Results 1 to 10 of about 531,469 (151)

电解纯化对Inconel 600合金在LiCl-KCl熔盐中腐蚀影响

open access: yesHe jishu
LiCl-KCl共晶熔盐为乏燃料干法后处理中电解精炼过程常用的电解质,其对结构材料的腐蚀主要受熔盐中杂质的影响,通过熔盐纯化降低其腐蚀性是解决干法后处理材料腐蚀问题的重要手段之一。研究中使用电解法对LiCl-KCl盐进行纯化,通过循环伏安电化学方法监测纯化过程,并使用电感耦合原子发射质谱(Inductively Coupled Plasma Mass Spectrometry,ICP-MS)测量LiCl-KCl盐纯化前后杂质元素含量。同时在773 K、氩气环境下开展Inconel ...
童 阳   +5 more
doaj   +2 more sources

典型直流接地极材料在海洋环境中的腐蚀特性

open access: yesDianci bileiqi, 2022
为掌握直流接地极在海洋环境下的腐蚀特性,进行了典型直流接地极材料在模拟海水和自然海水、海水浸泡沙、海水浸泡焦炭环境下的自然腐蚀和电解腐蚀试验。结果表明:接地极在海水浸泡焦炭中的自然腐蚀最严重,在海水中次之,在海水浸泡沙中最小。在通流时,除高硅铬铁外接地极在海水和海水浸泡沙中的电解腐蚀速率相近,在海水浸泡焦炭中的电解腐蚀速率明显减小;且随着含海水量的增加,焦炭对接地极电解腐蚀的减缓作用逐渐减弱。对不同接地极材料,焦炭的保护系数不同。典型接地极材料中,海洋环境下耐蚀性能最强的是MMO、钛镀铂,其次是石墨 ...
童雪芳, 谭波, 李冠华
doaj  

SF6断路器开断过程中固体分解产物研究

open access: yesGaoya dianqi, 2022
研究固体分解产物是探明SF6断路器金属有机材料腐蚀机制的重要科学手段。文中以40.5 k V SF6断路器为实验对象,研究了不同电流大小、极性、开断次数下触头和喷口本体材料电热腐蚀程度的影响。开断实验后对断路器进行解体发现,大电流开断导致动静弧触头的腐蚀,正极性开断加速了动弧触头的腐蚀,在触头表面及灭弧室底部有固体分解产物产生。利用扫描电子显微镜(SEM)、X射线能谱(EDS)、粉末晶体衍射(XRD)技术分析了固体分解产物的化学组成,发现触头表面固体分解产物包括Cu2O、Cu2S ...
杨韧   +5 more
doaj  

基于支路电压扰动的接地网腐蚀缺陷诊断研究

open access: yesGaoya dianqi, 2021
对接地网进行准确的腐蚀诊断是电力工程中十分关注的问题。为了解决接地网腐蚀诊断过程中计算方程组欠定所导致的诊断精度不高,效果不理想的问题,文中提出一种基于支路电压扰动的接地网腐蚀诊断方法,该方法通过接地网腐蚀前后支路电压的扰动实现腐蚀缺陷支路的定位和腐蚀程度的判断。文中首先理论分析接地网支路电压对支路电阻的灵敏度;其次,利用支路电压扰动特性,建立接地网腐蚀诊断模型,得出支路电压扰动峰值位置、大小与接地网腐蚀支路位置和腐蚀程度的映射规律;最后,实验验证了该方法能够对接地网的支路腐蚀进行有效的诊断。
董曼玲   +6 more
doaj  

Unveiling Temperature‐Dependent Corrosion Behaviors of FeNiCrMoCBY Amorphous Alloy Coatings In Spent‐Fuel Storage Environments

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT A comparative study was performed to elucidate the temperature‐dependent corrosion kinetics and the semiconductor/structural characteristics of the passive film formed on Fe40Ni7Cr17Mo12C13B9Y2 (at%) amorphous alloy coatings. The results indicate that increasing temperature accelerates the corrosion kinetics of the coating.
Yang Lv   +12 more
wiley   +1 more source

Synergy of Built‐In Electric Field and Surface Reconstruction of Co–NiS/Ni3S2 Nanowires for Enhanced Bifunctional Activity and Anti‐Chlorine Corrosion in Seawater Electrolysis

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT The development of efficient and stable bifunctional electrocatalysts is a key challenge for the industrialization of hydrogen production by water electrolysis. In this work, Co‐doped NiS/Ni3S2 heterostructured nanowire arrays (Co–NiS/Ni3S2 NA) were successfully constructed by precisely modulating the phase‐selective behavior of nickel ...
Xing‐Hang Liu   +2 more
wiley   +1 more source

Bidentate Coordination by Graphene Oxide‐Enhanced γ‐Cyclodextrin for Synergistic Solvation and Stabilization of the Zn Anode

open access: yesRare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT With the rapid development of the energy storage industry, aqueous zinc‐ion batteries (AZIBs) have attracted considerable attention in the field of energy storage because of their inherent advantages, thereby emerging as a promising research direction with significant potential.
Lingjiao Fu   +8 more
wiley   +1 more source

Yttrium Addition Co‐Enhances the Plasticity and Corrosion Resistance of TiB2‐Refined Al‐Mg‐Zn Alloys

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT To address the degradation of corrosion resistance induced by Al‐5Ti‐B grain refiner during the strengthening of Al‐Mg‐Zn alloys, this study innovatively employed a rare earth element yttrium (Y) alloying strategy to achieve synergistic enhancement of mechanical strength and corrosion resistance.
Wen‐Tao Qin   +9 more
wiley   +1 more source

特高压直流瓷绝缘子金具电解腐蚀问题研究

open access: yesDianci bileiqi, 2015
2011年3月楚穗直流输电线路瓷绝缘子的铁帽出现了电解腐蚀现象,腐蚀部位主要集中在负极性侧V型串瓷绝缘子的下檐。对取自楚穗直流的瓷绝缘子进行钢脚解剖检查,发现正极性侧"V"形串绝缘子钢脚的保护锌套也存在不同程度的电解腐蚀现象。针对±800 kV楚穗直流运行瓷绝缘子金具腐蚀的基本状况,从电解角度分析了直流瓷绝缘子金具出现腐蚀的原因,提出了金具电解腐蚀的模拟试验方法,对绝缘子金具电解腐蚀的危害进行了试验研究,并提出了金具电解腐蚀的抑制措施。研究结果表明:电解腐蚀是导致绝缘子金具出现腐蚀的主要原因 ...
李锐海   +4 more
doaj  

高压直流瓷和玻璃绝缘子金具电解腐蚀电流与电荷量的测量与分析

open access: yesGaoya dianqi, 2018
金具电解腐蚀是高压直流输电线路上瓷和玻璃绝缘子一直存在的问题。针对用于表征腐蚀速率和发展程度的腐蚀电流与电荷量,分析了其测量原理与测量实现方法,研制了高精度宽范围的腐蚀电流测量装置并进行测量精度检验。采用盐雾法对绝缘子进行电解腐蚀试验,获得试验过程中腐蚀电流和电荷量,对数据进行了对比与统计分析。试验结果表明,绝缘子在盐雾环境中发生电解腐蚀的电流呈现波动性和随机性,绝缘子间的腐蚀电荷量呈现差异性,差异与绝缘子悬挂方式无关。此外,开发了一套腐蚀电流与电荷量在线监测系统并在±500 ...
郭晨鋆   +3 more
doaj  

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