METHOD OF MAKING ELECTRONIC HOUSINGS MORE RELIABLE BY PREVENTING FORMATION OF METALLIC WHISKERS ON THE SHEETS USED TO FABRICATE THEM

摘要

A metallic sheet for an electronic housing consisting of a zinccoating on a steel base and a thin metal film, preferably a copper film,covering the zinc coating on one or both sides of tile sheet, and amethod of making the metal film. The metal film reduces whispering ofthe zinc in the zinc coating. Whiskering can also be prevented on othermetals anodic to copper such as, for example, tin and cadmium.