Results 51 to 60 of about 13,394 (213)

Oxygen Vacancies Modulation of Ammonium Tungsten Bronze by NH4+‐Assisted Heat Treatment for Highly Sensitive Detection of NO2

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Introducing oxygen vacancies has emerged as an essential strategy to affect the sensing properties of nanomaterials. However, existing methods for manipulating oxygen require high cost, complex operation, and harsh conditions. Herein, a simple NH4+‐assisted heat treatment approach was designed to regulate the concentration of oxygen vacancies ...
Qiu‐Yue Zheng   +10 more
wiley   +1 more source

非灌溉季节施加生物炭对滴灌棉田土壤结构及水热特性的影响

open access: yesShuitu Baochi Xuebao, 2022
为探究在非灌溉季节施加生物炭对滴灌棉田耕层土壤水热特性和三相结构的调控效应。设置生物炭15(B1),30(B2),45(B3),60(B4),0(B0) t/hm25个施加量,分析其对新疆滴灌棉田非灌溉季节耕层土壤(0—40 cm)三相结构、总孔隙度、土壤温度和土壤含水率的影响。结果表明:与对照处理相比,施炭处理使土壤固相体积降低2.58%~10.74%,总孔隙度增加3.38%~12.05%;同时,施炭处理的融后土壤质量含水率较对照处理提高1.07%~2.65%;施炭处理的土壤导热系数降低 ...
邹瑞晗   +4 more
doaj  

Constructing Serrated Boride Composite Layer for Enhancing Wear Resistance of Ti6Al4V Alloy

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Appropriate configuration combined with strong interface bonding is the essential requirement for developing high wear‐resistant coatings. Herein, based on the powder‐pack boriding process, the properties of Ti6Al4V alloy are effectively improved by constructing a serrate tribological boride composite layer.
Ying Wu   +9 more
wiley   +1 more source

金属化膜电容器层间压强计算

open access: yesGaoya dianqi, 2007
金属化膜电容器的优点是储能密度高、可靠性高及成本低,其自愈特性和端部通流能力与层间压强有关。笔者用理论方法计算了层间压强,并根据液体表面产生附加压强原理,分析和计算了金属化膜电容器热处理前后层间压强的变化。计算结果表明,电容器的层间压强是由里向外是递减的,经热处理后的压强是热处理前压强的3倍以上。
孔中华   +4 more
doaj  

Controllable Fabrication and Their Lithium Storage and Catalytic Properties of ZnO-Based Hybrid Hollow Micro-nanostructures [PDF]

open access: yes, 2015
过渡金属氧化物作为锂离子电池负极材料时具有比传统的石墨负极更高的理论容量和更好的安全性能,在过去的一二十年里备受研究人员的青睐。在各种过渡金属氧化物中,ZnO除了具有原料丰富、加工成本低廉、无毒性、生物兼容性好、简单易制、形貌多样等优点外,作为锂离子电池负极材料时,还能通过转移反应和合金化反应贡献出高的理论容量(978mAhg-1),这几乎是石墨负极理论容量的三倍,是一种非常有应用前景的负极材料。但是到目前为止相比于NiO、Co3O4等过渡金属氧化物,ZnO微纳米材料的锂存储性能研究较为少见 ...
谢清水
core  

Scalable Synthesis of Ultrathin Silica Nanosheets for Applications in Thermal‐Management Aerogels and Flexible Composite Films

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Silica nanosheets (SiO2 NSs) hold great promise for advanced thermal protection applications because of their exceptional thermal and chemical stability. However, their development has been hindered by challenges in scalable synthesis and structural integration for specialized applications.
Qun‐Yao Yuan   +3 more
wiley   +1 more source

Filling Uniformity of AgNPs in EMI Shielding Patch Regulated by Surface Morphology

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Silver nanoparticles (AgNPs) are extensively employed for electromagnetic interference (EMI) shielding owing to their remarkable conductivity, and are commonly incorporated into polymer matrices. Therefore, the uniformity of the AgNP distribution within the polymer matrix is a crucial factor that affects the EMI shielding performance.
Jie Yang   +8 more
wiley   +1 more source

基于流固双向耦合的GIS气室微水处理仿真研究

open access: yesGaoya dianqi, 2016
GIS气室微水超标严重影响其内绝缘性能,探索一种工艺简单、效率高和可靠性强的微水超标处理方法,有利于保证电力系统的安全运行。文中提出了一种新的高压GIS气室微水超标加热处理方法;针对GIS断路器和电流互感器等电器设备气室,探讨了加热装置、导热媒介、气室内设备之间的相互作用关系,构建了该处理方法中流固双向耦合的热力学数学模型,分析了流体和固体的双向耦合性质;基于Ansys仿真软件进行了GIS气室微水超标加热处理方法的热流固双向耦合仿真,计算出气室壳体及气室气体的对应温升 ...
李洪渊   +6 more
doaj  

Thermohydrogen‐Induced α→β Phase Transition and Interfacial Aggregation: A Diffusion Bonding Mechanism for Ti65 Alloy at Low Temperatures

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Diffusion bonding (DB) of near‐α titanium alloys requires high temperatures, which can cause grain coarsening, structural deformations, and degradation of the workpiece's mechanical characteristics. In this study, thermal hydrogen processing (THP) was applied to Ti65, combined with selective magnetron sputtering of a Ti‐Al thin film to promote
Liang‐Wei Kang   +9 more
wiley   +1 more source

烧结温度和热处理对ZnO压敏陶瓷的影响

open access: yesDianci bileiqi, 2004
首次提出用"微观网络"的分析方法来研究ZnO压敏陶瓷的相结构和电性能,并对其"微观网络"中的两个节点即烧结温度和热处理温度进行研究,结果显示:随着烧结温度的升高,ZnO压敏陶瓷的压敏电压不断下降,非线性系数则不断提高,至1250℃达到最大值。这主要与晶粒的大小、均匀度以及晶界势垒的高度有关。对于热处理温度,研究结果表明:在600℃下的热处理能大大提高ZnO压敏陶瓷的稳定性。通过对"微观网络"中烧结温度和热处理温度的研究,可以确定较佳的工艺参数。
侯清健, 徐国跃, 赵毅, 唐敏
doaj  

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