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topic 11140

Hydrogen Embrittlement and Electroless Nickel


(2001)

After plating a carburzied steel with electroless nickel, how many hours can the hyrdorgen embrittlement bake be delayed?

Daniel Bemenderfer
- Indianapolis, Indiana


First of two simultaneous responses (2001)

How long after the onset of infection should you delay the administration of antibiotics?

24 hours is absolutely too long. 12 hours is definitely too long. 4 hours is becoming the new "standard". Some specs are beginning to call for one hour maximum. The right answer is to look towards tomorrow and accept that the parts should go directly from the plating line to the oven.

Ted Mooney, finishing.com Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey


Second of two simultaneous responses (2001)

There are various retention times depending on the specification you are conforming to. I have seen 4 hours and 8 hours. I reccommend trying to get them to the oven as soon as possible. The longer the retention time is delayed, the longer the atomic hydrogen has to migrate into the substrate.

Best of Luck.

Ira Donovan, M.S.F.
Kansas City, Missouri



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