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Freezing dynamics of molten solder droplets impacting onto flat substrates in reduced gravity.

Author(s) : HAFERL S., BUTTY V., POULIKAKOS D., et al.

Type of article: Article

Summary

The axisymmetric impingement of solidifying molten solder droplets onto smooth metallic substrates in a reduced gravity environment is investigated numerically to provide basic information on the heat and fluid flow phenomena and determine the governing parameters of the process. The numerical predictions are also tested against experimental data. Millimetre-sized droplet impact events in reduced gravity are employed for scale up modelling of the impingement of picoliter size droplets of molten eutectic 63% Sn-37% Pb solder used in electronic chip packaging. The article reports on both numerical (the main focus of the paper) as well as experimental work (for the purpose of verification).

Details

  • Original title: Freezing dynamics of molten solder droplets impacting onto flat substrates in reduced gravity.
  • Record ID : 2002-1783
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 44 - n. 18
  • Publication date: 2001/09

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