COATING SURFACE FOR INSULATING MATERIALS, METHOD OF OBTAINING IT AND ITS APPLICATION FOR PROTECTING INSULATING BOXES.

摘要

A coating surface on an insulating material substrate which secures the protection against electro-magnetic interference in corrosive means comprising two piled up metallic layers; the first layer in contact with the substrate is a nickel base allow layer containing approximately 2 percent to 10 percent in weight of an element of the group V B of the Periodical Table of the elements; the second is a silver surface layer or one of its alloys; the applications include insulating material boxes for electric or electronic components including a protection consisting of a surface coating of this type.