Corrosion inhibition
AssigneeAT&T Bell Laboratories
InventorJohn P. Franey
Life of this patent
Estimating the term…
Abstract
Corrosion of metals such as silver and copper by sulfur and chlorine containing entities are substantially prevented by surrounding these materials with a suitable polymeric structure. The structure should be a polymer containing a material such as copper or aluminum that reacts readily with corrosive gases. In one advantageous embodiment a polymer bag containing approximately 35 weight percent of dispersed, powdered copper is employed to enclose a metal containing structure such as a printed circuit board. Use of this expedient substantially reduces corrosion of the printed circuit board.
Claims5
A process for protecting an article including a metal region from corrosion comprising the steps of locating said article in an enclosure, said enclosure having a means for providing said protection comprises particles, said particles comprising a protecting metal chosen from the group consisting of aluminum and copper wherein said particles are embedded in said polymer by introducing and dispersing particulates into said polymer and wherein said surface area of said protecting metal is sufficient to regard said corrosion.
Dependencies are inferred from the claim text.