Preparation of Monosized Metal Powders by Pulsated Orifice Injection
Preparation of Monosized Metal Powders by Pulsated Orifice Injection
复制标题
脉动孔板注射制备单一尺寸金属粉末
DOI：
10.2497/jjspm.38.700
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发表时间：
1991
期刊：
影响因子：
--
通讯作者：
R. Watanabe
中科院分区：
文献类型：
--
作者：
Yasunori Kuroki;A. Kawasaki;R. Watanabe
设计了一种用于制备单分散金属颗粒的脉冲喷孔喷射装置，该装置利用压电驱动器的压力传递膜片的剪切作用，将熔融金属从小孔喷射出来。当隔膜的位移变化时，每个脉冲压力产生具有几乎等于孔直径的尺寸的液滴。颗粒平均直径的标准偏差为15%，这与溶胶-凝胶颗粒的标准偏差大致相同。讨论了喷射速率、脉冲频率、喷射气氛和冷却速率等工艺参数对颗粒形成的影响以及液滴喷射动力学。
Pulsated orifice injection apparatus was devised for the preparation of monodispersed metal particles, in which molten metal was injected from a small orifice by a clipping action of a pressure transmitting diaphragm given by a piezoelectric actuator. While the displacement of the diaphragm was varied, each pulse pressure yielded a liquid droplet having a size almost equal to the orifice diameter. The standard deviation of the mean diameter of the particles is 15%, which is about the same as that for sol-gel particles. The effect of process parameters, such as injection rate, pulse frequency, injection atmosphere and cooling rate on the particle formation, as well as the kinetics of liquid droplet injection, is discussed.