Results 31 to 40 of about 274,262 (149)
Gongye shui chuli, 2022 电化学诱导循环水系统中的Ca2+在阴极板上以CaCO3的形式沉积，表现出良好的水软化效果。开展阴极板上CaCO3结晶行为的研究有助于提高水软化效率。为探究极板结构和电场形式对CaCO3结晶行为的影响，采用7种不同结构的阴极，分别研究脉冲电场和直流电场中CaCO3的结晶行为。从宏观角度分析不同电场形式下各阴极表面的CaCO3结晶速率，从微观角度分析各阴极表面的CaCO3结晶性质。用高倍光学显微镜对CaCO3显微结构进行表征，通过X-射线衍射仪（XRD）对CaCO3结晶成分进行分析。实验结果表明 ...
林纬 +6 more
doaj +2 more sources
Gongye shui chuli, 2000 用加晶种于过饱和溶液中的方法测定了CaSO4·2H2O晶体结晶生长的动力学过程 ,得到了不加阻垢剂及加阻垢剂两种条件下的结晶生长反应速率常数。结果表明 ,阻垢剂聚丙烯酸及马丙共聚物能明显地阻止溶液中CaSO4 在晶种表面的结晶生长 ,研究发现 ,阻垢的机理主要是阻垢剂对CaSO4·2H2O晶种表面具有吸附作用 ,从而抑制了CaSO4·2H2O的结晶生长 ,实验还证明了这种吸附作用符合Langmuir等温吸附特征 ,CaSO4·2H2O晶体对阻垢剂的吸附属于单分子化学吸附 ...
朱志良 +3 more
doaj +2 more sources
Dianci bileiqi, 1992 重结晶碳化硅的岩相鉴定,可以磨制光片通过反光显微镜进行。每组试样磨制2个光片,其中一个光片毋需经过腐蚀,可直接用来观察气孔的分布、大小、形状与数量等,据此可了解到烧结体的致密度、吸水率等情况;另一个光片经过腐蚀后,可观察烧结体的结晶类型、大小、分布、再结晶圈（晶须）的发育状况、强化再结晶的分布及其影响性能的内在因素——重结晶碳化硅的内部结构。
张玉容
doaj
Rare Metals, Volume 45, Issue 11, November 2026.ABSTRACT Powder metallurgy (PM) near‐α Ti alloys are often constrained by a pronounced strength–ductility trade‐off, due to the coarse lamellar microstructure formed during the sintering process. To address this issue, a thermomechanical route combining cyclic hot rolling with short‐time solution treatment was developed to improve the mechanical ...
Guinan Zhao +8 more
wiley +1 more source
Progress and Future Prospect of Electrolyte Additives in Aqueous Zinc‐Ion Battery
Rare Metals, Volume 45, Issue 11, November 2026.ABSTRACT Aqueous zinc‐ion batteries (AZIBs) have been regarded as a strong candidate for a new generation of electrochemical energy storage systems because of their high safety, environmental friendliness, low cost and relatively high energy density. However, there are still many challenges for practical application, especially the uncontrolled growth ...
You‐Cun Bai +2 more
wiley +1 more source
四川大学学报. 自然科学版, 2014 利用能量为1.7Mev、注量在1015～2×1016/cm2的电子辐照非晶Gd2Zr2O7粉体、晶态Gd2Zr2O7纳米粉体和晶态Gd2Zr2O7纳米陶瓷,采用XRD测试手段对电子辐照前后的样品进行分析.结果表明,在此电子能量下,非晶Gd2Zr2O7粉体未出现晶化现象;部分晶态Gd2Zr2O7纳米粉体和纳米陶瓷在1016/cm2的注量下,结晶度提高,晶粒长大,辐照引起的退火效应占主导地位;结晶程度较高的Gd2Zr2O7纳米陶瓷在电子辐照下结晶度提高最大,平均晶粒尺寸也有明显提高.
周莉, 卢铁城, 伍登学, 刘方明
doaj
Rare Metals, Volume 45, Issue 11, November 2026.ABSTRACT Pore engineering reduces the thermal conductivity of thermoelectric materials, yet typically degrades electrical conductivity by enhancing carrier scattering—a long‐standing trade‐off. Here, we overcome this trade‐off in SrTiO3‐based entropy‐engineered ceramics via a one‐step synergistic strategy: using poly(methyl methacrylate) (PMMA) as a ...
Ziyao Wei +7 more
wiley +1 more source
四川大学学报. 自然科学版, 1985 用反相色谱法研究了聚2.6萘二甲酸乙二酯在高温区（233,5—246℃）和低温区（142—156℃）的结晶动力学,得到了半结晶时间、结晶速率常数以及Avrami指数.测定了聚2.6萘二甲酸乙二酯的晶片折迭表面自由能δe;计算了结晶动力学方程中的前置指数Gο,初步得出聚2.6萘二甲酸乙二酯的结晶速率比一般高分子慢.
陈德本, 余自力, 许苏林
doaj
Rare Metals, Volume 45, Issue 11, November 2026.ABSTRACT Garnet‐type solid‐state electrolytes (SSEs) are widely regarded as key materials for high‐energy lithium‐ion solid‐state batteries (LSSBs), owing to their compatibility with lithium metal anodes and high‐voltage cathodes. However, their practical application is limited by multiscale degradation processes, including interfacial instability ...
Yan‐Feng Wang +8 more
wiley +1 more source