Results 21 to 30 of about 435,678 (145)
Atom Probe Tomography‐Based Analysis of Residual Trace Elements in Advanced Metallic Materials
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Residual trace elements inherited from raw materials strongly influence the mechanical and environmental performance of advanced metallic alloys and recycling materials due to preferable boundary/interface segregation and resultant embrittlement effects, yet their parts per million level concentrations pose significant challenges to ...
Congcong Li +17 more
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT The electrocatalytic water splitting technique was widely taken for hydrogen evolution, due to its cost‐effectiveness and environmental friendliness. The design of electrode material as electrocatalysts play a key role in achieving high efficiency.
Yaling Zhu +5 more
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Lightweight and lead‐free radiation shielding materials remain urgently needed. This work designed a fluorite high‐entropy oxide (FHEO) system through a combined computational–experimental route. Density functional theory based on special quasi‐random structures was used to identify thermodynamically stable fluorites from a wide compositional ...
Xiangjie Duan +9 more
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The growing concern over human health issues, driven by increasingly severe electromagnetic pollution from 5G communication, has made the urgent development of high‐performance electromagnetic wave (EMW) absorbing materials. Although carbide‐based materials are promising because of their conductive and polarization losses, existing single ...
Chenqiang Duan +9 more
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, 2001 针对单轴压缩实验，根据颗粒增强金属基复合材料中颗粒和基体两相的局部变形协调条件，并通过简单的位错模型，确定出与变形协调相应的几何必需位错密度，进而导同一种颗粒强化-应变梯度律。从中可以清楚地看出，颗粒增强金属基复合材料的强化由材料的微结构特征几何参数l和基体应变梯度联合控制。对于颗粒含量一定的复合材料，颗粒越小，应变梯度越高，强化效果越好。这一结果揭示了，颗粒强化及尺寸效应主要是通过应变梯度效应来表现的。这也同时说明 ...
白以龙, 戴兰宏, 凌中
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Giant Tunability of Individual Magnetic Skyrmion Size via an Oscillating Local Magnetic Field
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Magnetic skyrmions hold great promise as memory and computing elements in future spintronic devices. Despite the demonstration of various devices, techniques for addressable and high‐precision manipulation of individual skyrmions remain scarce.
Cai‐Hong Xie +13 more
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Adaptive Chemical Strain Boundary in Freestanding BiSmFe2O6 Double‐Perovskite Membranes
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Double‐perovskite multiferroic systems have attracted increasing attention due to their highly tunable structures and chemical adaptability. The uncontrollable performance changes caused by the release of boundary conditions are an important factor hindering the development of freestanding membranes.
Jie Tu +14 more
wiley +1 more source
Guangtongxin yanjiu, 2010 通过数值求解非线性薛定谔方程,研究了三阶色散效应对基孤子脉冲在单模光纤中传输的影响。结果表明,在三阶色散作用下,基孤子脉冲在传输过程中被展宽,峰值能量逐渐减小,脉冲形状发生畸变,脉冲的中心偏向一侧,并形成非对称的拖尾振荡结构;当与二阶色散共同作用时,三阶色散引起的脉冲振荡会变缓。考虑非线性效应后,在一定程度上补偿了由于色散效应导致的峰值功率的减小,同时抑制了非对称拖尾结构的产生。
林传亿, 余向阳
doaj
, 2010 目的:研究碳离子辐照诱导淋巴细胞染色体畸变的时间和剂量效应。方法:以加速的碳离子为辐射源,吸收剂量分别为2、4Gy的碳离子辐照人外周血淋巴细胞后,分别培养48、72、84h后收集细胞,用姊妹染色单体区别染色法分析淋巴细胞第一次分裂中期染色体畸变,以研究畸变的时间效应;吸收剂量为0、0.5、1、2、3、4Gy的碳离子辐照人外周血淋巴细胞后,培养48h,用常规染色体技术研究碳离子辐照诱导淋巴细胞染色体畸变的剂量效应。结果:辐照后分别培养48、72和84h得到的双着丝粒和着丝粒环畸变("双+环"畸变 ...
李文建 +3 more
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Research on the Evolution of Subsequent Yield Surfaces in Stress Space and Strain Space
, 2014 屈服面的位置和形状直接影响材料塑性应变的确定。考虑滑移是晶体的主要塑性变形机制,介绍了晶体塑性理论的推广——滑移构元模型,研究了应力空间和应变空间的后继屈服面演化。给出了确定应力空间和应变空间屈服面的数值计算方法,提出一种考虑屈服面畸变变形的混合硬化假设,可以描述应力空间和应变空间后继屈服面的移动和畸变变形。通过计算1100-O铝在纯扭转和拉扭组合加载下(σ_(11) -σ_(12))空间和(ε_(11) -γ_(12))的后继屈服面演化,与已有实验结果吻合。研究结果表明,无论是在应力空间还是应变空间 ...
刘芳, 付强, 陈岑
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