High current pulsed electron beam
Web22 de nov. de 2024 · Commercial TiAlN-coated carbide tools were post-treated using the high current pulsed electron beam irradiation method. The influence of the energy … Web15 de nov. de 2024 · Recently, high-current pulsed electron beam (HCPEB) irradiation has been proposed as an innovative non-equilibrium surface modification technology, …
High current pulsed electron beam
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Web14 de abr. de 2024 · Optical drive. A VSe 2 nanosheet was attached on a horizontal polished sapphire substrate via mechanical exfoliation (ME) method, and it was … Web30 de nov. de 2024 · The “HOPE-I” type high-current pulsed electron beam (HCPEB) equipment was used to irradiate the pure aluminum material with Zr coating preset by ball milling to realize the alloying of a Zr–Al coating surface. The microstructure and phase analysis were conducted by XRD, SEM, and TEM. The experimental results show that …
WebLimits of the electron beam density in the focus are eval-uated. As it shown, the maximal beam density is achiev-able in the relativistic vacuum diode with the needle anode. In such a device, the initial emittance of a beam is rather small. The electron beam gains emittance while being fo-cused with positive ions into the anode due to collisions Web27 de abr. de 2004 · Physical models and numerical simulations are used to describe the thermal-mechanical process induced by high current pulsed electron beam (energy E=10–40 keV, energy density in a pulse S=1–6 J/cm 2, pulse duration τ=0.5–5 μs) irradiation. The temperature simulation reveals ultrahigh heating and cooling rates on the …
Web1 de mar. de 2016 · A high-current electron beam is extracted from the plasma layer and is accelerated by the strong diode electric field. Further, an increase of the time interval … Web13 de mar. de 2024 · It is shown that the exposure of the AISI 310 to high-current pulsed electron beam results in a high-speed melting of the surface layer, creates the …
Web13 de abr. de 2024 · In O-type devices an electron beam drifts in the same direction as the applied magnetic field. Among them, the O-type slow-wave devices use the axial slow-wave structure to achieve electron beam clustering and beam interaction. Both beam-forming methods are based on the conversion of a circular electron beam from a conventional …
Web28 de mai. de 2024 · High-current pulsed electron beam sources are the core components of high-power microwave systems. In order to meet the requirements of future applications, one needs to improve the performance of electron beam sources in terms of vacuum insulation, beam transportation, and thermal management. In this paper, we … hideaway hills front gateWeb3 de nov. de 2024 · The high-current pulsed electron beam (HCPEB) is a new type of energy-carrying beam surface modification technology that has been developed in recent years [22,23,24]. An electron beam with high energy density can achieve a target heating rate as high as 10 9 K/s in a short pulse of microseconds. howe military school alumni associationWeb28 de mai. de 2024 · High-current pulsed electron beam sources are the core components of high-power microwave systems. In order to meet the requirements of … hideaway hills homes for sale ohioWeb1 de ago. de 2016 · In order to realize a uniform high current pulsed electron beam irradiation for a circular component, we designed an annular cathode for HCPEB … hideaway hills ohWebMicrostructures of CuCr25 and CuCr50 alloys treated by high current pulsed electron beam (HCPEB) were investigated in this work. The microstructure and solidification behavior of the Cr-rich phases were characterized by scanning electron microscopy (SEM). Results show that a remelting layer of 3~5 μm is formed on the surface of Cu-Cr alloys. hide a way hills ohio deathsWebNumerical simulation and experimental evidence for surface modification by high current pulsed electron beam. Hits: First Author ... Oxidation resistance of a hot-die steel (H13) … hideaway hills golf course reviewsWeb8 de out. de 2003 · We study in this article the formation mechanism of craters on a metal surface during the high current pulsed electron beam processing. Based on experimental investigations and a physical model, the melting process and their temperature profiles are simulated for substrates of aluminum and steels. Initial melting positions, crater depths, … howe military school alumni