Results 31 to 40 of about 7,297 (118)

高强度绝缘子用高压铝质瓷 附视频

open access: yesDianci bileiqi, 1978
本文介绍了高铝瓷的组成及其机械、电气性能,为电气化铁道接触网提供了机电性能优异的棒形绝缘子。
Н.П.ЛЕЩЕНКО, 胡文
doaj  

Gd2O3掺杂对ZnO压敏电阻片电气性能的影响

open access: yesDianci bileiqi, 2021
研究了不同掺杂含量的Gd2O3对氧化锌(ZnO)压敏电阻片的电气性能、微观特性、物相特性和介电特性的影响。研究表明,掺杂Gd2O3对ZnO敏电阻片的电气性能具有重要影响,掺杂过量的Gd2O3对ZnO敏电阻片的晶粒生长具有抑制作用,锌填隙浓度提升,具体表现在电位梯度、泄漏电流提升而非线性系数大大减小。而掺杂少量的Gd2O3提升氧空位浓度,减小锌填隙浓度,进而抑制泄漏电流。此时掺杂量在0.5%(摩尔分数)Gd2O3电气参数分别为526 V/mm、15μA/cm2、非线性系数28 ...
赵霞   +6 more
doaj  

Sustainable Nanocellulose‐Based Materials for Environmental Remediation: Structure–Function Relationships and Applications

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Environmental pollution across water, air, and soil systems poses escalating threats to human health and ecosystem stability, driven by heavy metals, persistent organic pollutants, particulate matter (PM), bioaerosols, and toxic gases. Conventional remediation technologies often suffer from limited selectivity, insufficient efficiency, and the
Junjie Qi   +6 more
wiley   +1 more source

Template‐Assisted Construction of Atomically Dispersed Fe‐N‐C Catalysts With Dense Fe‐N4C Sites for Enhanced Oxygen Reduction Reaction

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Atomically dispersed iron–nitrogen–carbon (Fe‐N‐C) catalysts have emerged as promising alternatives for oxygen reduction reaction (ORR) owing to their highly atomic utilization. However, maintaining both Fe atomic dispersion and dense Fe‐Nx sites (typically below 2 wt%) in Fe‐N‐C catalysts is still a key challenge.
Lijuan Wang   +6 more
wiley   +1 more source

Overreliance on Orthographic Similarity in L2‐Japanese Conceptual Processing by L1‐Chinese Learners

open access: yesInternational Journal of Applied Linguistics, Volume 36, Issue 2, Page 1807-1820, May 2026.
ABSTRACT Orthographic and phonological similarities between first (L1) and second (L2) languages can facilitate L2 processing. Particularly, L1‐Chinese learners of L2‐Japanese can benefit from the shared morphosyllabic Chinese characters (Japanese kanji/Chinese hanzi) because of their similar orthographies.
Xuehan Zhao, Kexin Xiong, Sachiko Kiyama
wiley   +1 more source

利用煤气隧道窑炉烧成ZnO电阻片的初步试验

open access: yesDianci bileiqi, 2012
利用煤气隧道窑炉进行了烧成ZnO电阻片的试验,对比分析了煤气隧道窑炉和推板式电加热窑炉烧结对ZnO电阻片性能的影响。通过调整煤气隧道窑炉烧结曲线对ZnO电阻片各项性能的参数,得出:煤气隧道窑炉的烧结气氛基本适合ZnO电阻片的烧结,不仅保证ZnO电阻片2ms方波、4/10大电流冲击、8/20冲击残压和老化性能等参数,而且成本仅是电热元件窑炉电耗成本的1/5。
傅鹏立, 黄海
doaj  

In2O3掺杂对低压ZnO压敏电阻显微结构及电气性能的影响

open access: yesDianci bileiqi, 2023
提出了掺杂In2O3对低压ZnO压敏电阻显微结构的影响及对其综合电气性能的研究。通过改变In2O3的用量,同时借助相关分析方法对压敏电阻的显微结构和电气性能进行综合分析。最终发现,随着In2O3含量的增加,低压ZnO压敏电阻的电气性能得到提升,但是过量的In2O3却会使其残压比和正反极性增加。I-3电阻片具有最佳的电学性能,其电位梯度为115.5 V·mm-1,漏电流为1.34μA,非线性系数α为68.1,以及残压比为2.20。其耐8/20μs、10 kA浪涌冲击正面变化变化率为-0.2%,反面变化率 ...
劳学斌   +6 more
doaj  

Recent Advances in Piezocatalysis and Piezo‐Photocatalysis in Energy and Environment: Materials, Design, and Applications

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Piezocatalytic technology utilizes mechanical strain or stress‐induced piezoelectric phenomena to produce robust internal electric fields, markedly improving the separation efficiency of e−‐h+ pairs. This method has emerged as a focal point in catalysis by removing reliance on conventional light or electrical energy via its mechanical‐to ...
Yue Zhou   +5 more
wiley   +1 more source

降温速率对直流氧化锌电阻片电气性能影响的探究

open access: yesDianci bileiqi, 2019
论述了直流氧化锌压敏电阻片烧结过程中降温速率对其电气性能的影响,从直流电阻片的老化、伏安特性、温度系数、荷电率、吸潮性等方面对直流电阻片的电气性能进行了探究。实验结果表明:从高温点降到970℃,平均降温速率为27℃/h,从970℃降到870℃,平均降温速率为40℃/h,从870℃降到840℃,平均降温速率15℃/h,直流电阻片的各项电气性能参数较优。
田冰, 朱成洋, 郭向洋
doaj  

Ultrahigh‐Strength Soft‐Magnetic NiFeCoAl Multi‐Principal Element Alloys Enabled by Multiscale Heterostructure Design

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Soft‐magnetic materials (SMMs) are indispensable for electrification and sustainable energy systems, yet their inherent mechanical fragility fundamentally limits applications under severe mechanical stresses. Enhancing the yield strength of SMMs is essential to prevent the degradation in magnetic performance and failure from plastic ...
Nairan Wang   +6 more
wiley   +1 more source

Home - About - Disclaimer - Privacy