Results 31 to 40 of about 10,465 (119)
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT NiTi shape memory alloys (SMAs) show excellent performance in vibration damping and corrosion resistance. However, due to low hardness and lack of self‐lubrication, they suffer severe friction and wear during service. Although various strategies including doping and heterostructure design have been proposed, the effects are unsatisfactory.
Huwen Ma +13 more
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Dianci bileiqi, 1993 用户供电可靠性除其他因素外在很大程度上决定于输电的可靠性.架空线路和变电站户外绝缘子的污秽特性对输电可靠性有重大意义.为了改善绝缘的不足往往增大绝缘子长度,因为还没有具有足够性能的优化结构的绝缘子.原西德110～380kV架空线路和变电站用绝缘子基本上采用长棒形绝缘子,其结构形式决定于结构长度、放电电压、爬距、绝缘子直径 ...
罗丁
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Semiconductor photocatalysis represents a pivotal frontier in the quest for sustainable energy and environmental remediation. Among the diverse catalytic materials, Bismuth Oxychloride (BiOCl) has emerged as a particularly promising candidate due to its unique layered structure, featuring [Bi2O2]2+ layers intertwined with halogen ions, which ...
Liu Han +5 more
wiley +1 more source
Dianci bileiqi, 2015 为了解决雷暴云电荷结构的反演问题,在分析球对称电荷模型的基础上,推导了一个非线性方程组,提出了一种利用地面电场资料对雷暴云电荷结构反演的混合算法。该算法以粒子群算法为基础,针对方程组显著的非线性,构造了压缩因子φ,将模拟退火算法嵌入带压缩因子的粒子群算法中,并结合地面多站电场资料,对雷暴云的电荷结构进行了反演。反演得到该雷暴云发展成熟时,雷暴云底高度均值1 650 m,云底存在一定强度的正电荷,云内为强度较大的主负电荷区和主正电荷区,电荷区厚度均值为788 m。结果表明 ...
宋晨曦, 行鸿彦, 张欣, 赵洋
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Emerging MBenes for Energy Technologies
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT The escalating global demand for sustainable energy is driving the search for transformative materials that transcend the limitations of conventional systems. Two‐dimensional (2D) transition metal borides (MBenes) have recently emerged as a compelling class, distinguished by unique electronic structures, tunable surface chemistry, and ...
Yingrui Ding +5 more
wiley +1 more source
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT The development of lightweight, high‐attenuation, and broadband carbon‐based electromagnetic wave absorbers is hindered by the intrinsic trade‐off between impedance matching and dielectric dissipation. Herein, we report a facile and scalable synthesis of N‐doped lignin‐derived interconnected porous carbon (Nx‐LIPC) via hydrogen‐bond self ...
Bin‐Peng Zhang +7 more
wiley +1 more source
Gongye shui chuli, 2007 介绍了焦化废水的电化学处理技术的现状，并结合近年来环境电化学技术的前沿研究，提出了焦化废水电化学处理技术的发展方向。结合量子力学和结构化学理论，重点分析了采用极端的电化学条件来改变分子的几何结构和电子云结构，从而达到降解焦化废水中难降解有机物的可能性。
吴高明 +4 more
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Dianci bileiqi, 2021 与理论计算相结合的材料设计是现代材料科学发展的一个重要方向。基于密度泛函理论的第一性原理,在ZnO非线性电阻的设计与研究领域的应用以及最新研究进展进行了梳理。共分5个方面:1)第一性原计算的背景; 2) ZnO晶体及其表面的电子结构; 3) ZnO晶体本征缺陷及掺杂的电子结构; 4)双晶ZnO晶体界面的电子结构; 5) Bi偏析ZnO晶体界面的电子结构,即双肖特基势垒(n-p-n)。随着相关理论和计算方法的发展,以及计算机性能的不断提高,对ZnO非线性电阻的基本电子特性可以通过计算直接获得 ...
汤霖 +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
Gaoya dianqi, 2019 动车组车顶受电弓支柱绝缘子高压侧金具结构会影响绝缘子表面电场强度的分布均匀度,电场不均匀会造成绝缘子闪络频次增加。为此,基于静电场理论,联合Solidworks软件和有限元软件静电场模块仿真分析了金具结构对绝缘子附近空气域及绝缘子表面电位、电场分布变化的影响,优化设计金具结构并试验验证其效果。研究结果表明,现有连接方式下高压侧金具连接处附近场强分布不均匀,优化后的连接金具可有效降低局部区域电位梯度,电位梯度的降低有助于减小闪络故障的发生频次 ...
任丽苗 +4 more
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