共查询到17条相似文献,搜索用时 109 毫秒
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上进液式铜箔一体机设备是一种新型的铜箔生产设备,主要包括阴极辊、阳极槽、电解液输送装置、电解液回流接收装置等,它与传统的铜箔生产设备不同之处在于,将传统设备的“下进液式”电解液由下而上的流动,改为“上进液式”电解液由上而下的流动,并在电解液流入端口设有流量调节装置,从而提高了电解液的流动速度和平稳性,也使铜箔的均厚得到很好的控制。 相似文献
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《机械制造与自动化》2017,(6):45-48
一项新的铜箔在石墨烯薄膜上的沉积工艺已经被研究出来。和以往通过CVD法在铜箔上生长石墨烯的研究相比较,该研究应用了一种无接触式电子加工工艺的多弧离子电镀法。在实验中,石墨烯表面成功地形成了一层薄的铜膜,表明这种铜箔沉积工艺的实用性。此外,通过滚压可显著加快工艺过程,实现大量生产。 相似文献
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为解决目前卷材剪切机不能满足薄型化电子铜箔剪切质量要求的难题,针对电子铜箔材质特性,研究了一种基于偏心轮连杆机构设计的切刀机构.首先,从偏心轮传动机理和摆杆的联动两方面,详细地阐述了切刀机构的运行原理;然后,对切刀啮合点的受力情况进行了分析;最后,通过样机实际测量的经验数据分析和运用Matlab计算数据分析,完成了切刀机构的优化设计.研究结果表明,根据铜箔厚度的不同,通过适当地调整切刀机构中摆杆及刀架的技术参数,可改善铜箔的剪切效果,解决了铜箔剪切过程中易起皱、产生铜粉的问题,满足了电子铜箔剪切的特殊要求. 相似文献
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通过改变激光脉冲能量和激光聚焦位置,进行了激光诱导向前转移铜箔的实验,并通过超景深三维显微镜和扫描电子显微镜对基片和约束层上沉积的铜箔进行了观察,探讨了激光脉冲能量和激光聚焦位置对铜沉积效果所产生的影响,在此基础上研究了激光诱导向前转移的机理。研究结果表明,在石英玻璃基片上沉积的铜箔直径最小可达10μm,远小于激光光斑直径;在约束层上也沉积有铜箔,即同时出现了激光诱导向后转移的现象;光脉冲能量增大,石英玻璃上沉积的铜箔逐渐分散,尺寸逐渐增大,而且呈环形分布;通过调节靶材离焦点距离,可以使环形消失,并使沉积尺寸降到激光光斑尺寸以下。最后成功实现了微细阵列的激光诱导沉积。 相似文献
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A thin target composed of copper and aluminum foils was placed in the accelerator vacuum tube and irradiated with circulating 50-GeV protons. The number of protons that hit the target during the accelerator run was determined by the activation of the monitor aluminum foil, and the radionuclide activities in each foil were measured. A set of the radionuclide production cross sections in 50-GeV proton interactions with copper nuclei were evaluated. 相似文献
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采用镍箔中介法研究了铜与Al2O3陶瓷的粘接,重点考察了镍箔的厚度、粘接温度、压力对界面粘结强度的影响,在温度850℃,压力6.5MPa,粘接时间300s的条件下,获得最大粘结强度18.0MPa。 相似文献
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针对微尺度下金属箔模具冲孔存在模具挤压磨损、对中困难,激光打孔存在烧蚀、吸收层无法补偿等问题,提出通过激光诱导空泡对金属箔进行加载来实现冲裁小孔的方法。研究了不同激光焦点位置(H=0~4 mm)、激光能量(E=10.3~50.8 mJ)和铜箔厚度(T=20~70μm)对铜箔冲孔的影响,发现激光焦点位置影响明显,当铜箔变形平均深度达到147.0μm后,铜箔发生剪切断裂,可实现冲裁,并且制备的小孔边缘正表面无烧蚀、毛边、裂纹和卷边等缺陷。同时,利用高速摄影仪对激光诱导空化微孔冲裁过程进行研究,结果表明激光诱导空化微孔冲裁过程是激光等离子体冲击波、空泡溃灭冲击波和微射流共同加载的过程。 相似文献
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Rolled copper foil is widely used in high frequency and speed transmission of fine line printed circuit board, because of its high strength, good toughness and high density. In this paper, a theoretical model for copper foil rolling in mixed lubrication regime was developed on the basis of the average volume flow model and asperity flattening model. A more accurate relation for the variation of the lubricant viscosity with pressure and temperature was considered. The cold rolled copper foil experiment was carried on with different viscosity of rolling oil and pass reduction. The effects of rolling oil viscosity and pass reduction on lubricant pressure, contact area ratio and film thickness ratio were studied. The calculation results agree well with the measured data from copper foil rolling experiment. For obtaining higher surface quality, the rolling oil viscosity is about 10 mm2/s, and the pass reduction is about 30%. Copyright © 2013 John Wiley & Sons, Ltd. 相似文献
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It has been suggested from molecular dynamics simulations that low-coordination-number sites are produced at a sliding metal–metal interface, but, because of their instability, they may rapidly relax to increase their coordination number. The possible presence of such low-coordination sites on the surface is tested by exploiting the observation that the desorption temperatures of 1-alkenes on copper increase with both the number of carbons atoms in the 1-alkenes and the surface roughness. Thus, 1-alkenes desorb from a Cu(111) single crystal, with relatively few low-coordination sites, at temperatures between 60 and 100 K lower than from a polycrystalline copper foil. The decrease in friction after impinging a flux of various 1-alkenes on a copper foil, while rubbing in an ultrahigh vacuum tribometer, correlates very well with the corresponding 1-alkene coverages on a copper foil, estimated using the desorption kinetics. This suggests either that rubbing does not result in the formation of lower-coordination sites or that they relax sufficiently rapidly that they do not influence the surface chemistry of 1-alkenes. Surface analyses indicate that shear at the interface causes carbon to diffuse into the subsurface region to form a tribofilm. 相似文献