GEGENSTAND MIT MEHRSCHICHTIGEM GALVANISCH ABGESCHIEDENEM UEBERZUG UND EIN VERFAHREN ZUR HERSTELLUNG DIESES GEGENSTANDES

摘要

A composite electroplated article and process for making same comprising a body having a plurality of adherent electroplates of controlled thickness and composition thereon. The first layer comprises a nickel-iron alloy containing about 15 to about 50 percent by weight iron; the second layer comprises a nickel-containing plate of a sulfur content of about 0.02 to about 0.5 percent by weight; the third layer comprises a nickel-iron alloy containing about 5 to about 19 percent by weight iron but less iron than the first layer. Optionally, a decorative chromium outer layer is applied to the surface of the third layer, and preferably, an intervening nickel plate is interposed between the third layer and outer chromium layer of a type selected to induce micro-discontinuities in the outer chromium layer.