Results 21 to 30 of about 1,014,711 (201)
本文叙述了ZnO避雷器用阀片的电性能的均匀性。使用热像法是评价均匀性的一种简单而实用的方法,它是通过对喷涂有金属的ZnO阀片的表面的红外线辐射热照像,用试验获得均匀性和通流容量之间的关系。具有相同均匀性系数δ的阀片,击穿前的通流容量与交流短时过电压的波幅大小和持续时间的长短无关。还提出了交流短时过电压有允许极限的考虑。
李瑞田
doaj
ABSTRACT Composite materials hold significant potential for abrasive sealing, yet composite materials used for abrasive sealing fall short in service durability under extreme environments. Here, a controllable strategy for adjusting pore structure is proposed, aiming to design a YSZ(ESP)/BN@ZrO2‐polyester coating with hybrid micron/nanometer ...
Shuang Yu +8 more
wiley +1 more source
本文叙述了一种用全息二次曝光产生的透射干涉纹和晶体前后表面产生的反射干涉纹、联合求解透明晶体折射率均匀性△n分布的新方法.对晶体进行测量时采用线偏振光,可由实验分别测出晶体对寻常光的折射率均匀性△n。和对非常光的折射率均匀性△nc。在此基础上逐点计算出晶体的双折射率均匀性(△(nc-n0))/(△Z).
周焜 +4 more
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ABSTRACT Sodium metal batteries hold significant promise for large‐scale energy storage due to the high theoretical capacity and abundant sodium sources, yet sodium‐metal anodes are hindered by dendrite propagation, unstable solid electrolyte interphase, and poor cycling efficiency arising from uneven Na deposition and volume changes.
Nan Xing +7 more
wiley +1 more source
ABSTRACT Rechargeable aluminium‐ion batteries (RAIBs) are promising candidates for sustainable energy storage owing to their low cost, safety, and resource abundance. However, the lack of durable cathode materials restricts their development. Here, we propose a topology‐guided design strategy by synthesizing three thioether‐bridged naphthoquinone ...
Jia Qiao +8 more
wiley +1 more source
氧化锌电阻片的通流能力主要取决于电阻片的微观均匀性。使用纳米材料,有助于提高瓷体均匀性和致密性,使得氧化锌电阻片电气性能尤其是通流能力得到改善。为使纳米材料充分发挥作用,必须解决纳米材料自身的团聚,并提高料浆混合的均匀性。
刘勇飞
doaj
ABSTRACT Harnessing the potential of thermoelectric technology to convert waste heat into electricity, this study sought to enhance overall energy utilization efficiency and contribute to sustainable development through the advancement of environmentally friendly direct‐conversion materials.
Wenying Wang +8 more
wiley +1 more source
火灾下非均匀受火钢柱截面温度分布规律及其对钢柱抗火性能影响的研究现状
本文介绍了火灾下非均匀受火钢柱截面温度分布规律及其对钢柱抗火性能的研究进展和已有研究成果,包括钢柱截面非均匀温度分布产生的原因及截面温度非均匀分布对钢柱抗火性能的影响。钢柱截面不均匀温度产生的原因有:钢柱受到建筑填充墙保护,非4面受火;钢柱仅部分截面采用防火保护;受洞口非均匀火灾影响的建筑外框架柱;钢柱防火保护层不均匀或局部破损等。截面温度不均匀对钢柱抗火性能的影响包括:截面产生附加应力,使钢柱临界温度降低;钢柱截面不对称,发生弯扭破坏;钢柱产生热弯曲,以及破坏时可能出现的反向弯曲等 ...
潘锦旭, 张盛亚, 王培军
doaj
ABSTRACT Size‐controllable Sn nanoparticles are designed in this work via oxide doping to be uniformly embedded into flexible N‐doped carbon nanofibers, in which the agglomeration and migration of Sn are effectively restrained due to the suppressive effect of selected oxides, including SiO2, TiO2, and ZnO. Benefiting from unique merits of the embedment
Yu Xin +6 more
wiley +1 more source
本文介绍一种应用液晶热图显示技术半定量测定ZnO元件导电均匀性的方法.此法可用于单片筛选、並联配选等,从而为提高ZnO避雷器阀片导电均匀性增添了一种新的检测手段.ZnO元件的导电均匀性大致可分为两种类型.一类对通流容量影响较大,另一类对非线性(压比)、泄漏电流影响较大.
洪德祥 +4 more
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