel under dry friction condition were studied,and the worn mechanism of the UPR composites were discussed The results show that the wear resistance of composites which UPR is changed by differ…
The chamfering process of heavy forging on 120° V-shape anvil and trapezoid anvil was simulated by FEM software.The distribution of strain,stress and the deformation law in the plastically deforming area were analyzed.The results indicate that,compared with 120° V-shape anvil,adopting trapezoid anvil chamfering can in…
Introduce the principles of CO purifying methods,which include complex absorption,direct oxidation absorption and catalytic oxidation absorption.The production process,advantage and disadvantage,and utilizing characteristics were discussed.The research can guide the development,choice and application of CO purifying m…
When preparing high purity magnesium oxide from the method of magnesium chloride-lime milk,we have a high requirements for the content of CO2,HCO-3,CO2-3 in the process water.Whether can we reduce the content of CO2,HCO-3,CO2-3,is the key of controlling the CaO content in product;is also the key of ensuring MgO conten…
In order to improve and enhance the mechanical and wear-resistant properties of high-aluminum zinc foundry alloy (ZA43), the RE metal-cerium was used in modification of ZA43 alloy.The paper had researched and discussed the influences of RE on mechanical properties and wear-resistant properties of ZA43 systematically.…
In this paper,dopamine is used to modify the surface of 304 stainless steels.TiO2,SiO2 and TiO2/SiO2 based hybrid membranes are prepared by sol-gel process and self-assambly method.The film forming properties of tetrabutyl titanate,tetraethoxysilane and 11-mercaptoundecanoic acid(MUA) and anti-corrosion property of th…
Ce-doped Y3Al5O12 (YAG:Ce) phosphors were synthesized by impinging stream co-precipitation-molten salt baking and direct co-precipitation-molten salt baking methods. Powder structure, morphology, and photoluminescence were characterized by X-ray diffraction, thermogravimetric-differential analysis, scanning electron m…