Preparation of Monosized Metal Powders by Pulsated Orifice Injection

Yasunori Kuroki, Akira Kawasaki, Ryuzo Watanabe

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)700-706
Number of pages7
Journaljournal of the japan society of powder and powder metallurgy
Issue number6
Publication statusPublished - 1991

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry


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