Results 31 to 40 of about 14,496 (116)
Magnetization Dynamics Control for Noise Reduction in Fluxgate Sensors
ABSTRACT Fluxgate sensors are indispensable for the detection of weak magnetic fields. However, their noise performance remains constrained by an incomplete understanding of the interplay between the high‐frequency magnetization dynamics of the core material and the overall sensor behavior.
Chunyang Mu +11 more
wiley +1 more source
在文[l]基础上,采用改进高温弧放电室结构设计的途径,研制了适宜高温工作的固气两用冷阴极轴向引出改进型彭宁离子源.源结构与改进图1为高温用彭宁源剖面图.针对高温工作时关键部件形变对源性能的影响及国外该源型磁场冷却壁紧靠高温弧室,难以实现弧室料炉内高温的结构弱点,本源作的改进是:
郑思孝
doaj
ABSTRACT Precipitation of isothermal ω phase is an effective way to strengthen the metastable β‐Ti alloys but generally severely embrittles the materials by suppressing stress‐induced martensitic transformation and deformation twinning. Here, we architect heterogeneous structures with tailored ω phase in a metastable β‐Ti‐20Zr‐12Nb‐2Sn alloy via ...
Yang Liu +6 more
wiley +1 more source
ABSTRACT To meet the escalating demand for high‐performance LiCoO2 (LCO) cathodes, elevating the charging cut‐off voltage becomes highly imperative to achieve markedly enhanced specific capacities. However, high‐voltage operation is always accompanied by structural instability, notably deleterious bulk phase transitions and severe interfacial ...
Jiawei Mu +7 more
wiley +1 more source
因生产中使用的灰蓝釉配方均采用锆系釉,具有高温粘度大,烧成温度高的特点;而坯料烧成温度低,产品烧成温度不能太高,造成灰蓝釉产品因烧成温度低而出现窑后流痕、缩釉,桔釉、表面不平整等现象,影响产品的外观。所以,需研制与坯料烧成温度匹配的低温电瓷灰蓝釉配方。
杨娟
doaj
ABSTRACT Infrared (IR) stealth is crucial for improving the survivability of equipment. The growing demand for service in marine environments poses new challenges to the composition and structural design of existing IR stealth coatings. This study first investigates the effects of NaCl/water vapor corrosion on the IR stealth performance of GH3536 and a
Kang Wang +5 more
wiley +1 more source
基于火灾高温下空间网格结构的性能,本文根据欧洲规范了中高温下的钢材特性和国际标准升温曲线(ISO834),对单轴受拉焊接空心球节点高温下的性能进行了数值模拟,分析了空心球的温度场分布规律和极限耐火时间的影响因素。通过分析高温下空心球的应力和位移变化特征,确定了其破坏模式;结果表明钢管根部和赤道处是其高温下受拉承载力的薄弱环节。
邱林波, 薛素铎, 李雄彦, 冯淼
doaj
Microstructure Tailoring of Laser Powder Bed Fused Nb521 Alloy Toward Strength‐Ductility Synergy
ABSTRACT Niobium‐based refractory alloys are promising candidates for high‐temperature aerospace structures, yet their limited ambient‐temperature ductility and poor processability remain major barriers to broader implementation. Here, Nb521 alloy was fabricated by laser powder bed fusion (LPBF), and the effects of processing conditions and subsequent ...
Lele Qin +7 more
wiley +1 more source
目前食品工业和农业排放的有机废液,未经处理或很少处理就被排放到河流中或环境中,其污染给人造成了巨大的直接和间接的危害。与传统的处理高浓度废水工艺相比,利用高温菌进行的好氧处理系统具有一系列优点:(1)具有更快的生物降解速率,高温下微生物具有更高的活性,代谢速度更快;(2)更高的废水处理效率;(3)残留生物固形物浓度很低;(4)能有效地杀灭病原菌。但是由于高温改变了水体的生理生化性质,使得处理过程更为复杂。阐述了高温菌和高温菌耐热机制,以及在高温环境下处理有机废液的优缺点和动力学方程 ...
曹井国 +3 more
doaj +2 more sources
高压开关设备触头温度监测一直是电力设备故障诊断的重大课题之一,为了准确把握高压开关设备触头温度监测技术的研究现状及未来研究方向,文中将现有的高压开关设备触头温度监测方法进行了归纳分类——超温监测技术、电子式测温技术、红外辐射测温技术、红外热诊断技术、光纤光栅测温技术、光纤半导体测温技术及分布式光纤测温技术,并分别介绍了这些方法的基本原理和特点,梳理了各方法在高压开关设备触头温度诊断中的研究进展,指出了现有各测温技术优点与不足。最后,对高压开关设备触头温度监测还需解决的几个关键问题进行总结 ...
陈强 +4 more
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