In order to develop nuclear fusion energy,many countries are active in the study of magnetic confinement fusion in ***-2M Tokamak is a conventional and medium-sized Tokamak which adopt the demountable toroidal field c...
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In order to develop nuclear fusion energy,many countries are active in the study of magnetic confinement fusion in ***-2M Tokamak is a conventional and medium-sized Tokamak which adopt the demountable toroidal field coils（TFC） structure in order to assemble the vacuum vessel chamber and poloidal field coil（PFC） integrally. The TFC is designed for a maximum field of 3T at R = 1.78 m and consists of 20 bundles （140 turns） of copper alloy plate with a maximum current of 195 *** normal operation,the current is 140kA and the field is 2.2T. Base on the electromagnetic,thermal and structure analysis,we have to make large size（55mm1800mm5600mm） copper alloy plate with high fatigue stress and high *** nominal chemical composition of the copper alloy plate:copper and silver > 99.75%;silver.0.09-0.15%;phosphorus:0.001-0.01%;magnesium:0.03- 0.14%.We consider two trial-manufacturing method:one is the semi-continuous casting-hot roll-cold roll-annealing process,another is vacuum melting- vacuum casting-hot forging-cold forging-heat *** coupled plasma emission spectrometer,Rockwell hardness tester,electronic tensile testing machine,PQS - 60 type pure bending fatigue testing machine and tension-compression fatigue testing machine were used to chemical analysis,conductivity analysis and mechanical properties analysis. After several trail-manufacturing,the first method result is:electrical conductivity≥80%IACS;hardness≥85HRF;tensile strength≥305MPa;elongation≥20%;bending fatigue strength≥150MPa（10～6 circles）;tension-compression fatigue strength≥200Mpa （10～6 circles）.The second method result is:electrical conductivity≥86%IACS;hardness≥90HRF;tensile strength≥320MPa;elongation > 10%;grain size 0.04～0.06 mm. Because the cold working rate of the cold forging is more than the cold roll,the tensile strength is higher.
In recent years,atmosphere-pressure cold plasmas were becoming increasingly important in biomaterial and industrial applications such as surface treatment, semiconductor fabrication,thin film deposition,food processin...
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In recent years,atmosphere-pressure cold plasmas were becoming increasingly important in biomaterial and industrial applications such as surface treatment, semiconductor fabrication,thin film deposition,food processing and disinfection for its low surface temperature without complicated vacuum chamber ***,various
Nanostructured TiO has attract much attention for its wide application scopes of inanticancer or gene therapy modalities,bio-compatible fluorescent labels,photocatalysts,photo/electrochromic devices,photonics crystals...
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Nanostructured TiO has attract much attention for its wide application scopes of inanticancer or gene therapy modalities,bio-compatible fluorescent labels,photocatalysts,photo/electrochromic devices,photonics crystals,spintronic devices,gas sensors and chemical degradation *** reactive anatase TiO with large exposed {001} facets and 3D architecture is of great recent interest for these new energy,environment,medicine related fields.
The effect of Cl inductively coupled plasma（ICP） treatment on the time dependence of work function and chemical composition of indium-tin-oxide（ITO） surface were *** probe（KP） measurements show that the work fun...
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The effect of Cl inductively coupled plasma（ICP） treatment on the time dependence of work function and chemical composition of indium-tin-oxide（ITO） surface were *** probe（KP） measurements show that the work function after Cl plasma treatment is close to 5.9eV and begins to drop rapidly in the first two hours and decreases slowly two hours *** find the ITO work function by Cl plasma treatment is about 0.3eV higher than that without treatment after 4 months and the time dependence by Cl plasma treatment is better than that by O plasma *** the ITO in a N2-filled glovebox after O or Cl plasma treatment can slow down the decreasing rate of work function but can hardly influence the decreasing rate of the first two *** results are significant for the understanding and stability of the time dependence of plasma-treated ITO work function.
The velocity field and pressure field induced by Surface-Dielectric-Barrier-Discharge (SDBD) plasma actuators in quiescent air are measured based on Micro-PIV and transient differential pressure sensors.A macro lens m...
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The velocity field and pressure field induced by Surface-Dielectric-Barrier-Discharge (SDBD) plasma actuators in quiescent air are measured based on Micro-PIV and transient differential pressure sensors.A macro lens mounted on PIV system is used to capture the critical region of plasma-induced flow and observe the field of view(FOV) focusing on 20mm×*** transient differential pressure sensors are settled on a plexiglass board which is arranged vertically to the plasma actuator to detect the inconspicuous changes of pressure gradient in the induced *** order to study the contribution of the pressure,the measured velocity field and pressure field are regarded as the source terms and substituted into momentum equilibrium equations and Navier-Stokes equations to calculate the field of body *** body force calculated by neglecting the pressure term in the Navier-Stokes equations is also presented for comparing with that including the pressures.A parametric study on body force is conducted for various carrier frequencies,which can be used to optimize the electrical parameters of plasma actuation.
In this paper,tricobalt tetraoxide（CoO） film built with utra-small particles were deposited on the polydimethyl-siloxane（PDMS） surface by the plasma-enhanced metal-organic chemical vapor deposition technique（PEMO...
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In this paper,tricobalt tetraoxide（CoO） film built with utra-small particles were deposited on the polydimethyl-siloxane（PDMS） surface by the plasma-enhanced metal-organic chemical vapor deposition technique（PEMOCVD）.The crystal structure of CoO was achieved by post-treatment with argon（Ar） and oxygen（O） plasmas at room *** emission scanning electron microscopy（FESEM）,transmission electron microscropy（TEM）,X-ray diffraction（XRD） and X-ray photoelectron spectrometer（XPS） were used to investigate the structure characteristics of CoO *** results revealed that the interlayer of TiO inhibited effectively the migrations of atoms,especially silicon, from PDMS to the CoO *** the surface modification,the cobalt content in the catalyst film increased from 18.6%to 27%.Moreover,catkin-liked profiles were formed on the CoO surface,and they can increase the specific surface area of CoO catalyst. The average diameter of crystallized CoO particles was about 5 nm,and predominantly exposed their（311） and（220） ***,these structure characteristics of fabricated CoO may be very useful for the CO and hydrocarbon catalytic oxidation.
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