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混粉电火花加工极间介质击穿机理的研究 被引量:3
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作者 索来春 赵万生 +1 位作者 梁力平 聂东 《电加工与模具》 2001年第5期10-13,共4页
在实验研究和理论分析的基础上 ,对混粉电火花加工过程中极间介质的击穿机理进行了研究 。
关键词 混粉电火花加工 介质击穿 镜面加工 表面质量
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真空灭弧室的绝缘和击穿
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作者 高劭鸿 厉雷 厉焕璞 《电气开关》 1994年第2期25-32,共8页
真空中电极击穿的二个条件:极间电场和极表面的有效面积.本文围绕着这二个条件,从极表面的电子发射、极间产生金属蒸汽到极间击穿,综合地讨论其击穿机理、影响因素和提高绝缘强度的方法.
关键词 真空灭弧室 绝缘 极间击穿
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Improvement of Electrical Performance of SOI-LIGBT by Resistive Field Plate
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作者 杨洪强 韩磊 陈星弼 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2002年第10期1014-1018,共5页
The electrical performance including breakdown voltage and turn-off speed of SOI-LIGBT is improved by incorporating a resistive field plate (RFP) and a p-MOSFET.The p-MOSFET is controlled by a signal detected from a p... The electrical performance including breakdown voltage and turn-off speed of SOI-LIGBT is improved by incorporating a resistive field plate (RFP) and a p-MOSFET.The p-MOSFET is controlled by a signal detected from a point of the RFP.During the turning-off of the IGBT,the p-MOSFET is turned on,which provides a channel for the excessive carriers to flow out of the drift region and prevents the carriers from being injected into the drift region.At the same time,the electric field affected by the RFP makes the excessive carriers flow through a wider region,which almost eliminates the second phase of the turning-off of the SOI-LIGBT caused by the substrate bias.Faster turn-off speed is achieved by above two factors.During the on state of the IGBT,the p-MOSFET is off,which leads to an on-state performance like normal one.At least,the increase of the breakdown voltage for 25% and the decrease of the turn-off time for 65% can be achieved by this structure as can be verified by the numerical simulation results. 展开更多
关键词 resistive field plate dynamic controlled anode-short turn-off time breakdown voltage forward voltage drop
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Anode Plasma Influence on Breakdown Formation in Explosive-Emission Electron Sources
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作者 Eduard N. Abdullin Gennady P. Bazhenov Alexander V. Morozov 《Journal of Energy and Power Engineering》 2012年第9期1536-1541,共6页
Breakdown formation in the explosive-emission sources is related to the interelectrode gap filling with the cathode and anode plasma generated at the anode and in the gap under the beam influence. Under conditions of ... Breakdown formation in the explosive-emission sources is related to the interelectrode gap filling with the cathode and anode plasma generated at the anode and in the gap under the beam influence. Under conditions of saturation of the cathode plasma emissive ability as well as when the measures on the emission boundary stabilization are taken, the anode plasma has the deciding part in the formation of the electron source breakdown. The paper presents the results of the anode plasma investigations obtained to solve the problem of the electron beam length increase in the explosive-emission sources. The data concerning the gas release from the anode, the mechanism of the anode plasma formation and the anode plasma influence on the parameters of the generated electron beam are presented as well. 展开更多
关键词 Explosive-emission electron source gas release anode plasma breakdown.
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Influence of Cathode Plasma on Breakdown Formation in Plasma-Anode Explosive-Emission Source
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作者 Eduard N. Abdullin Gennady P. Bazhenov Yury P. Bazhenov Alexander V. Morozov 《Journal of Energy and Power Engineering》 2012年第6期999-1004,共6页
Breakdown formation in an explosive-emission electron source is related to the interelectrode gap filling with plasma propagating from the cathode and formed at the anode and in the interelectrode gap under the electr... Breakdown formation in an explosive-emission electron source is related to the interelectrode gap filling with plasma propagating from the cathode and formed at the anode and in the interelectrode gap under the electron beam action. Plasma anode is used to increase the beam current density. Preliminary interelectrode gap filling with plasma in the explosive-emission source decreases the influence of uncontrolled plasma arrival from the anode on the diode processes, promotes current density increase and duration of generated electron beams. The paper considers the influence of the cathode geometry on the breakdown formation in the plasma-anode explosive-emission electron source. The data on obtaining of microsecond electron beams with current density of 30 A/cm^2 and 1.5-2 kA/cm^2 are presented. 展开更多
关键词 Explosive-emission electron source plasma anode high-current phase of vacuum discharge.
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