Noble metal plating of titanium components

Details Noble metal plating of titanium components Noble metal plating of titanium components

H - Electricity

01

M

H01M 8/02 (2006.01) C23C 8/20 (2006.01) C23C 8/44 (2006.01) C23C 28/00 (2006.01) C25D 5/28 (2006.01) C25D 5/38 (2006.01) C25D 5/50 (2006.01)

Patent

CA 2646189

The present invention provides technology for noble metal plating of titanium surfaces. A process such as the following would be carried out when manufacturing a partially gold-plated separator for a fuel cell, for example. First, a titanium component made of titanium or titanium alloy is prepared for use as the fuel cell separator (S10). This titanium component is a titanium component whose surfaces are coated with carbon-containing substance. This titanium component is then subjected to a first heat treatment at a prescribed first temperature of between 300 and 700 degrees Celsius (S20). Gold plating of the surfaces of the heat-treated titanium component is then carried out (S80). I this way it is possible to more easily carry out gold electrolytic plating of titanium surfaces.

Technique de placage au métal noble d'une surface en titane. Pour la fabrication d'un séparateur en partie plaqué or pour piles à combustible, par exemple, on effectue la procédure suivante. On prépare tout d'abord un élément en titane qui est constitué de titane ou d'un alliage de titane et est destiné à être utilisé comme un séparateur pour piles à combustible (S10). Cet élément en titane est un élément en titane ayant une substance contenant du carbone adhérent à sa surface. On soumet cet élément en titane à un premier traitement thermique à une première température donnée dans la plage de 300-700°C (S20). Ensuite, on plaque avec de l'or la surface de l'élément en titane qui a subi le traitement thermique (S80). Ceci permet de réaliser plus facilement un placage or galvanique de la surface en titane.

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