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Registered Member #3888
Joined: Sun May 15 2011, 09:50PM
Location: Erie, PA
Posts: 649
shouldn't solder already melt in an induction field? if you want the paste for surface mount components then you'd probably only be able to use it for resistors and some capacitors, as everything else would get fried by the IH. from the abstract it seems that the solder is to be a high quality, low melting point, lead free alternative. If used in a solder bath, the magnetic fields would probably also screw with the flow of your iron particles, causing the ratio of iron to SnAgCu to change with time. The iron might also oxidize, causing discoloration and poorer conductivity. How about using nickel? A magnetic solder paste that didn't rust would be great for wires (not connected to a circuit), pipes, art, etc.
I could be totally wrong with my chemistry and logic, but to me it would seem like a bad idea to ever solder any sensitive electronics using a powerful magnetic field. It does sound like a cool experiment to try out though.
Registered Member #2901
Joined: Thu Jun 03 2010, 01:25PM
Location:
Posts: 837
Ordinary solder paste has flux already, but it is of course rather expensive ... part of that is the difficulty of getting a good thixotropic mix, so it keeps it's shape after application.
Magnetic solder paste might behave like a magnetorheological fluid, so you could keep it rigid simply with a large permanent magnet ... in which case the composition could be far simpler than ordinary solder paste.
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Magnetic solder paste?
