Component has an outer coating for corrosion resistance or preventing electrical breakdown, applied as a thin porous layer and impregnated with plastic

The component comprises a base member (1) coated partially or completely with one or more porous layers (9) of metallic or non-metallic material. The coating layer is at least 0.1 mm thick and the pores are subsequently impregnated by plastic in a vacuum. Independent claims are also included for: (a) a roll with a cylindrical body(1) of metal or fiber-reinforced plastic with a coating of electrically non-conductive fiber reinforced plastic; (b) a process for producing a component in which a porous metallic or non-metallic material (3) is applied to the outer surface (2) of the base member and the pores impregnated with plastic; (c) a process for manufacturing rolls in which a porous electrically insulating ceramic layer is applied to the cylindrical body before impregnation by plastic; (d) a process for manufacturing components with a body coated in porous corrosion resistant material (3) impregnated with plastic; (e) a coating method for protecting the surfaces of components; (f) a porous corrosion protection layer on a substrate; and (g) use of the claimed layer as corrosion protection. Die Erfindung betrifft eine Walze, aufweisend einen zylindrischen Grundkörper (1), auf dem mindestens eine Schicht aus einem dielektrischen Werkstoff aufgebracht ist, wobei die mindestens eine Schicht (9) im wesentlichen einen elektrisch isolierenden keramischen Werkstoff (3) enthält, ein- oder mehrlagig und mindestens 0,1 mm dick ist, dadurch gekennzeichnet, daß die mindestens eine Schicht (9) bis zu einer Tiefe von wenigstens 20% der Schichtdicke (9) mit einem polymerisierbaren Kunstharz infiltriert ist.