Results 11 to 20 of about 274,262 (149)
Zhongguo youzhi, 2023 油脂及富含油脂食品（巧克力、冰淇淋、人造奶油等）的物理特性很大程度上取决于其脂肪的结晶状态。油脂结晶改良剂的添加可以影响底物油脂的结晶行为从而改变产品的质构，进而调控油脂结晶，使其应用于各种产品和工艺中。分别对单甘酯、甘二酯、甘三酯、蔗糖酯、聚甘油脂肪酸酯、磷脂、无机物等作为结晶改良剂对不同底物油脂的结晶调控效果进行综述，并对现阶段结晶改良剂的作用机制的研究成果进行了总结。结晶改良剂的种类和用量显著影响底物油脂的结晶行为，结晶改良剂与底物油脂中主要甘三酯的匹配性是调控底物油脂结晶的关键 ...
张露，张晴 ZHANG Lu，ZHANG Qing
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Gongye shui chuli, 2011 采用静态实验方法对硫酸钙的结晶过程进行了研究，考察了温度、Ca2+和SO42-初始浓度、其他成垢离子及阻垢剂对硫酸钙结晶过程的影响。结果表明，升高温度会缩短硫酸钙结晶初期的“诱导期”，并增加晶体成核速率在结晶过程中的控制比重；Ca2+和SO42-初始浓度越大，硫酸钙结晶速度越快；HCO3-和 PO43-影响硫酸钙结晶过程的原 因在于溶液离子强度的变化使硫酸钙的溶度积发生改变； 阻垢剂对硫酸钙结晶的抑制作用主要以抑制晶体成核过程为主。
徐海, 郦和生, 王岽
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Size effect on crystallite microstructure in nanocrystalline brookite-based TiO2(纳米板钛矿基TiO2的晶粒尺寸效应)
Zhejiang Daxue xuebao. Lixue ban, 2001 借助精确的X射线衍射测量，结合独立衍射峰对不同晶粒度纳米板钛矿基TiO2样品中板钛矿和金红石相的微结构参量进行了较细致的研究，给出了标征物相、晶面指数(hk1)和晶面间距dhkl值，详细分析结果的系列XRD谱，并得到晶面间距、晶格常数、轴比、晶胞体积等参数数值及其相对常规粗晶的变化情况，从而初步揭示出其晶粒微结构的尺寸效应.作者首次发现，纳米板钛矿基TiO2样品中板钛矿和金红石相晶粒均存在着非单调的各向异性晶格畸变.
LIUXiang-dong(刘向东) +4 more
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, 2016 本工作采用NPT系综下的分子动力学模拟[1]研究了Hertzian软球[2]的结晶过程。我们观察到,是键取向有序性(序参数Q[6)3]而不是平移有序性(数密度)在结晶过程中起主导作用。结晶形成的晶型由所处的状态点决定。当过冷度较小(温度较高)时,体系趋于结晶成核形成亚稳态的bcc占优势的结构,这可以视为Alexander-Mc Tague机制[4]在起作用。反之,当过冷度较大(温度较低)时,在小的晶核中发现fcc结构占优势。前驱体作为晶体形成的前期相对较有序结构[5],附着在晶核的外围 ...
徐升华, 欧阳文泽, 孙祉伟
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Rare Metals, Volume 45, Issue 11, November 2026.ABSTRACT Wide‐bandgap perovskite solar cells (WBG PSCs) have attracted significant attention as the top cell in tandem perovskite solar cells. However, the complexity of the composition leads to challenges such as defect formation and phase separation during the crystallization process, which impose significant constraints on the power conversion ...
Suzhen Liu +9 more
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Rare Metals, Volume 45, Issue 11, November 2026.ABSTRACT A thermomechanical strategy based on rolling‐annealing cyclic (RAC) was developed to regulate defect architecture and precipitation behavior in a (FeCoCrNi)94Al3Ti3 high‐entropy alloy. Intermediate annealing during rolling enables progressive grain refinement and introduces a high density of twins, stacking faults, and dislocations, forming a ...
Jiale Man +6 more
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Rare Metals, Volume 45, Issue 11, November 2026.ABSTRACT The exceptional ductility of face‐centered cubic high/medium‐entropy alloys (H/MEAs) is counterbalanced by intrinsically restrained yield strength, fundamentally compromising their application in structural and functional materials. Here, a novel carbon (C)‐driven precipitation strategy is introduced to promote discontinuous precipitation (DP)
Hao Feng +10 more
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Rare Metals, Volume 45, Issue 11, November 2026.ABSTRACT Atomically thin two‐dimensional (2D) materials have emerged as ideal candidates for realizing high‐density, fast switching, and energy‐efficient memristors. However, ultrathin memristive interlayers, particularly at the atom scale, typically suffer from poor endurance and significant variations.
Yujie Bai +12 more
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, 1999 采用Hopkinson杆加载技术和帽状试样，研究Monel合金在ε↑._s≈4.3×10~5s~(-1)的高应变速率条件下的应力－应变关系及塑性变形行为。实验及计算结果表明，塑性区（简称剪切带）内温度随剪切应变增加呈线性升高。透射电镜证实剪切带组织发生了动态再结晶，再结晶晶粒约为170nm。分析了剪切带中组织结构的演变过程 ...
李强 +4 more
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Rare Metals, Volume 45, Issue 11, November 2026.ABSTRACT Fe‐N‐C electrocatalysts are considered promising alternatives to platinum‐based catalysts for advancing the development of metal–air batteries. However, the simultaneous realization of scalable synthesis, hierarchical mass‐transfer pathways, and precise regulation of Fe‐N4 sites remains challenging. Different from conventional Fe‐N‐C synthesis,
Bingye Song +7 more
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