Posted by Will (in IL) on Sunday, December 31, 2006 at 09:02:22 :
In Reply to: Re: I've only heard of it from plating. posted by David on Sunday, December 31, 2006 at 01:15:28 :
Hydrogen embrittlement can happen during various manufacturing operations or operational use, anywhere where the metal comes in contact with atomic or molecular hydrogen. Processes which can lead to this include cathodic protection, phosphating, pickling, and electroplating. A special case is arc welding, in which the hydrogen is released from moisture in the coating of the welding electrodes. Other mechanisms of introduction of hydrogen into metal are galvanic corrosion, chemical reactions of metal with acids, or with other chemicals.