tin pest, transformation of beta tin into alpha modification (grey tin)

[arvininfinity2]

Hahah! Impressive



[couchminer]

chemistry is fake and gay

[evildarkfallen]

@couchminer your mom is fake and gay

[plopper09]

@couchminer moron



[tzaipulanelusername]

wht is that?

[PKarklouse]

That's what happens when medusa petrifies someone

[cumesoftware]

That's why lead free solder shouldn't be used. The alotropic change can happen, though at a much slower rate, at temperatures as high as 30ºC!

Well, if graphite would convert to diamond that way... :P

[DeanMalenko]

why does it start only on 1 end and not on all sides simultanously going towards the center? or was it caused by some sort of manipulation on that end?

[wwwperiodictableru]

Because I places small seed on one side. In fact you can see it at the begining of the video

[cumesoftware]

@wwwperiodictableru It is interesting to see that tensile stress also promotes this transformation. The internal pressure stresses the outside "walls" that convert more easily due to the tensile stress caused by this buildup.

[w1n6ed83a5t]

@wwwperiodictableru What did you 'seed' this with? is it just a matter of applying a spot of heat to 'kick start' it

[baalisgod666]

Oh shit! undead terminator.

[bmbirdsong]

Zombie tin

[Shift4chizzle]

wow that looks so animated but i know it is real

[jsl151850b]

Is that -40 C or -40 F?

[BreakOTron]

Yup.

[meSticks]

@jsl151850b: It doesn't matter, the scales cross over at that point.

[oisiaa]

@jsl151850b Ah yes. Is it -40F or -40C? A cool piece of trivia for those who live in arctic climates.

[msqtube]

AHH, ok thanks

[panzuman]

isnt this from hutchison?

[douro20]

@panzuman

Absolutely not. This is an actual chemical phenomenon which occurs with tin at these temperatures.  It is a 23-hour time-lapse video.

[panzuman]

@douro20 what chemical phenomenon and what temeratures? ive seen somthing similar that hutchison "supossedly" did but then again what is reliable from him

[douro20]

@panzuman

This is being shown at around -20C. What is happening is an allotropic transformation- a solid block of crystalline white beta tin is being transformed into its grey-colored alpha form.

[panzuman]

@douro20 that is incredibly interesting

[msqtube]

so, why would it start at one end and progress to the other?

I'm assuming that alloying it with small amount of just about anything would stop this.

[wolfseye14]

W T F????

[s4m5on]

oook then what did u just see?

[ddimaio74]

The title is wrong, alpha tin is tin pest not beta!

[MadManMarkAu]

"At 13.2 degrees Celsius (about 56 degrees Fahrenheit) and below, pure tin transforms from the (silvery, ductile) allotrope of β-modification white tin to brittle, α-modification grey tin. Eventually it decomposes into powder, hence the name tin pest."

- Wikipedia

[wbeaty]

A nanoscale state change infecting a metal! Don't let the fluid metal robot from the movie Terminator 2 fondle your crowbar.

What would the end of the world look like, if it ended as Grey Goo from runaway nanotechnology?  Now you know.

[trustthewater]

Don't let the fluid metal robot from the movie Terminator 2 fondle your crowbar.

uhmmmm... maybe the one from T3, but yeah... not the one from T2.

[wbeaty]

Lick my ice-nine popsicle! :)

[trustthewater]

Wow. That is genius. Is it a threat?... I can't tell... Either way it could be used as one and would leave most people completely dumbfounded.

well done, sir!

[sandcrab132]

Cat's Cradle! YES!