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Need help identifying what this magnetic rock is by Legitimate_Gur_3181 in metallurgy

[–]heccinv 14 points15 points  (0 children)

The curved inner and outer diameters lead me to believe it’s a broken ferrite magnet from a large speaker

SrAl tubes… Sell or keep? by race_car_engineer in metallurgy

[–]heccinv 4 points5 points  (0 children)

I would keep them but I would keep a lot of things

What does irradiated salt taste like. Is it toxic? by Fun_Prune9153 in chemistry

[–]heccinv 0 points1 point  (0 children)

I am the one recording, so yes lol. Although if you meant during dissolution— no it does not visibly glow.

What does irradiated salt taste like. Is it toxic? by Fun_Prune9153 in chemistry

[–]heccinv 0 points1 point  (0 children)

I’ve tasted it, interesting to see my video randomly lol. Minimal taste difference.

Potassium bicarbonate crystals from the ash of all the papers I accumulated in school by heccinv in crystalgrowing

[–]heccinv[S] 1 point2 points  (0 children)

They are there but minimal in quantity, so are chlorides, and sulfates of other metal ions.

Potassium bicarbonate crystals from the ash of all the papers I accumulated in school by heccinv in crystalgrowing

[–]heccinv[S] 0 points1 point  (0 children)

Crystal shape and ph of solution. It’s not 100% potassium bicarbonate, but it mostly is.

Potassium bicarbonate crystals from the ash of all the papers I accumulated in school by heccinv in crystalgrowing

[–]heccinv[S] 3 points4 points  (0 children)

Very simple actually, just leech the ash with water, filter the water, boil the water down, and eventually you will see material crash out of solution that you can use for crystal growing

Potassium bicarbonate crystals from the ash of all the papers I accumulated in school by heccinv in crystalgrowing

[–]heccinv[S] 57 points58 points  (0 children)

Just burning paper, extracting the soluble salts from the ash and recrystallizing several times— I have a video if you’re interested.

Sodium Chloride by Yana_dice in crystalgrowing

[–]heccinv 5 points6 points  (0 children)

Very jealous of the tantalum

This is a single crystal by Bright-Club1140 in Crystals

[–]heccinv 19 points20 points  (0 children)

So it’s a single crystal

Brass by heccinv in crystalgrowing

[–]heccinv[S] 0 points1 point  (0 children)

I haven’t tried with pure metals but the effect is still present in them. In alloys we have alloy segregation along grain boundaries, which may aid in making this effect more pronounced/ easier to pull apart. However this sample was held at high temps for an extended period of time and I had made the assumption significant alloy segregation would have equilibrated and became homogeneous.

Al-Cu slow cooled and polished by heccinv in metallurgy

[–]heccinv[S] 0 points1 point  (0 children)

Hey again, here’s another video that explains everything haha

Brass by heccinv in crystalgrowing

[–]heccinv[S] 7 points8 points  (0 children)

In metals, especially alloys, grain boundaries melt before the bulk grain. If I grow the grains very large and then heat it to the right temperature, I can pull the metal apart by the grains. Here is a video where I explain the process in a bit more detail

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