Optimization of process parameters for preparing honodisperse particles by pulsated orifice injection method

Mineo Asano; Naoki Nagai; Akira Kawasaki; Ryuzo Watanabe

doi:10.2497/jjspm.43.1273

Optimization of process parameters for preparing honodisperse particles by pulsated orifice injection method

Mineo Asano, Naoki Nagai, Akira Kawasaki, Ryuzo Watanabe

ENG - Materials Processing

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Monosized spherical powders of Pb-Sn alloy were prepared by pulsated orifice injection method (POIM). The apparatus was devised for injecting molten metal from a small orifice by a clipping action of a pressure transmitting diaphragm driven by a piezoelectric actuater. Each pulse pressure, induced by the displacement of the diaphragm, produced one liquid droplet having a size almost equal to the orifice diameter. The effect of the process parameters of waveform, characterized as rise time, hold time and fall time, on the particle formation and size scattering has been discussed. The shape of the obtained particles is spherical with smooth surface covered with very thin layer of SnO₂ which is less than 10 Ȧ as detected by auger electron spectrocopy.

Original language	English
Pages (from-to)	1273-1278
Number of pages	6
Journal	Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume	43
Issue number	11
DOIs	https://doi.org/10.2497/jjspm.43.1273
Publication status	Published - 1996 Nov

Keywords

Flip chip bonding
Monosized spherical particle
Pulsated orifice injection method
Solder alloy

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering
Metals and Alloys
Materials Chemistry

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Optimization of process parameters for preparing honodisperse particles by pulsated orifice injection method. / Asano, Mineo; Nagai, Naoki; Kawasaki, Akira; Watanabe, Ryuzo.

In: Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, Vol. 43, No. 11, 11.1996, p. 1273-1278.

Research output: Contribution to journal › Article › peer-review

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