I’ve heard that if you put liquid gallium metal
onto aluminium or aluminum as you may call it,
the gallium is sort of absorbed by the aluminium
and it forms a new alloy which becomes really brittle and soft.
So, I thought I’d give it a go with this Coca can.
I wanted to leave the top closed.
So I carefully pierced it with a knife a couple of times,
to empty out the drink.
Then I filled up a syringe with liquid gallium
which I had warmed to melting points,
and made a pool of it on the top of the can, like this.
It looks really cool.
And I left like this for a few hours to see what happens,
When I came back, the gallium had set and it didn’t look much different.
I removed the gallium.
And it looks absolutely no different from before,
I tried pushing it with my finger,
and a screwdriver
and it seems just as strong as it was to begin with
adding gallium hasn’t changed it at all
I had looked at the can,
a rather than specifying it was made from aluminium,
it just says metal,
so I wondered if it was an alloy which was unaffected by the gallium.
So next I found the RedBull can,
does stay, it is made from aluminium,
so I drained it out into a bowl.
And repeat the experiment by adding gallium to the top,
I let it sit there for a few hours
and when I returned, I removed the gallium.
The can seems absolutely unaffected,
it hasn’t been weakened, and it’s just as strong as it was before.
I decided to try one more time,
so I emptied the can of RedBull and the can of coke again.
But this time, I took some sandpaper.
And use it to scratch up the surface of the can like this,
I did the same to the coke can, too.
just in case that there’s a coating on top of the aluminium,
which stops the gallium from penetrating.
I added a drop of gallium to both cans,
and left it to see what happened,
over the next hour, it seemed to change.
It was absorbed into the aluminium,
and appeared to change the structure
I took the coke can,
and gave it a poke with my finger,
and to my amazement, I was able to poke a hole straight through it.
The can had becomed soft and almost stretchy.
You can just sort of tear off the top,
and roll it up with your fingers,
Pretty cool, huh?
I kept pulling and removed the whole top,
The rest of the structure did appear unaffected,
my fingers were covered in this silvery gray coating
which is non-toxic and easily washes off with soapy water.
Next, I have to look at the RedBull can,
there was still a big drop of gallium on the top,
so I removed that,
and gave it a poke.
And yes, it too had become soft and brittle,
not as much as the coke can,
but maybe the area that I sanded down wasn’t as big.
It’s not as flexible as the coke can was,
it really is brittle and I can just tear pieces off.
Again, the rest of the can does seem unaffected,
but I may have another go soon and try making a whole can
which I can just scruff and dissolve.
I hope you’ve enjoyed watching this video.
If you want to see more, you can click on the links
or take a look at my YouTube channel page.
保证安全 享受快乐 感谢您的观看
Stay safe, have fun and as always thanks for watching.