BROMINE METHANOL ETCHANT PREPARATION FOR 690 NICKEL ALLOY
BROMINE METHANOL ETCHANT PREPARATION FOR 690 NICKEL ALLOY
(OP)
I try to find how prepare the BROMINE-METHANOL ETCHANT SOLUTION (BrMeOH) to perform a SEM over a 690 nickel alloy. I already look for in the ASTM E 407 and AMS handbooks without any luck.
Thanks in advance for any tip or reference.
Thanks in advance for any tip or reference.





RE: BROMINE METHANOL ETCHANT PREPARATION FOR 690 NICKEL ALLOY
Bromine is a very hazardous material. Read the MSDS and the Technical Data Sheet prior to using this material.
Check out the following:
http://www.metallography.com/
There was at one time a link that was devoted exclusively to metallurgical etchants, but my link is dead.
Also NiDI would be a great starting point.
One thing that I've found is that people tend not to recommend hazardous reagents as they once did.
RE: BROMINE METHANOL ETCHANT PREPARATION FOR 690 NICKEL ALLOY
For nickel alloys, let it stand for 4-5 minutes or so and then swab. Do not use after 30 minutes or so and do not store.
I agree with Unclesyd that hazardous etchants are not as popular now as they once were - I can't remember the last time someone used Murikami's...