Quote:
Originally Posted by DavidU
I've often wondered what acid is used to etch the Widmanstatten lines.
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Possibly nital etching which is nitric acid + alcohol (methanol or ethanol) although I don't think this is advisable if Nickel is involved. Alternatively it could be Picric acid and alcohol.
Nice stuff Picric acid, it's explosive when dry.
A metallurgist I knew blew himself up using Picric acid.
Regards
Steven