Method for the refractory assembly of a carbon material and a copper alloy
AssigneeCommissariat a l'Energie Atomique
InventorsValérie Chaumat, Nadia Miloud-Ali
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Abstract
The invention relates to a method for assembling at least one part made of a porous carbon material with at least one part made of a copper-rich metal material, and to an alloy paste used to implement same. The method according to the invention includes a step comprising the use of an alloy based on copper and silicon, having formula I CuxSiy, wherein x and y are atomic percentages with 25≦x≦60, 40≦y≦75 and x+y≧95%, in order to assemble at least one part made of a porous carbon material with at least one part made of a copper-rich metal material. The invention is particularly suitable for use in the field of thermal engineering.
Claims5
A method of assembling at least one part made of a porous carbon-based material with at least one part made of a copper-rich metallic material, comprising the following steps:
- a) deposition of an alloy based on copper and silicon having the following formula:
- CuxSiy
- in which x and y are atomic percentages where x is 60 and y is 40, or on the assembly surface of the at least one part made of a porous carbon-based material, so as to have an amount of brazing alloy of between 50 and 500 mg/cm2;
- b) heating of the whole assembly obtained in step a), in a vacuum or in an inert atmosphere, so as to melt said alloy or said paste;
- c) contacting of the whole assembly obtained in step b) with the assembly surface of said at least one part made of a copper-rich metallic material;
- and
- d) heating of the whole assembly obtained in step c) at a temperature below the melting point of said at least one part made of a copper-rich metallic material and below the melting point of said alloy or of said paste, in a vacuum or in an inert atmosphere.
Dependencies are inferred from the claim text.