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介绍了真空均质乳化机的组成及工作原理,根据乳化机的自动化控制要求,设计了基于PLC的控制系统,包括控制系统总体方案的设计,控制系统硬件和软件的设计,并对真空均质乳化机进行了现场调试。结果表明,设计的控制系统能够满足真空均质乳化机智能控制的要求,实现了乳化的自动控制,设备运行效果良好。 相似文献
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本文叙述对提供溅射薄膜光学厚度的实时监控工业用的溅射装置的改进。允许通过氦氖激光束时,设计利用在靶中心有个真空小窗口,通过溅射膜增长调节反射光强容许就地测量其厚度。 相似文献
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《现代制造技术与装备》2017,(11)
本文对PLC技术进行分析,使PLC技术能够和铸造控制系统相结合,设计了基于PLC技术真空调压铸造智能控制系统。本文设计的真空掉牙铸造智能控制系统能够实现真空制造过程工艺的智能化控制,且在外界发生变化的过程中修改其控制参数。 相似文献
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为使大尺寸印制板能够进行低温等离子处理,设计了大型等离子处理设备,该设备具有真空度可调的真空系统、电极可冷却的电源系统及基于可编程逻辑控制器(Programmable Logic Control,PLC)和触摸屏的控制系统。文中简要介绍了大型等离子处理设备的组成及工作方式,详细阐述了真空系统设计,包括真空泵组选型计算和基于有限元的真空腔体结构优化设计。实践证明,该设备具有等离子体产生速度快、腔体温度控制效果好等特点,达到了国内领先水平。 相似文献
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用直流平面磁控溅射方法在抛光玻璃衬底上淀积 Mo薄膜 ,将薄膜在真空环境中进行热处理 ,用扫描探针显微镜 ( SPM)方法观察了薄膜的表面形貌 ,X-射线衍射方法分析了薄膜中应力各向异性特征及其与淀积时溅射气体压强和真空热处理的关系。发现薄膜中晶粒具有明显的择优取向 ,内应力沿径向对称分布 ,切向应力比径向应力更具有压应力特性 ,应力的各向异性特征与溅射原子的入射方向有关。真空热处理对薄膜中压应力的释放作用不明显 ,然而能有效地释放薄膜中的张应力。用 HF酸腐蚀衬底的方法制备了自支撑 Mo薄膜 ,发现脱膜前后薄膜表面微观形貌未产生大的变化。 相似文献
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用直流平面磁控溅射方法在抛光玻璃衬底上淀积Mo薄膜,将薄膜在真空环境中进行热处理,用扫描探针显微镜(SPM)方法观察了薄膜的表面形貌,X-射线衍射方法分析了薄膜中应力各向异性特征及其与淀积时溅射气体压强和真空热处理的关系.发现薄膜中晶粒具有明显的择优取向,内应力沿径向对称分布,切向应力比径向应力更具有压应力特性,应力的各向异性特征与溅射原子的入射方向有关.真空热处理对薄膜中压应力的释放作用不明显,然而能有效地释放薄膜中的张应力.用HF酸腐蚀衬底的方法制备了自支撑Mo薄膜,发现脱膜前后薄膜表面微观形貌未产生大的变化. 相似文献
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用直流平面磁控溅射方法在抛光玻璃衬底上淀积Mo薄膜,将薄膜在真空环境中进行热处理,用扫描探针显微镜(SPM)方法观察了薄膜的表面形貌,X-射线衍射方法分析了薄膜中应力各向异性特征及其与淀积时溅射气体压强和真空热处理的关系.发现薄膜中晶粒具有明显的择优取向,内应力沿径向对称分布,切向应力比径向应力更具有压应力特性,应力的各向异性特征与溅射原子的入射方向有关.真空热处理对薄膜中压应力的释放作用不明显,然而能有效地释放薄膜中的张应力.用HF酸腐蚀衬底的方法制备了自支撑Mo薄膜,发现脱膜前后薄膜表面微观形貌未产生大的变化. 相似文献
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浅谈10kV真空断路器的应用 总被引:1,自引:0,他引:1
我国于20世纪60年代开始研制真空断路器,70年代正式投入生产。目前我国10kv级真空断路器的额定短路开断电流已达63kA,切电容器组的重击穿率已降至1%以下。随着电力系统的迅猛发展,10kV真空断路器在我国已经大批量地生产和使用。对于一线检修人员来说,提高对真空断路器的认识,加强维护保养,使其安全运行,成了一个迫在眉睫的问题。 相似文献
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We demonstrate the incorporation of a quadrupole electromagnet into an ultrahigh vacuum sputtering system for the vector control of induced magnetic anisotropy in magnetic thin-film heterostructures. A stationary quadrupole electromagnet is used to generate a magnetic field, which rotates synchronously with the physical axes of the substrate in situ during sputtering. An arbitrary anisotropy direction can be set for successive ferromagnetic layers by adjusting the phase difference of substrate and field rotation. The ability to rotate the substrate during deposition and change anisotropy without breaking vacuum enables the deposition of magnetically soft heterostructures with arbitrary in-plane anisotropy axes. 相似文献
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A vacuum interlock system which permits rapid loading of substrates for molecular beam epitaxy crystal growth is described. Substrates are introduced through a separate, independently pumped, loading chamber while maintaining the main growth chamber under vacuum, thereby minimizing contamination of the evaporation sources and reducing the downtime of the system between successive growth runs. The design permits outgassing of the substrates prior to their insertion in the growth chamber, and has provisions for a later addition of a separate sputtering or chemical etching capability. 相似文献
