- #1
soman_kps
- 3
- 0
I would like to know why alkaline permanganate (potassium permanganate in sodium or potassium hydroxide) is used for dissolving corrosion products formed over nickel alloys such as inconel 600 (composition of alloy is 72% Ni, 16% Cr, 8% Fe) while acidic permanganate (potassium permanganate in nitric acid) is more effective to dissolve corrosion products formed over iron based alloys such as SS304 (composition of the alloy is 10% Ni, 18% Cr and 70% Fe). I presume that the corrosion product over both the surfaces will be oxide of Ni-Cr-Fe.