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Passivate stainless medical instruments before or after TiN coatings?

March 4, 2008

Should we passivate before or after TiN coating on 17-4 ph stainless steel.
I believe we should passivate before but I'm not totally sure.
Thanks for your help.

Scott Jones
- Mcmurray, Pennsylvania, USA

Passivation should be before, since TiN is very corrosion resistant by itself. It is quite thin, so it does not have an infinite corrosion resistance life.

James Watts
- Navarre, Florida
March 6, 2008

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