石墨烯涂层对电磁轨道炮滑动电接触性能的影响
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摘要
石墨烯具有优良的力学、电学、热学性能,对提高电磁轨道炮滑动电接触性能具有较大的应用潜力。通过理论分析和仿真研究,对石墨烯涂层应用在枢轨界面进行了分析;通过设计对比试验,在相同的条件下,对普通U形电枢和石墨烯涂层U形电枢进行了发射试验。结果表明:石墨烯涂层有利于改善枢轨界面间的电接触状态,具有良好的通流能力;石墨烯涂层对提高电枢速度、减少界面间热量的产生表现出了积极的作用,且具有抗电弧烧蚀和润滑的作用。该研究结果为改进电磁轨道炮滑动电接触特性提供了参考和指导。
Graphene,with excellent mechanical,electrical and thermal properties,has great potential to improve the sliding electrical contact performance of electromagnetic railgun. An analysis was made of the application of graphene coating to the interface between rails and armature through theoretical analysis and simulation study. Besides,U-shaped armatures coated with & without graphene were launched comparatively under the same condition. The research results show that the graphene coating is beneficial to improving the electrical contact state of the interface between rails and armature and has good transmission current capacity. In addition,the graphene coating not only plays an active role in improving armature speed and decreasing the heat generation of the interface between rails and armature,but also has the function of arc-resistance and lubrication. The research results can provide the reference and guidance for improving the sliding electrical contact performance of electromagnetic railgun.
Graphene,with excellent mechanical,electrical and thermal properties,has great potential to improve the sliding electrical contact performance of electromagnetic railgun. An analysis was made of the application of graphene coating to the interface between rails and armature through theoretical analysis and simulation study. Besides,U-shaped armatures coated with & without graphene were launched comparatively under the same condition. The research results show that the graphene coating is beneficial to improving the electrical contact state of the interface between rails and armature and has good transmission current capacity. In addition,the graphene coating not only plays an active role in improving armature speed and decreasing the heat generation of the interface between rails and armature,but also has the function of arc-resistance and lubrication. The research results can provide the reference and guidance for improving the sliding electrical contact performance of electromagnetic railgun.
引文
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[2]吕庆敖,雷彬,李治源,等.电磁轨道炮军事应用综述[J].火炮发射与控制学报,2009(1):92-96.LYU Qing’ao,LEI Bin,LI Zhiyuan,et al.Summary of electromagnetic railgun military application[J].Journal of Gun Launch&Control,2009(1):92-96.(in Chinese)
[3]IRWIN L S,MICHAEL J V,CRAIG N B,et al.Wear behavior of lubricant-conditioned copper rails and armatures in a railgun[J].IEEE Transactions on Plasma Science,2011,39(1):138-143.
[4]吕彦,任泽宁,钱学梅,等.电磁轨道炮身管结构的研究概况[J].兵器材料科学与工程,2012,35(1):93-96.LYU Yan,REN Zening,QIAN Xuemei,et al.Research status of electromagnetic rail gun barrel structure[J].Ordnance Material Science and Engineering,2012,35(1):93-96.(in Chinese)
[5]MATTHEW J S,RICHARD W N.Materials selection exercise for electromagnetic launcher rails[J].IEEE Transactions on Magnetics,2013,49(8):4831-4838.
[6]NOVOSELOV K S,GEIM A K,MOROZOV S V,et al.Electric field effect in atomically thin carbon films[J].Science,2004,306(5696):666-669.
[7]GEIM A K.Graphene:status and prospects[J].Science,2009,324(5934):1530-1534.
[8]KIM K S,ZHAO Y,JANG H,et al.Large-scale pattern growth of graphene films for stretchable transparent electrodes[J].Nature,2009,457(7230):706-710.
[9]SON Y W,COHEN M L,LOUIE S G.Half-metallic graphene nanoribbons[J].Nature,2006,444(7117):347-349.
[10]BALANDIN A A,GHOSH S,BAO W Z,et al.Superior thermal conductivity of single-layer graphene[J].Nano Lett,2008,8(3):902-907.
[11]徐伟东,袁伟群,陈允,等.电磁轨道发射器连续发射的滑动电接触[J].强激光与粒子束,2012,24(3):668-672.XU Weidong,YUAN Weiqun,CHEN Yun,et al.Sliding electrical contact performance of electromagnetic launcher system in rapid fire mode[J].High Power Laser and Particle Beams,2012,24(3):668-672.(in Chinese)
[12]BRAUNOVIC M,MYSHKIN N K,KONCHITS V V.Electrical contacts fundamentals,applications and technology[M].Florida:CRC Press,2006.
[13]金龙文,雷彬,张倩,等.电磁轨道炮热生成机理及温度场数值仿真[J].火炮发射与控制学报,2012(4):9-12.JIN Longwen,LEI Bin,ZHANG Qian,et al.Heat generation mechanism analysis and numerical simulation of temperature field in electromagnetic rail gun[J].Journal of Gun Launch&Control,2012(4):9-12.(in Chinese)