The only report of a bulk Fe16N2 magnet I remember reading about used a 2 GPa (300 kpsi) diamond anvil to compact the powder. I can see why that might be economically impractical right now.
Also there was a bombshell paper that came out claiming synthesis of bulk L10-FeNi which was later retracted [1] and may have put a temporary damper on interest in Fe16N2. It remains unclear which material will be available first.
Fertilizers and a ball mill in a garage is just the classic direct highway route from nothing to pipe bombs, so there are going to be checkpoints along the way.
not that big a deal, but you do have to register and have basic security, ammonium nitrate is by todays standards just one step up from black powder, and if it's a proper company with mechanical and chemical engineers signing off then it's literaly just paper work.All in all industrial type experimenting involves avoiding exuberant exothermic reactions and dramatic kinetic events, with or without an electrical component, just about everyone involved has a story, and there are plenty of injuries and fatalities.
One of the hard parts of bootstraping any industrial process is having people who have the knowledge and experience to train people in how to do things and not get hurt, it's not "saftey" as much as survival skills.
yeah, but point is more like that we do not need hard to refine ( that is why are they called rare earths ) materials from china, if those magnets were strong as neodymium ones. which they are not in video.
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problem with chemistry is most of these things are easily made in garage.
For example Slovak military is training disposal of homemade explosives / chemicals by watching NurdRage videos ;)
So what happened with the startup, Niron? [1] They've been trying to commercialize this for years.
[1] https://www.nironmagnetics.com/
The fact they don't have a 'buy one of our magnets now, $10' button tells me that the tech doesn't actually work.
Iron nitride is much more useful as a thin film coating. Bulk magnet tech just isn't there.
The only report of a bulk Fe16N2 magnet I remember reading about used a 2 GPa (300 kpsi) diamond anvil to compact the powder. I can see why that might be economically impractical right now.
Also there was a bombshell paper that came out claiming synthesis of bulk L10-FeNi which was later retracted [1] and may have put a temporary damper on interest in Fe16N2. It remains unclear which material will be available first.
1: https://advanced.onlinelibrary.wiley.com/doi/full/10.1002/ad...
The last thread of informed comments here on this:
https://news.ycombinator.com/item?id=42995429
I love this guy. Totally living out my physicist-tinker dreams.
His videos/experiments are really really good.
good luck getting ammonium nitrate without being visited by the police (at least here in Europe)
Farmers work with hundred kilo bags of the stuff.
farmers yes, I wanted to cool some stuff with it, no chance
and you can't just buy it for your garden then?
Fertilizers and a ball mill in a garage is just the classic direct highway route from nothing to pipe bombs, so there are going to be checkpoints along the way.
not that big a deal, but you do have to register and have basic security, ammonium nitrate is by todays standards just one step up from black powder, and if it's a proper company with mechanical and chemical engineers signing off then it's literaly just paper work.All in all industrial type experimenting involves avoiding exuberant exothermic reactions and dramatic kinetic events, with or without an electrical component, just about everyone involved has a story, and there are plenty of injuries and fatalities. One of the hard parts of bootstraping any industrial process is having people who have the knowledge and experience to train people in how to do things and not get hurt, it's not "saftey" as much as survival skills.
> ammonium nitrate is by todays standards just one step up from black powder
I thought that was potassium nitrate. Which I bought a bottle of on Amazon when I was curing a ham.
yeah, but point is more like that we do not need hard to refine ( that is why are they called rare earths ) materials from china, if those magnets were strong as neodymium ones. which they are not in video.
--
problem with chemistry is most of these things are easily made in garage.
For example Slovak military is training disposal of homemade explosives / chemicals by watching NurdRage videos ;)
https://youtu.be/Zybj-mi1FP0?si=KGMUJj5l5NUt2egh&t=68
or this simple technology from 1890 used in different way is helping helping Europe to be self sufficient with energy:
https://www.tue.nl/en/research/institutes/eindhoven-institut...
https://www.youtube.com/watch?v=HZYWpZYuRKc