plating, anodizing, & finishing Q&As since 1989
Micro Electronics Nickel/Gold Plating to Completely Eliminate Nickel Oxidation
September 26, 2012
Q. Presently I have sintered Electroplated Nickel (200 µinches) on top of Moly/Mn on top of ceramics. I am sending it to a plating house who re-activates the Nickel (Chemically) followed by a gold flash 10 µ inches followed by Barrel Au plating of about 30 µ inches. But once I solder two pieces of my ceramics I noticed small area's where I suspect Nickel oxide is present.
How can I first detect Nickel Oxide prior to Gold flash?
How can I absolutely get rid of the oxide?
Is there an inexpensive process to perhaps deposit Ni and Au in vacuum so there is little chance for oxidation?
Director of Program - Beverly, Massachusetts
A. The gold is rapidly sucking up into the hot solder and the solder is not sticking to the bare nickel.
Robert H Probert
Robert H Probert Technical Services
Garner, North Carolina