Materials Literature
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The co-corrosion mechanism of oil and gases such as dissolved oxygen,carbon dioxide,hydrogen sulfide as well as carbon dioxide and hydrogen sulfide in the pipeline was described. The anti-corrosion technology of oil and gas in pipeline was reviewed,including selection of corrosion resistant metallic materials or non-m…
In this paper a typical commercial granular activated carbon which is fully SO2 adsorbed is regenerated by microwave heating under ambient atmosphere condition and nitrogen gas atmosphere condition,respectively.A series of thermal images of the sample are captured during the microwave heating with infrared thermograph…
Nano-indentation and scanning electron microscopy(SEM) were used to reveal the intrinsic microscopic properties of concrete and deterioration mechanism of concrete due to cyclic freezing/thawing(F/T) damage. Characterization results on the 0 F/T cycle mortar indicates that, the hardness and indentation modulus are hig…
The experiment of laser remelting on the surface of centrifugally cast tin-base babbitt alloy was made. The microstructure and hardness of laser remelting layer were studied. By laser remelting, the casting defects, such as coarse chemical compound, segregation and gas cavity can be removed. The microstructure of lase…
Objective To study the correlation of the content of periplocin with acute toxicity of Cortex Periplocae in different places. Methods The content determination of periplocin and 4-methoxy salicylic aldehyde in Cortex Periplocae was carried out by HPLC simultaneously. Mice were respectively orally administered with 32…
In order to investigate the internal cavitating flow characteristics of residual heat removal pumps during the small break loss of coolant accident( SBLOCA),the three-dimensional cavitating flow under high temperature and high pressure within the whole flow passages of a residual heat removal pump was simulated using…
In order to solve the weak oxidation resistance of carbonyl iron powder at higher temperature, carbonyl iron powders with core-shell coated Zn O were prepared using hydrothermal method and then the composites were fabricated by mixing the absorbent in the paraffin matrix. The results show that the carbonyl iron powder…
As a reinforcement,graphene has received more and more attentions in the preparation of the lightweight,high-strength and high-toughness alloy materials due to its unique electrical,mechanical and thermal properties.A brief introduction about preparations and properties of graphene,an overview on preparation methods,p…
A set of hot compression experiment 6061 aluminum alloy was carried out on the Gleeble-3500thermal-mechanical test system.The true stress-true stain curves were obtained in the condition of temperatures 350℃,400℃,430℃,460℃,480℃and 500℃,strain rate 0.001s-1,0.01s-1,0.1s-1,1s-1 and 10s-1.By using the obtained experiment…
To understand the effects of the rifle bullet parameters on the bullet鄄gelatin interaction quantitatively, a finite element model of bullet penetrating gelatin was set up and computational re鄄 sults are compared with experimental ones. The penetration of the rifle bullet into the gelatin was simulated by the nonlinear…
Effect of different shot blast process on descaling capacity and surface roughness of SUS430 hot-rolled coil which was annealed in hood-type annealing furnace was studied by adopting simulated experimental method. The experiment showed that the abrasive type,abrasive flow and shot blasting velocity have dramatic effec…
Selective laser melting(SLM),a kind of layer by layer processing technology,has significant performance advantages on preparation of porous materials.SLM provides an effective method to reduce the elastic modulus and the stress shielding effect of TC4 titanium alloys for medical implants.However,there is still no conv…
The heat of combustion,combustion performance and thermal decomposition characteristics of AP/CMDB propellants containing Al powder with different granularity and content were researched by using calorimeter,burning rate measurement and PDSC,respectively.The results indicate that the heat of detonation is proportional…
Modern pipeline steel is a kind of low-carbon and micro-alloy steel which makes use of controlled rolling controlled cooling process technology. Due to low carbon and multi micro-alloy design and the variety of the parameters such as temperature,deformation and cooling speed during the process of controlled rolling an…
Nano-Fe3O4 powder materials were prepared by using chemical co-precipitation method.The structure and properties of nano-Fe3O4 powder with citrate and without citrate were characterized and analyzed by solution adsorption,transmission electron microscopy,X-ray diffraction and Gouy magnetic balance method.The results r…
Engineering ceramics has been used on a broad range of industry sectors such as aerospace,weapon,petroleum with high hardness,high strength,high temperature resistance,superior wear resistance,excellent comprehensive properties. The present situation and development of all kinds of special machining technology of engi…
The aim of this paper is to investigate the influence of water environment on dynamic mechanical properties of geopolymer concrete( GC). Dynamic compressive tests on dry and wet GC specimens were conducted by a split Hopkinson pressure bar system. The results indicate that the dynamic strength and impact toughness of…
Black rice bran anthocyanin liposomes were prepared by reverse phase evaporation combining with p H-gradient technique using the mixture of soybean lecithin and cholesterol as membrane material. On the basis of the single-factor test,the molar ratio between phosphatidylcholine and cholesterol(nSPC/nCH,mol/mol),volume…
In this paper,the effect of lead ion on the hydration of compound phosphate based magnesium phosphate cement and its leaching properties was studied.The results show that the compressive strength of compound phosphate based magnesium phosphate cement decrease with the increase of lead ion content.High content of lead…
External loading may induce internal stress in components of solid wood furniture. The pattern and value of the stress are different between components and their nodes. In this study,solid wood furniture components are classified as supporting and connective ones,and mechanical analyses were performed on them. The res…