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西安交通大学 [2]
兰州理工大学 [1]
长春光学精密机械与物... [1]
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期刊论文 [3]
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Simulation research of deflection phenomenon of vacuum arc and anode erosion under the combined action of axial magnetic field and external transverse magnetic field
期刊论文
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering, 2014, 卷号: 34, 期号: [db:dc_citation_issue], 页码: 941-946
作者:
Huang, Xiaolong
;
Wang, Lijun
;
Jia, Shenli
;
Wang, Haijing
;
Hu, Lilan
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  |  
浏览/下载:4/0
  |  
提交时间:2019/12/03
Anode temperature
Anode temperature distribution
Axial magnetic field
High current vacuum arc
Melting and solidification model
Simulation research
Transverse magnetic field
Vacuum arcs
Effect of distribution of anode temperature on weld appearance in arc coupled AA-TIG high speed welding
期刊论文
Hanjie Xuebao/Transactions of the China Welding Institution, 2013, 卷号: 34, 期号: 9, 页码: 13-16
作者:
Huang, Yong
;
Qu, Huaiyu
;
Wang, Xinxin
;
Fan, Ding
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  |  
浏览/下载:1/0
  |  
提交时间:2020/11/14
Anodes
Gas welding
Thermocouples
Anode temperature distribution
Arc coupled AA-TIG
Distribution of temperature
High speed welding
Maximum temperature
Minimum temperatures
Tungsten electrodes
Vertical direction
Simulation of anode thermal process in vacuum arc under axial magnetic field
期刊论文
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society, 2011, 卷号: 26, 期号: [db:dc_citation_issue], 页码: 65-73
作者:
Wang, Lijun
;
Jia, Shenli
;
Liu, Yu
;
Yang, Dingge
;
Shi, Meng
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  |  
浏览/下载:1/0
  |  
提交时间:2019/12/10
Anode temperature distribution
Axial magnetic field
Heat flux densities
Saturated vapor pressure
Saturation vapor pressure
Simulation research
Two-dimensional transient
Vacuum arcs
Fabrication and electron emission of carbon microtubes (EI CONFERENCE)
会议论文
Technical Digest of the 18th International Vacuum Nanoelectronics Conference, IVNC 2005, July 10, 2005 - July 14, 2005, Oxford, United kingdom
Wang W.
;
Xia Y.
;
Lei D.
;
Chen S.
;
Liu L.
;
Chen M.
;
Liang J.
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浏览/下载:29/0
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提交时间:2013/03/25
Carbon nanotubes have been attracting attention because of their unique physical properties and their application potential for field emission cathode. Carbon nanotubes possess the following properties favorable for field emission material
such as a high aspect ratio and sharp tip
high chemical stability
high mechanical strength
stable at high temperature. Some research works on carbon nanotubes field emitter and field emission display have been reported. Here
a kind of carbon microtubes and its field emission properties are introduced. They have some different properties with carbon nanotubes
and the density is lower than carbon nanotubes bundles. These carbon microtubes are directly synthesized by liquidoid epitaxy method on silicon substrates at low temperature. The field emission properties of carbon microtubes are reported too. Carbon microtubes film is synthesized in liquid by electrolysis. The graphite plate is as anode
and n-silicon substrate with resistivity of 4-8 cm is as cathode. The electrolysis current is about 5-8mA/cm2
and applied voltage is 800-1500V. Temperatures of the methanol base solution is maintained at 60C in process of deposition of carbon microtubes. Carbon microtubes film is observed by scanning electron microscopy(SEM)
as shown in fig.1(a
b). The wall's thickness of carbon microtube is about 60nm. The diameter of carbon microtube is about 0.8 m. Raman spectrum of carbon microtubes film shows the two peaks at 1342and 1560cm-1. The field emission properties of carbon microtubes are measured in high vacuum chamber(10-5Pa). The emission area of carbon microtubes is 0.5cm 0.5cm. The threshold of field emission of the carbon microtubes film is about 3.6V/ m. Field emission property of carbon microtubes film is shown in fig.2. Another
when the electric field between anode and cathode is 10V/ m
the electric field distribution on single carbon microtube is also given after calculation according to electric field theory. Fig 3 shows that electric field distribution vertical section on the of single carbon microtube top with 2 m of highness. These results may help us to understand field emission properties of carbon microtubes. According to research results
it is found that liquidoid synthesis is simple method to produce carbon microtubes cold cathode material
and the carbon microtubes have better field emission properties. 2005 IEEE.
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