METHOD FOR MANUFACTURING SEPARATOR FOR FUEL CELL

• Main Authors: TAKAGAKI, MASASHI, TAKEUCHI, YUTAKA, KAWAMURA, TOSHIKI, KOBAYASHI, KOJI
• Format: Patent
• Language: English; French; Japanese
• Published: 29.12.2005
• Edition: 7
• Subjects: BASIC ELECTRIC ELEMENTS; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

A method for manufacturing a titanium separator to be used in a fuel cell. In this method, an oxide film (66) is removed from a surface (21) of a separator material (51) by sputtering. Then, the separator material is heated within a range of 350°C -500°C in a nitriding atmosphere which includes a nitriding gas (55), and a plasma nitriding process is performed to form a titanium nitride film (71) on the surface of the separator material. Il est prévu un procédé de fabrication d'un séparateur de titane à utiliser dans une cellule électrochimique. Selon ce procédé, on enlève un film d'oxyde (66) d'une surface (21) d'un matériau séparateur (51) par pulvérisation cathodique. Alors, le matériau séparateur est porté à une température comprise entre 350°C et 500°C dans une atmosphère de nitruration qui comprend un gaz de nitruration (55) et un processus de nitrure plasma est réalisé pour constituer un film de nitrure de titane (71) à la surface du matériau séparateur.