Sealed flexible link between a metal substrate and a ceramic...

C - Chemistry – Metallurgy – 25 – B

Patent

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Details

C25B 9/04 (2006.01) F16J 15/08 (2006.01) H01M 8/02 (2006.01)

Patent

CA 2710429

The invention relates to a sealed flexible link (5) between a metal substrate (3) and a ceramic substrate (2) that are separated from each other, in which the ceramic substrate (2) includes a back-tapered groove (20). According to the invention, the link comprises: a metal element (30) having an end (300) connected to the metal substrate and another end (301) housed in the groove of the ceramic substrate, the metal element being elastically deformable both in the groove, along a direction radial to the latter, and in the separation space between the metal substrate and the ceramic substrate along the separation direction; and a sealant (50) which has a higher thermal expansion coefficient than the ceramic substrate and is bonded to the end of the metal element housed in the back-tapered groove, the sealant being in direct contact with part of the height of the convergent sidewalls (200) of said groove (20).

L'invention concerne une liaison souple étanche (5) entre un substrat métallique (3) et un substrat céramique (2) séparés l'un de l'autre dans lequel le substrat céramique (2) comprend une gorge (20) en contre-dépouille, Selon l'invention, la liaison comprend: - un élément métallique (30) comportant une extrémité (300) reliée au substrat métallique et une autre extrémité (301) logée dans la gorge du substrat céramique, l'élément métallique étant élastiquement déformable à la fois dans la gorge selon une direction radiale à cette dernière et, dans l'espace de séparation entre le substrat métallique et le substrat céramique selon la direction de séparation, - une masse (50) formant joint, de coefficient de dilatation thermique supérieur à celui du substrat céramique et collée à l'extrémité de l'élément métallique logée dans la gorge en contre- dépouille, le joint épousant avec contact direct une partie de la hauteur des parois latérales convergentes (200) de cette dernière (20).

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