Mechanical properties/adhesion for nickel and copper
Mechanical properties/adhesion for nickel and copper
(OP)
I am searching for mechanical properties and adhesion of nickel electroplated onto nickel; copper electroplated onto copper; and nickel:copper alloy electroplated onto nickel:copper alloy. I have found a little information on the first, but not all I want and nothing on the others.
Thanks.
Dale C.
Library Manager
Thanks.
Dale C.
Library Manager





RE: Mechanical properties/adhesion for nickel and copper
RE: Mechanical properties/adhesion for nickel and copper
It is said that surface preparation of the workpieces and chemical purities are often the end-all and be-all in adhesion. Bad prep = poor properties. With good prep, shear and tensile strengths of 100% of the parent material should be possible. So by logical extension, cohesive failure would occur on the side with the higher copper content of a Cu-Ni interface, copper typically having lower strength. Check published strength data. If its not listed for your alloy, i would use a simple rule of mixtures.
Indentation hardness depends mostly on the substrate. Soft substrate (e.g. Cu) = easy to dent. Hard plating (e.g. Ni) = good abrasion resistance. -- and the converse.
A Cu-Ni phase diagram shows total solubility at all compositions (isomorphous), so any cupronickel alloy can be plated by another of different composition, mechanical properties again depending on the parent materials. (Sorry if I'm telling you something you don't already know.) More responses might come in if you give more specifics. Another variable would be the previous heat treatment and work hardening.
Also you might look at a Mil, Ferderal, or ASTM spec on the respective plating for any insight.
RE: Mechanical properties/adhesion for nickel and copper
RE: Mechanical properties/adhesion for nickel and copper