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Preparing cellular structures for visualization by high-resolution scanning electron microscopy (SEM) is a multi-step process which includes fixation, dehydration, drying and metal coating. Drying and metal coating are limiting for high-resolution work. Commonly, the dried samples are exposed to the air before they are inserted into a metal coating apparatus, thereby exposing them to moisture and the accompanying risk of rehydration, which may cause changes in the supramolecular structure. We have modified a freeze-dryer to accommodate a magnetron sputtering head, in order to sputter-coat the frozen-dried samples while still in the drying chamber in the cold, a process we call cryosputtering. A layer of 1·5 nm of tungsten was cryosputtered onto whole mounts of cytoskeletons from detergent-extracted human glioma cells or fibroblasts and the specimens were examined by high-resolution SEM and transmission electron microscopy (TEM). To reduce the effects of backstreaming oil from the vacuum system, a turbomolecular pump backed by a two-stage rotary vane pump was connected to the drying-coating chamber. This pump system provides a high vacuum, making it possible to dry the specimens at — 90°C/183 K, thus reducing the risk for recrystallization of water. Furthermore, the high vacuum minimizes the negative effects of contaminants, which can be deposited onto the specimen surface and affect the quality of the metal coat formed during sputtering. 相似文献
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Jung Su Kim Kyung Hyun Choi Kang Dae Kim Chung Hwan Kim Sung Woo Bae Dong Soo Kim 《Journal of Mechanical Science and Technology》2010,24(1):301-305
The conductive coating method is used for various industrial fields. For example, the sputtering process is used to coat the
ITO layer in LCD or OLED panel manufacturing process and fabricate a base layer of substrate of an electric printing device.
However, conventional coating processes (beam sputtering, spin coating etc.) have problems in the industrial manufacturing
process. These processes have a very high cost and critical manufacturing environment as a vacuum process. Recently, many
researchers have proposed various printing processes instead of conventional coating processes. We propose an ESD printing
process in ITO coating layer and apply to fabricate a conductive coating film. Furthermore, the effect of the nozzle and also
the applied voltage on different configurations of the nozzle head was also studied for better understanding of the electro
static deposition process. 相似文献
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Zhengyang Zhou Liang Zhao Weizhen Sun Qiulong Ni 《Instruments and Experimental Techniques》2016,59(1):84-90
Triggered vacuum switch (TVS) is one of the important switch apparatuses in the high pulsed power system, which takes the vacuum as insulation and arc-extinguishing medium of main gap. The conduction of TVS is the arcing process of vacuum arc in practice. So, it is meaningful to research on the vacuum arc characteristics for the high current application of TVS. A six-gap rod electrode system is studied in this paper. It is made up of 3 pairs of rod electrodes, i.e., spatially interleaved rods of opposite polarity on a ring. The arc development under different high currents is tested and discussed, based on the electrical characteristics of the vacuum arc voltage and arc resistance. The variety of arc voltage shows the parallel arcing and the transfer process in the multi-channel, which is benefit to maintain the diffusion of vacuum arc. A TVS sample based on multi-rod electrode has carried high current of 225 kA in peak and charge transfer of 45 C in a pulse. 相似文献