Results 51 to 60 of about 924,643 (269)
Gaoya dianqi, 2020 断路器配置合闸电阻是降低线路合闸过电压的有效措施。介绍了800 kV断路器的结构特点,合闸电阻开关与合闸电阻并联后与两个主灭弧单元串联。800 kV断路器合闸电阻开关合闸过程中传动机构采用变长度连杆设计,实现了合闸电阻开关合闸时先慢后快的运动特性,保证了合闸电阻8～12 ms的可靠投入。800 kV断路器合闸电阻开关动触头采用弹簧振子设计,实现了合闸电阻开关分闸时后分的运动特性,保证了灭弧功能由主灭弧单元完成。800 kV断路器合闸电阻额定热容量为39.7 MJ,针对操作顺序C（1.3E）-3 min ...
孟维东 +4 more
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Advanced Engineering Materials, EarlyView.Micro‐Raman spectroscopy is applied to characterize corrosion products in a recycled‐based MgO–316L steel composite anode after molten salt electrolysis. A depth‐dependent Fe–O/Fe–Al–O layer sequence of magnetite, hercynite, and an Al‐doped magnetite transition zone is identified.
Felix Drechsler +9 more
wiley +1 more source
Dianci bileiqi, 2012 800 kV无机粘接高压开关用瓷绝缘子是800 kV断路器和GIS出线套管的关键部件。根据800 kV断路器和GIS出线套管的技术要求,介绍了800 kV无机粘接开关用瓷绝缘子的设计、制造及试验等研制情况。针对毛坯挤制、修坯、干燥、烧成及粘接中的技术关键,提出了气氛控制、接口控制、研磨芯杆等工艺方案和措施。试验结果表明,产品通过了所要求的试验。
朱小峰, 马福侠, 安腊梅
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Phase Separation of Bismuth Ferrite into Magnetite under Voltage Stressing
, 2007 Micro-Raman studies show that under ~700 kV/cm of d.c. voltage stressing for a few seconds, thin-film bismuth ferrite BiFeO3 phase separates into magnetite Fe3O4.
Lin, Y. +5 more
core +1 more source
Advanced Engineering Materials, EarlyView.The subject of this work is the development of a corrosion‐protective coating on steel sheets for form hardening. Rapid heating in an extreme high vacuum (XHV)‐adequate atmosphere is a useful method to prevent oxidation during alloying of 22MnB5 and aluminum to obtain a metallurgical bonding.
Lorenz Albracht +5 more
wiley +1 more source
Gaoya dianqi, 2012 隔离开关是在有电压无负荷情况下分合线路用的开关设备。在2005年,中国率先在西北电网建设第1条750 kV线路,并且变电站的安装高度在海拔2 000 m左右。因此,研制适用于高海拔地区的800 kV高压交流隔离开关是高压电力领域的一个重要课题,具有重大工程应用作用。笔者在综述国外800 kV特高压交流隔离开关发展状况的基础上,通过对800 kV高压交流隔离开关的绝缘距离计算、均压环设计等一些技术参数进行探讨与研究,得出了一些初步的结论。根据西北的环境特点并进行线路统计耐受电压计算,确定高海拔地区的800
齐炳利, 孟忠, 王宇驰, 康鹏
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Surface Tension Measurement of Ti‐6Al‐4V by Falling Droplet Method in Oxygen‐Free Atmosphere
Advanced Engineering Materials, EarlyView.In this article, the temperature‐dependent surface tension of free falling, oscillating Ti‐6Al‐4V droplets is investigated in both argon and monosilane doped, oxygen‐free atmosphere. Droplet temperature and oscillation are captured with one single high‐speed camera, and the surface tension is calculated with Rayleigh's formula.
Johannes May +9 more
wiley +1 more source
Characterization of PARIS LaBr$_3$(Ce)-NaI(Tl) phoswich detectors upto $E_\gamma$ $\sim$ 22 MeV
, 2016 In order to understand the performance of the PARIS (Photon Array for the studies with Radioactive Ion and Stable beams) detector, detailed characterization of two individual phoswich (LaBr$_3$(Ce)-NaI(Tl)) elements has been carried out.
Banerjee, S. R. +18 more
core +3 more sources
Creating Ti–Fe α/β Alloys by Diffusion‐Driven Solid‐State Processing
Advanced Engineering Materials, EarlyView.This study proposes making alloys containing fast diffusing elements that are difficult to produce by ingot metallurgy, by diffusion‐driven solid‐state HIP processing of elemental powders and low‐temperature homogenisation. Here, novel Fe‐Ti α–β alloys are formed having fine α–β lamellae, a small β prior grain size without significant intermetallics ...
Jiaqi Xu +10 more
wiley +1 more source
Gaoya dianqi, 2011 ±800 kV直流输电是目前世界上直流输电领域电压等级最高的输电方式。±800 kV特高压直流换流阀是特高压直流输电（UHVDC）中的关键设备,在投入电网使用之前必须要进行严格的型式试验。单阀交流耐压试验,是特高压直流换流阀绝缘型式试验中一个比较特殊的试验项目。笔者以国内自主试验的首例±800 kV换流阀绝缘型式试验为例,介绍了±800 kV换流阀相关电气结构,并对单阀交流试验的加压方法进行了研究。
李强 +6 more
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