Impact of ferritic nitrocarburizing on galvanic corrosion
Impact of ferritic nitrocarburizing on galvanic corrosion
(OP)
I am hunting around for information on the impact of ferritic nitrocarburizing on galvanic corrosion. Does this process tend to move the anodic index up or down in steels? Or is it generally considered nominal in impact? I am looking at this from a fastener perspective. Any insight or pointers would be very welcome!
Cheers!
Cheers!





RE: Impact of ferritic nitrocarburizing on galvanic corrosion
RE: Impact of ferritic nitrocarburizing on galvanic corrosion
RE: Impact of ferritic nitrocarburizing on galvanic corrosion
RE: Impact of ferritic nitrocarburizing on galvanic corrosion
swall - If you have any values for A2, D3 and M2 steels that would be a great starting point. Honestly, any info would be welcome including for stainless.
TVP - I did notice the dearth of readily available info. The fact the galvanic coupling is impeded is very helpful information. I am just trying to get a basic understanding of the likely impact before I take talk to a supplier and accept anything they say because I don't know any better.
RE: Impact of ferritic nitrocarburizing on galvanic corrosion
to see an FNC part coupled in a enviroment where a potential could develop.
Here is some information on salt bath FNC especially the QPQ
(quenched, polished, and quenched) finish. Depending on the media FNC does improved the corrosion resistance of some low alloy metals depending on the processing steps. From my experience I would not consider it a general anti corrosion process.
With the salt bath process the metal can be Q (quenched), QP
(quenched and polished), QPQ (quenched, polished, and
quenched).
The following articles show the results of testing in salt spray
with a much better resistance for the QPQ processing.
The Badger Metal site has information on tool steels, but they too have their limitations in respect to FNC.
http://www.finishing.com/kolene/qpq/
htt
http://ww
0219b54b79852571cb006bc9d2/e12cddaa4d9861b1852571cd00
075581/$FILE/Nitromet%20LNC%20with%20a%20Post%20Process
%20Enhancement,%20an%20Effective%20Alternative%20to%20Cr%
20Plating.pdf
http://w
http://www.badgermetal.com/extras/extras.htm
RE: Impact of ferritic nitrocarburizing on galvanic corrosion
RE: Impact of ferritic nitrocarburizing on galvanic corrosion
sites are requiring you to register to keep the site strictly
business.
The registration is required for the the other information on the page.
On the linked page there is a "Extra Resources and Information Menu" that carries most of the information about the process.
RE: Impact of ferritic nitrocarburizing on galvanic corrosion