Results 31 to 40 of about 118,250 (162)

A Review on Cracking in Laser Additive Manufacturing of Nickel‐Based Superalloys: Types, Formation Mechanisms, and Suppression Strategies

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Nickel‐based superalloys (Ni‐based superalloys) have attracted extensive attention in laser additive manufacturing (LAM) due to their capability to directly fabricate complex and high‐performance structural components. However, the rapid melting and solidification inherent to LAM result in intense thermal cycling, which induces high residual ...
Tianxiang Lin   +9 more
wiley   +1 more source

电瓷材料的烧结性能研究

open access: yesDianci bileiqi, 2010
比较了用热膨胀仪和耐火度测定仪测定电瓷材料烧结温度的结果,并用热膨胀仪探讨了电瓷材料的烧结温度与升温速率的关系。研究表明:用热膨胀仪测定电瓷材料的烧结温度和烧结温度范围信息量大、准确度高、可靠性好。电瓷材料烧结温度Ts与升温速率V的对数满足线性关系,能较有效地评价在不同升温速率下的烧结温度。
周海球, 胡雪岩, 肖汉宁
doaj  

Radiant Cooling of Geometrically Simple Shape Bodies : Characteristic value varies with temperature [PDF]

open access: yes, 1958
In the present paper, the author tried to revise the Bachmann chart based on the Newtons\u27 cooling law. The author applied the approximate method owing to prof. Kawashimo (Tokyo Insti. of Techn.) by considering the variation of the Characteristic value
井村 定久
core   +1 more source

Thermally Driven Hydrogenation of CO2 to Light Olefins Over Hollow Cubic In2O3‐La‐ZIF‐8 Tandem Catalyst

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Thermally driven hydrogenation of CO2 to light olefins (C2=–C4=) using metal oxide‐zeolite tandem catalysts is an effective strategy for achieving carbon neutrality. However, progress in this area is constrained by zeolite pore transport limitations, acid‐site inactivation, and surface carbon poisoning.
Haifeng Tian   +10 more
wiley   +1 more source

氧化锌压敏电阻片电位梯度参数优化的实验研究

open access: yesDianci bileiqi, 2003
研究了制造过程中的升温速度、烧结温度、保温时间及冷却速度对氧化锌压敏电阻片电位梯度的影响,对氧化锌压敏电阻片的烧结工艺进行了优化,并从理论上探讨了升温速度、烧结温度、保温时间及冷却速度影响氧化锌压敏电阻片电位梯度的机理。试验结果表明,连续缓慢升温至1200℃保温3h,随炉冷至室温的烧成制度有利于获得优异的电性能。
严群, 唐俊, 陈家钊, 涂铭旌
doaj  

Bi/Bi2O3 Nanoparticles In Situ Embedded in Carbon as Anode Materials for Fast and Long‐Lasting Sodium–Ion Storage

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Bismuth anode materials are considered promising anode candidates for sodium–ion batteries (SIBs) due to their high theoretical capacity and appropriate working potential. Nevertheless, the significant volume expansion that occurs during the cycling process restricts its broader application in sodium–ion storage. Herein, Bi/Bi2O3 nanoparticles
Jiaju Lu   +3 more
wiley   +1 more source

線虫Caenorhabditis elegansの低温耐性における精子から神経へのフィードバック制御 [PDF]

open access: yes, 2017
全ての生物にとって、環境温度は生存と繁殖に非常に重要な環境情報である。そのため、全ての生物には環境温度に適応するための生体メカニズムが存在する。動物の温度耐性メカニズムには多くの組織が関与するが、それらの組織間の相互作用による統合的な制御メカニズムは詳細がまだ明らかとなっていない。そこで、シンプルなモデル動物である線虫Caenorhabditis elegansの低温耐性現象をモデルとして、動物の温度耐性メカニズムの解明を目指した。線虫の低温耐性とは、20℃で飼育した個体は2 ...
Satoru Sonoda, 園田 悟
core   +1 more source

Application‐Grade TiAl Single Crystal With Excellent Room‐Temperature Plasticity and Strength Prepared by Seeded Electromagnetic Confinement Directional Solidification

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT In this study, a newly developed seeded electromagnetic confinement directional solidification (EMCDS) technique was employed to fabricate large‐scale TiAl single crystal ingots with a diameter of 32 mm, overcoming the long‐standing size limitations that have hindered their industrial application.
Wei Wang   +9 more
wiley   +1 more source

基于IEC 60287和有限元法的高压海底电缆温度场分析方法

open access: yesGaoya dianqi, 2014
高压交联聚乙烯(XLPE)海底电缆结构复杂、敷设环境特殊,分析导体温度时需要考虑较多因素。笔者详细介绍了海缆分层及参数计算注意事项,参照IEC 60287标准进行计算,建立了海缆的精确热路模型,获得了海缆导体温度及各层温度的矩阵方程。采用有限元方法仿真了不同环境温度及负荷下的海缆温度场,环境温度在1424℃之间、电流在100500 A之间变化时,热路模型与有限元仿真获得的导体温度偏差小于0.3℃。仿真结果表明,热路模型得到的导体温度及各层温度关系的计算精度满足要求,且与外界环境温度无关 ...
段佳冰   +3 more
doaj  

燃料電池用触媒における白金とカーボン担体との相互作用に関する研究 [PDF]

open access: yes, 2018
学位記番号 ...
Inoue, Hideo   +2 more
core  

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