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Ductility of Nickel Plating

I would like to know the relationship between process parameters and the Nickel deposit ductility / elongation

Srinivasa Rao
automotive - Hosur, Tamilnadu, India
2003

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Hi, Srinivasa. Each parameter, including the addition agents, has an effect on those properties.

Please see Safranek's Properties of Electrodeposited Metals and Alloys [affil link to Amazon or on AbeBooks] or Dini's "Electrodeposition: The Materials Science of Coatings and Substrates" for great coverage of these complex relationships.

Good luck.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2003

Most electroless nickels behave as glass does. That meaning the elongation and ductility approaches zero. Thin deposits can be bent a certain amount together with substrate and, if properly processed, will not chip or flake, but the internal stress in the plate is still present. In these kind of materials, this residual stress is not alleviated by a permanent deformation as is the case with ductile materials.

Guillermo Marrufo
Monterrey, NL, Mexico
2003