fun fact again: most people know that iron, cobalt, and nickel are ferromagnetic, and at STP that's all you get as pure elements go; every other ferromagnetic or ferrimagnetic thing is a compound
but if you go just slightly colder, pure gadolinium is also ferromagnetic! it's not ferromagnetic at STP because its Curie point is somewhere around 18 °C
-F
one reason for the nickel is as a barrier layer between the gold and copper, yes, because otherwise you get copper-gold intermetallics that can cause problems, but the other reason is to provide a very wettable surface under the gold for the solder to stick to
copper is even more wettable than nickel, but it dissolves into solder very quickly
-F
random fun fact we learned yesterday: the gold in ENIG finished boards is not there to be the thing that the solder wets and sticks to, it's only there to protect the nickel (which is a metal with very good wettability)
the gold layer in ENIG isn't as thin as it is to save cost, though that's part of it--it's intended to completely dissolve into the solder, exposing fresh nickel for the solder to wet
-F
Crowdfunding for Queer Caribbean writer
"Lupita is a queer, Caribbean writer and student who is fleeing an emotionally and physically abusive relationship overseas. She’s currently managed to scrape together enough for a ticket back to the U.S."
Read more, pls boost/donate!
https://www.gofundme.com/f/gze7j4-help-lupita-rebuild-after-fleeing-abuse
sorry this should probably have been CW'd
there was a lot of stress and not thinking straight
-F
Plural system of three, Felthry, Alaric and Rosemary. We'll sign posts with a -F, -A, or -R.
Autistic, 20-something, anxious mess
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#FelthrysVGMSelection for my music picks.
Current avatar by @hi_cial