Results 1 to 10 of about 201,406 (148)
Dianci bileiqi, 2021 文章综述了中国和其他国家避雷器用氧化锌电阻片技术的现状与发展趋势。氧化锌电阻片是金属氧化物避雷器的核心部件,它的电性能决定了避雷器的电性能。电阻片的发展是随着避雷器的要求而发展的,随着避雷器向特高压、罐式小型化及特高压直流发展,电阻片向低成本、低残压、高能量、高梯度及交直流通用的方向发展。讨论了配方和工艺对电阻片电性能的影响,总结了提高电阻片电压梯度和通流容量、降低电阻片的残压和直流电阻片的研究方法。指出了提高电阻片生产的自动化程度和绿色制造的重要性,分析了避雷器标准的修订对电阻片电性能的影响 ...
王兰义, 任鑫, 黄海, 姚政
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, 2020 本发明涉及一种电阻式应变片，包括至少一层导电膜，所述导电膜为曲线结构，所述曲线结构包括与所述应变片所测应变方向一致的第一线段以及与所测应变方向不一致的第二线段；所述第一线段的宽度小于所述第二线段的宽度，以实现较大的灵敏系数。本发明提供的电阻式应变片，相比传统的金属箔式电阻应变片，本发明的量程更大，其弹性量程可提高数倍。相比于含碳系粉末或结构的混合物弹性薄膜或弹性织物，本发明稳定性高 ...
李爽, 刘国栋, 苏业旺
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Dianci bileiqi, 2022 可控自恢复消能装置避雷器采用防闪络结构，可以有效防止单个电阻片侧面闪络引起整只避雷器故障，并通过监测系统及时查找故障点，以便得到及时处理，不会造成线路异常停电。避雷器具有并联柱数多、吸收能量大、动作次数多、通流时间长的特点。研究电阻片多次冲击能量耐受以及耐受后电阻片的性能变化情况，对确保避雷器长期可靠运行具有重要意义。试验以平高东芝(廊坊)避雷器有限公司用于白鹤滩-江苏工程虞城站可控自恢复消能装置避雷器的电阻片为对象，研究了电阻片依次进行210次冲击能量耐受试验、加速老化试验 ...
1.平高东芝(廊坊)避雷器有限公司
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, 2006 对于许多工程实际中的应变测量,现场环境可能不适合应变片的养护,需要密封而造成打磨粘贴困难以及工期要求比较紧而无法直接在现场粘贴养护,可以将应变粘贴养护及部分密封工作提前到实验室进行.电阻点焊技术可以提供将薄片应变传感器焊接在母材上的手段,并且能够保证焊接过程中不产生引起应变片损坏的热量.本文对电阻点焊薄片应变传感器技术的传递性能和疲劳性能进行了一系列试验研究 ...
徐永君
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Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Magnesium hydride (MgH2) is a promising solid‐state hydrogen storage material due to its high gravimetric capacity and excellent reversibility. However, its practical application is hindered by high thermodynamic stability and sluggish reaction kinetics.
Xingyang Chen +6 more
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The commercialization of lithium–sulfur batteries (Li–S batteries) has been hindered by the shuttle effect of lithium polysulfides (LiPSs) and sluggish redox kinetics. In this study, we constructed a three‐dimensional hollow conductive network host material for sulfur with synergistic enhancement effects.
Jie Yang +6 more
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Kinetic‐Controlled Growth of Iron Chalcogenide Nanosheets Featuring Besnus Transition
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Two‐dimensional (2D) Fe‐based nanosheets have sparked wide attention owing to exotic magnetism, superconductivity and topological phases. However, the synthesis of 2D FemXn (X = Te/Se/S, m, n: integer), typically in a non‐stoichiometric ratio, remains challenging because of narrow thermodynamic windows.
Hongmei Zhang +11 more
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT To address the demand for high‐temperature stability, broadband strong absorption, and multifunctional integration of electromagnetic wave absorbing materials in complex service environments, lightweight molybdenum disulfide (MoS2) decorated silicon carbide (SiC) nanofiber composite aerogels with a directional layered interconnected structure ...
Zhi Song +4 more
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Dielectric polymers commonly suffer from severe performance degradation above 150°C, hindering advanced power systems. Herein, we demonstrate a polyetherimide (PEI) nanocomposite that overcomes this by mimicking the gradient architecture of nacre and bamboo, incorporating a continuous vertical gradient of fluorinated boron nitride nanosheets ...
Jian Wang +8 more
wiley +1 more source
Dianci bileiqi, 2019 为了减少ZnO电阻片在能量冲击下侧面失效率,将不同配方的高阻釉施涂在电阻片的侧面,研究不同的高阻釉对于电阻片电性能的影响。结果表明:在电阻片的侧面施涂绝缘能力和膨胀系数匹配性均达到要求的高阻层,能够使电阻片的缺陷减少,均匀性提高,从而使电阻片的电性能提高,降低了ZnO电阻片在能量冲击下侧面失效率。
厍海波 +5 more
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