Commissariat a L'energie Atomique

Snecma

Institut National Polytechnique De Grenoble

Joël Michel Daniel Benoit

Olivier Gillia

Pascal Revirand

Jean-Francois Fromentin

Jean-François Fromentin

Fiqiri Hodaj

Valerie Chaumat

Nikolas Eustathopoulos

Alexey Koltsov

An assembly between a metal piece and a ceramic material piece made of SiC and/or C based ceramic material. The assembly includes a stack structure including the following elements assembled together in pairs in this order, by brazing: the metal piece; a first intermediate piece; a second intermediate piece; and the ceramic material piece. The second intermediate piece is made of another ceramic material, that is chemically less reactive relative to metals than are SiC or C, and that presents a coefficient of expansion smaller than that of the material constituting the metal piece. The first intermediate piece is made of metal and can deform to compensate for expansion difference between the metal piece and the second intermediate piece. The assembly can be used in a turbomachine.

Joint between a metal part and a ceramic part based SiC and/or C

An assembly including a metal piece, a piece made of ceramic material, and at least one intermediate connection element assembled to each of the pieces by brazing. The intermediate connection element includes a deformable sheet presenting at least two flat zones brazed to respective ones of the pieces, the two flat zones being interconnected by a deformable zone presenting at least two free undulations oriented in alternation towards the metal piece and towards the piece made of ceramic material.

Brazed joint between a metal part and a ceramic part

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Cesson la Foret, France

Joël Michel Daniel Benoit