Results 31 to 40 of about 1,238,718 (177)
Gaoya dianqi, 2010 目前,大气压非平衡等离子体及其源的研究局限于弱（电场）电离放电范畴,存在等离子体浓度低、能耗高和体积庞大等问题。为此,研究非均匀强电场下电晕放电特性及其离子运动规律,以便解决上述问题,成为当务之急。该实验以自制的线点式等离子体发生器为例,研究其在非均匀强电场下的电晕放电特性及离子运动规律,结果表明:使用细电晕极,更易使空气电离产生负离子;通过数据模拟,得出此线点式电晕放电空间,负离子浓度可达到1014～1015个/m3,且电压越高,越靠近电晕区,场强越大,离子输运率越高,负离子浓度越大 ...
刘志强, 李鹏, 张文月, 李庆
doaj
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Achieving a simultaneous enhancement in both tribological and mechanical properties of self‐lubricating composites has long been a challenge. In this study, we designed the composition based on first‐principles calculation and fabricated a copper‐based self‐lubricating composite with excellent tribological and mechanical properties via spark ...
Zhongbo Wang +4 more
wiley +1 more source
, 2014 本发明为一种表面放电电离源-无离子门离子迁移管，其特征在于利用表面放电电离产生薄离子片来替代传统离子门，利用脉冲电场将离子引入漂移区，仪器装配简单，易于批量化和微型化。由沿轴线分布的脉冲推斥电极、表面放电离子源、漂移区、栅网、离子接收极等构成；待测物被离子源电离产生的产物离子分别被脉冲推斥电极引入漂移区，在高压电源提供的电场中飞行 ...
王卫国, 李海洋
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Zhejiang Daxue xuebao. Lixue ban, 2010 建立了一种测定酒石酸中痕量阴离子的离子色谱柱切换技术分析方法.使用Dionex IonPac ICE-AS6离子排斥柱将所需分析的痕量离子从酒石酸溶液中分离出来,再将被分离组分通过Dionex IonPac AG23(4 mm×50 mm)离子交换浓缩柱进行浓缩,最后将浓缩柱的组分通过Dionex IonPac AG22(4 mm×50 mm)和Dionex IonPac AS22(4 mm×250 mm)色谱柱进行分离,抑制型电导器进行检测.方法所得回收率在88.7%~114.1 ...
RENDan-dan(任丹丹) +5 more
doaj +1 more source
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Titanium (Ti)–steel composite joints are prone to the formation of compounds such as TiC, TiFe, and TiFe2 during solid‐phase bonding. This phenomenon leads to premature failure and significantly reduces the bonding quality of the joints. However, the fracture behavior of the joint influenced by these compounds, particularly on the initiation ...
Sheng Zeng +5 more
wiley +1 more source
, 2007 一种光电离离子迁移质谱仪中的离子门的制备方法，采用一圆环状绝缘板，厚度为2～3mm，外径为30～44mm，内孔直径为12～15mm；沿圆环外径印刷一层金属环，该金属环的外径与绝缘板外径相同，内径比绝缘板内径小6.5mm；在内孔两侧处且与金属环不相连地设有固定金属丝的小孔，该小孔直径为0.3mm，同一列中孔心间距为1.4～1.8mm，与金属环同面层上穿绕金属丝，相邻两金属丝的间距为0.7～0.9mm。本发明提供的离子门结构合理，电路控制效果好，制备工艺简单，成本低 ...
李海洋, 时迎国
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT The development of structurally stable anodes with high capacities and long cycle lives is essential for the development of potassium–ion batteries. Conversion‐type anodes have attracted considerable attention in potassium–ion batteries (PIBs) due to their high theoretical capacities.
Jeong Ho Na +7 more
wiley +1 more source
, 2014 一种双电离的离子源，该离子源由电子轰击电离（EI源）和真空紫外灯电离（PI源）两种电离方式组成，其结构包括进样管，推斥极、电离室、灯丝、紫外灯、引出极、聚焦极、出射极、推斥板和接地栅板。本发明拓宽了单一离子源分析多形态样品时的适用性，同时提高了碎片离子的质量选择 ...
张世宇 +5 more
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Gongye shui chuli, 2004 研究了循环水中锌离子的稳定性，讨论了磺酸盐共聚物和水质因素对锌离子稳定性的影响。结果表明，随着磺酸盐共聚物ZF322浓度的增大，循环水中锌离子的稳定性增强;三价铁离子、钙离子浓度和碱度的增加都会降低锌离子的稳定性;正磷在低浓度时可增强其稳定性;pH值对锌离子稳定性影响很大，但加入药剂后影响比较小。
秦会敏 +5 more
doaj
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT The growing deployment of high‐frequency electronic systems has intensified the demand for high‐performance microwave absorption materials. In this work, we developed La‐V co‐substituted barium hexaferrites, Ba1‐xLaxFe11.9V0.1O19 (BLFVO), via a sol‐gel route.
Zhihui Yang +7 more
wiley +1 more source