I bought 2 alumina/silicon cruicibles and stuffed a load of NaOH solution into one of them, which sat in there for a few days.
Cannot remember why i did that.
The NaOH worked it's way through the entire structure..
On the outer surface there were mosaic-like lines where the NaOH had penetrated all the way through.
On firing, it exploded.
[Edited on 9-4-2016 by aga] |