Macro-etchant for Nickel alloys
Macro-etchant for Nickel alloys
(OP)
I am trying to find an acid mix that will adequately reveal the microstructure of a 35/45 chrome/nickel alloy. The current etchant I use is HN03 HCL H20 mix, which is OK for 25/35 alloys.
Where can I find info on etching high nickel-based alloys?
Where can I find info on etching high nickel-based alloys?





RE: Macro-etchant for Nickel alloys
Kallings #2
CuCl(2) - 5 grams
HCl - 100 ml
Ethanol - 100 ml
or
Marble's Reagent
CuSO(4) - 10 grams
HCl - 50 ml
DI water - 50 ml
You could add (drops) of sulfuric acid to the etchant to increase activity