METHODS FOR PROVIDING COMPOSITE ASPERITIES

摘要

Novel methods for providing asperities (sometimes referred to as asperates) on interposer contacts. The asperities comprise low electrical resistant particles such as titanium carbide that are bonded or plated in conjunction with nickel or other matrices on metallic substrate pads. An electroplating bath that has the low electrical resistant particles dispersed in solution is used at low current densities to electrolytically plate a composite electrically low resistant abrasive surface. The composite bond between the particles and the substrate can then be further reinforced with a standard metallic electroplate, if desired.