Results 31 to 40 of about 1,047,854 (148)
, 1991 金属材料的高温动态力学性能是材料科学领域中的重要方面。本文介绍LY-12合金铝在常温至450℃的温度区间内和动载下(应变率为 10~3/秒),材料弹性模量的研究。此项研究采用的试验装置为一维Hopkinson压杆及管式高温炉。应用一维弹性应力波传播理论,测得LY-12铝试件在不同温度T条件下的声速c(T),按照c(T)=[E(T)/ρ(T)]~(1/2),获得杨氏模量E(T ...
王春奎, 刘小苹
core +1 more source
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Developing rapid, precise gas sensors for Listeria monocytogenes (LM) biomarker detection faces challenges due to suboptimal gas‐solid interactions. Herein, we report the rational synthesis of amino‐functionalized mesoporous SiO2 hollow nano‐doughnuts (MS‐2‐NH2‐2) via modification with (3‐aminopropyl) trimethoxysilane (AAPTMS), which enables ...
Xingyu Wang +7 more
wiley +1 more source
Inverse Thermal Softening Behavior in a High‐Entropy Alloy Under Various Strain Rates
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Although face‐centered cubic high‐entropy alloys (HEAs) have received extensive attention and in‐depth research, most existing studies focus on single temperature or strain rate conditions, lacking systematic investigations into deformation mechanisms under extreme thermomechanical coupling environments.
Zhi Wang +6 more
wiley +1 more source
Haiyang gongcheng zhuangbei yu jishu, 2022 南海东部海域某深水气田属于高温气田,受高温天然气的影响,完井管柱和生产管柱产生轴向变形,导致采 油树升高,引起井口管线应力变形,严重影响生产安全。通过减小产量可以降低温度对完井管柱和生产管柱的影 响,进而减小采油树升高幅度。降产控制采油树升高会导致产量缺口,且不利于气田协同开发。针对该问题,本文 通过神经网络方法找到引起采油树升高的主控因素。在此基础上,本文通过研究天然气自身特性,提出了节流降 压降温方案,建立了井筒温度模型,设计并制造了适用于高温气井的井下节流工具。该工具在现场成功实施后,有 ...
doaj
Dianci bileiqi, 2021 红外测温凭借其高效、精确等优点,在特高压避雷器带电检测中发挥了重要作用,然而避雷器表面温度会受到风速、光照等外界因素的影响,给红外测温及故障诊断带来了一定的困难。笔者基于有限元原理建立了特高压交流避雷器热电耦合的三维温度场仿真模型,并通过现场温度试验验证了模型的合理性,从而利用该模型对不同风速、光照影响下的避雷器温度分布进行仿真分析,结果表明:风速增大加强了空气对流散热,使得避雷器内部缺陷发热导致的表面最高温度下降,温升减小;避雷器表面温度随太阳辐射强度的增大而升高,且向阳侧高于背阳侧,但温升值变化不大。
史晓航 +4 more
doaj
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Balancing low iridium dosage and robust anodic stability remains a critical hurdle for practical proton exchange membrane water electrolysis (PEMWE). Although IrRuOx offers a cost‐effective alternative, current systems still suffer from the dual dilemma of excessive noble‐metal reliance and inadequate long‐term durability. Herein, we developed
Hang‐Xing Ren +10 more
wiley +1 more source
, 2011 在学术带头人俞鸿儒院士的学术思想指导下，解离气体动力学课题组研制成功了JF-14高温燃气激波风洞。本文简述了在风洞运行中，为了提高流场品质、保证重复性，在膜片技术、充气系统、点火系统等方面要重视的几个问题。 关键词 高温燃气、激波风洞、爆轰驱动 ...
董志成
core +1 more source
四川大学学报. 自然科学版, 1988 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
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT To achieve high‐value utilization of spent catalysts, we recovered copper (Cu) from Cu‐bearing spent catalysts via acid‐base leaching to fabricate CuO and systematically studied how calcination temperature affects their microstructure and humidity‐sensing performance. Characterizations show that CuO‐500 (calcined at 500°C) has a large specific
Cong Liang +9 more
wiley +1 more source
, 2017 本实用新型公开了一种高温FDM3D打印设备，具体地，本实用新型的打印设备包括加热及温度控制系统、保温系统、散热系统和运动控制系统；其中，所述打印设备的部件包括打印头、成型基板和成型室，设有独立的控制电路；并且，所述打印头是由陶瓷发热体构成的，以及所述加热及温度控制系统还包括给所述成型基板加热的陶瓷发热板。本实用新型的打印设备具有打印温度高，能满足绝大部分高强度耐高温的高性能工程塑料的打印，同时利用成型室的保温功能 ...
程昱川 +5 more
core