In-situ alloyed solders, articles made thereby, and...

Details In-situ alloyed solders, articles made thereby, and... In-situ alloyed solders, articles made thereby, and...

2004-06-23

2009-02-24

Stoner, Kiley (Department: 1793)

Metal fusion bonding

Process

Plural joints

C228S248100, C438S613000

Reexamination Certificate

active

07494041

ABSTRACT:
A composition includes a solder paste matrix and a solder mixture including a tin-based solder alloy. The composition also includes a discrete dispersion of a metal. The tin-based alloy includes a melting first temperature and the metal includes a melting second temperature. The melting second temperature is greater than the melting first temperature. The discrete dispersion is in a particle range of a majority passing minus 520-mesh. A process includes blending the solder mixture and the metal under non-alloying conditions to achieve the discrete dispersion of the metal. A process includes reflowing the composition such that the composition when solidified, has a melting point that is higher than the solder mixture in the composition.

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