Results 21 to 30 of about 574,150 (164)
Kinetic‐Controlled Growth of Iron Chalcogenide Nanosheets Featuring Besnus Transition
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Two‐dimensional (2D) Fe‐based nanosheets have sparked wide attention owing to exotic magnetism, superconductivity and topological phases. However, the synthesis of 2D FemXn (X = Te/Se/S, m, n: integer), typically in a non‐stoichiometric ratio, remains challenging because of narrow thermodynamic windows.
Hongmei Zhang +11 more
wiley +1 more source
, 2004 介绍了高温空气燃烧过程中蜂窝陶瓷蓄热体的工作原理和损毁原因，采用代数雷诺应力模型和修正的速度-压力耦合算法SIMPLEC，耦合蓄热体内流体的流动和换热过程，运用有限元分析方法，对蜂窝陶瓷蓄热体格孔壁面上的应力变化规律进行数值研究，并根据计算结果对操作参数进行了改进。结果表明，频繁的蓄热和释热过程变换，使得蓄热体格孔壁面交替地受到拉应力和挤压应力的作用。流体的流速越大，应力变化越大；换向时间越短，应力交替作用的影响越大。适当地调低烧嘴负荷，延长四通阀的换向时间，有利于提高蓄热体的使用寿命 ...
欧俭平 +3 more
core +1 more source
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT To overcome the strength–ductility trade‐off in fabricated Ti‐2Al‐2.5Zr alloy tubes, we systematically investigated the microstructural evolution and mechanical behavior throughout thermomechanical processing, including hot working (forging and extrusion) and cold multi‐pass rolling.
Yanlong Xia +7 more
wiley +1 more source
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT VO2 is a promising thermochromic material, but it is still limited by low transparency, weak solar modulation, and poor stability. Here, we develop a coordination‐compound‐derived strategy to construct a hierarchical BiVO4/VO2@BiVO4 film with a core–shell@nanosheet structure.
Huiyan Xu +11 more
wiley +1 more source
Shiyou jixie, 2015 根据铺管时的实际工况，建立了深水钢悬链线立管的焊接有限元模型，采用双椭球热源模型模拟焊接中的移动热源，运用Fortan语言对模型进行汇编，并运用DFLUX子程序进行ABAQUS的二次开发。在仿真中运用单元生死技术来模拟焊料单元的焊接参与情况，分别选取不同的焊接参数进行焊接模拟，利用控制变量法进行立管焊接残余热应力及其影响因素研究。研究结果表明，立管焊缝处单位体积的热输入量以及单位体积的受热时间是影响残余应力场的主要因素；立管的几何参数在影响焊接残余应力场的同时也影响残余应力场应力较高区域 ...
庹, 鑫, 段梦兰, 范, 晓, 刘秉奇
doaj
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT To address the demand for high‐temperature stability, broadband strong absorption, and multifunctional integration of electromagnetic wave absorbing materials in complex service environments, lightweight molybdenum disulfide (MoS2) decorated silicon carbide (SiC) nanofiber composite aerogels with a directional layered interconnected structure ...
Zhi Song +4 more
wiley +1 more source
四川大学学报. 自然科学版, 1999 根据热动力学基本理论，推导了平行一级反应的热动力学方程，建立了热谱解析平行反应动力学参数的数学模型，实验结果验证了方法的正确性．
谢家庆, 陈勇, 汪海东, 曾宪诚
doaj
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
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
热动力学研究的时间参量法(V)——等浓度三级反应的双谱解析法
四川大学学报. 自然科学版, 1999 根据热动力学基本理论，建立了一种新的热动力学研究法——等浓度三级反应的双谱解析法，该法利用两张谱曲线的特征热谱数据ａ＊ｍ，Δｍ和ｔｍ使能以简单的数学形式求解化学反应速率常数．通过对环氧氯丙环开环反应的热动力学研究 ...
谢家庆 +5 more
doaj