Abstract: A fuel cell separator 60 having a metal plate and an anticorrosion resin coating layer 55 formed thereon is provided, with which adhesion between the resin coating layer 55 and its counterpart member is further increased and the durability of a fuel cell unit is improved. In forming the fuel cell separator 60 having a separator substrate 50 that is a metal plate and an anticorrosion resin coating layer 55 formed thereon, the resin coating layer 55 is formed such that it has a surface roughness Ra of 0.5 to 13.5 ?m. Increasing the surface roughness will produce an anchoring effect, which will improve the adhesive force at the interface. The aforementioned surface roughness Ra can be obtained either with the use of fillers that are mixed into the resin coating layer 55 or with external force applied to the surface of the resin coating layer 55 by means of shot blasting, for example.

Abstract: A fuel cell separator 60 having a metal plate and an anticorrosion resin coating layer 55 formed thereon is provided, with which adhesion between the resin coating layer 55 and its counterpart member is further increased and the durability of a fuel cell unit is improved. In forming the fuel cell separator 60 having a separator substrate 50 that is a metal plate and an anticorrosion resin coating layer 55 formed thereon, the resin coating layer 55 is formed such that it has a surface roughness Ra of 0.5 to 13.5 ?m. Increasing the surface roughness will produce an anchoring effect, which will improve the adhesive force at the interface. The aforementioned surface roughness Ra can be obtained either with the use of fillers that are mixed into the resin coating layer 55 or with external force applied to the surface of the resin coating layer 55 by means of shot blasting, for example.

Abstract: A fuel cell separator 60 having a metal plate and an anticorrosion resin coating layer 55 formed thereon is provided, with which adhesion between the resin coating layer 55 and its counterpart member is further increased and the durability of a fuel cell unit is improved. In forming the fuel cell separator 60 having a separator substrate 50 that is a metal plate and an anticorrosion resin coating layer 55 formed thereon, the resin coating layer 55 is formed such that it has a surface roughness Ra of 0.5 to 13.5 ?m. Increasing the surface roughness will produce an anchoring effect, which will improve the adhesive force at the interface. The aforementioned surface roughness Ra can be obtained either with the use of fillers that are mixed into the resin coating layer 55 or with external force applied to the surface of the resin coating layer 55 by means of shot blasting, for example.

Abstract: A method of manufacturing a fuel cell separator, the method including: subjecting the peripheral surfaces other than the respective gas passages of a pair of separator substrates formed from stainless steel to a cathodic electrolytic treatment within an alkali solution, thereby forming an iron-based hydrated oxide film on the peripheral surfaces of the pair of separator substrates (S200), conducting a water treatment by wetting the surface of the iron-based hydrated oxide film with water (S202), performing electrodeposition coating of an electrocoating material containing an aqueous resin onto at least one of the water-treated iron-based hydrated oxide films provided on the pair of separator substrates (S204), and baking the aqueous resin obtained by electrodeposition coating (S206).

Abstract: A fuel cell separator 60 having a metal plate and an anticorrosion resin coating layer 55 formed thereon is provided, with which adhesion between the resin coating layer 55 and its counterpart member is further increased and the durability of a fuel cell unit is improved. In forming the fuel cell separator 60 having a separator substrate 50 that is a metal plate and an anticorrosion resin coating layer 55 formed thereon, the resin coating layer 55 is formed such that it has a surface roughness Ra of 0.5 to 13.5 ?m. Increasing the surface roughness will produce an anchoring effect, which will improve the adhesive force at the interface. The aforementioned surface roughness Ra can be obtained either with the use of fillers that are mixed into the resin coating layer 55 or with external force applied to the surface of the resin coating layer 55 by means of shot blasting, for example.

Abstract: A method of manufacturing a fuel cell separator, the method including: subjecting the peripheral surfaces other than the respective gas passages of a pair of separator substrates formed from stainless steel to a cathodic electrolytic treatment within an alkali solution, thereby forming an iron-based hydrated oxide film on the peripheral surfaces of the pair of separator substrates (S200), conducting a water treatment by wetting the surface of the iron-based hydrated oxide film with water (S202), performing electrodeposition coating of an electrocoating material containing an aqueous resin onto at least one of the water-treated iron-based hydrated oxide films provided on the pair of separator substrates (S204), and baking the aqueous resin obtained by electrodeposition coating (S206).

Abstract: In view of the above-discussed state of the art, it is an object of the present invention to provide a method of adhesion of conductive materials which uses a water-based ecofriendly adhesive and can give uniform adhesive layers capable of leading to constant and high levels of adhesion strength and excellent in insulating properties even in the case of molded articles and the like. A method of adhesion of conductive materials comprising the step (1) of forming an adhesive surface having an adhesive resin layer on a conductive material by an electrodeposition step with an adhesive composition and the step (2) of joining an adherend surface of an adhesion target to the adhesive surface having the adhesive resin layer obtained in the step (1), wherein the adhesive composition comprises a hydratable functional group- and unsaturated bond-containing cationic resin composition.

Abstract: In view of the above discussed state of the art, it is an object of the present invention to provide a method of producing a laminate excellent in insulation and adhesion strength between a functional material and conductive material sandwiching that, without needing any organic solvent in production thereof, and laminates produced thereby. A method of producing a laminate which comprises the step (1) of forming, on each of two conductive materials, an adhesive resin layer by an electrodeposition step with a cationic electrodepositable adhesive composition comprising a cationic resin composition and the step (2) of joining the adhesive resin layer on each conductive material as obtained in the step (1) to each side of a functional material.

Abstract: A method of metal-plating electrode portions of a printed-wiring board includes copper-plating the overall surface of the printed-wiring board on which an electric circuit has been formed, forming a metal plating resist coating on the copper plated wiring board except for on the electrode portions, and subjecting the electrode portions, which are not covered with the resist coating, to an electrolytic metal plating process, at least once, and then removing the remaining resist coating. The resist coating formation and the electrolytic metal plating process may optionally be repeated a predetermined number of times. An etching resist coating is then formed on the circuit portion including the electrode portions, and the copper-plated portion is then removed except from the circuit portion by etching and then stripping the etching resist coating.