Results 11 to 20 of about 304,161 (144)
, 2003 本文报道了在廉价的颗粒硅带上用PECVD法并两次引入铝的工艺制备多晶硅薄膜。第一次引入铝是为了去除薄膜上过多的杂质；第二次引入铝是为了实现低温诱导结晶。通过对薄膜样品的拉曼谱和X射线衍射(XRD)谱分析，我们认为金属低温诱导结晶成功与否跟诱导前薄膜的结构密切相关。采用该工艺成功地制备了结晶度92％左右 ...
王晓晶, 石旺舟, 周燕, 邱春文
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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
doaj +2 more sources
Jingshui jishu【目的】为解决地下水中钙离子(Ca2+)、铁离子(Fe2+)、锰离子(Mn2+)复合污染问题，探究诱导结晶工艺对此类离子的协同去除效能与机制。【方法】本文采用流化床结晶工艺开展中试试验，系统考察了氢氧化钠(NaOH)投加量、晶种投加量、上升负荷及连续运行对处理效果的影响，并利用扫描电镜(SEM)与X射线衍射(XRD)对结晶产物进行表征。【结果】NaOH投加量为160 mg/L,诱导晶种投加量为176 g/L,出水总硬度降低至120.82 mg/L,Ca2+、Fe2+、Mn2 ...
Cui Hongjun +5 more
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Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Laser powder bed fusion (LPBF) of Inconel 718 alloy inevitably introduces pronounced microstructural anisotropy, typified by columnar grains and robust crystallographic texture. This results in direction‐dependent fatigue behavior, raising critical reliability concerns for high‐stakes aerospace applications.
Zhifang Shi +9 more
wiley +1 more source
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT The strength and ductility trade‐off in titanium matrix composites (TMCs) is a critical factor limiting their widespread application. In this study, a (TiB + TiC)/Ti–6Al–4V composite with an optimal balance between strength and ductility was engineered via multi‐directional forging.
Chunyu Shen +8 more
wiley +1 more source
Gongye shui chuli为了考察氟磷酸钙诱导结晶除氟效果，利用Box-Behnken design（BBD）设计氟磷酸钙诱导结晶除氟实验，建立了以氟离子去除率为响应值的二次回归模型并通过方差分析（ANOVA）比较了n（Ca）/n（F）、n（P）/n（F）、晶种投加量3个参数对氟离子去除率影响的显著性。通过RSM优化氟磷酸钙诱导结晶除氟工艺参数，并通过最优工艺条件下实验结果对模型进行了验证。RSM优化的最佳条件：n（Ca）/n（F）=15、n（P）/n（F）=8.918、晶种投加量9.208 g/L，理论最佳除氟率为97.26%，
郑威城, 秦树林, 王忠泉, 陈霞
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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
wiley +1 more source
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Multicomponent transition metal oxides (TMOs) incorporating rare‐earth (RE) elements have emerged as promising materials for the oxygen evolution reaction (OER). However, knowledge of how to regulate the structure of TMO‐based nanomaterials through RE incorporation to enhance catalytic performance remains limited.
Bolin Zhao +6 more
wiley +1 more source
Gongye shui chuli诱晶载体的选择和优化一般通过对比目标物的去除效果，载体选择范围窄、过程耗时长、人力物力消耗大。为了提高诱晶载体选择和优化过程的工作效率，探讨以Zeta电位为指标进行诱晶载体选择的可行性。考察了相同体系中天然石英砂、精制石英砂、分析纯石英砂、石榴石、硫铁矿、白云石、长石、萤石等8种诱晶载体的Zeta电位、诱晶沉淀去除Hg2+的效果，分析了载体在Hg2+去除中的作用机理，探讨了载体的Zeta电位与诱晶沉淀去除Hg2+效果的相关性，以及基于Zeta电位的HgS诱晶载体选择方法。结果表明 ...
张航, 马丽荣, 余蕾
doaj +2 more sources
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Refractory high‐entropy alloys (RHEAs) face severe oxidation challenges at elevated temperatures, despite their outstanding mechanical properties. Consequently, understanding the oxidation mechanisms of RHEAs is crucial for their high‐temperature applications.
Zheng Tian +7 more
wiley +1 more source