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Discoloration after passivation




Well we are doing the pickling and passivation of cladded ( Inconel 825 ) pipes. Well the problem is, during and after cleaning we are getting, yellowish/ greenish in color. What would be reason ?

thanks and regards

Navin Kumar Tiwari
- Dubai, UAE
February 110, 2011



Please give info as for the process you use so we can try to figure where the problem comes from.

sara michaeli
sara michaeli signature
Sara Michaeli
Tel-Aviv-Yafo, Israel
February 17, 2011



Navin

Does Inconel 825 need to be passivated?

Being a high nickel content material, I would suspect the yellow-green color is from the nickel.

Willie Alexander
- Colorado Springs, Colorado
February 19, 2011




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