Method for assembling parts made of SiC materials by means of non-reactive brazing in an oxidizing atmosphere, brazing compositions, and gasket and assembly obtained by said method

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United States of America Patent

PATENT NO 9776929
APP PUB NO 20140328615A1
SERIAL NO

14366432

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Abstract

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A method is described for assembling at least two parts made of silicon carbide based materials by non-reactive brazing in an oxidizing atmosphere, each of the parts comprising a surface to be assembled, wherein the parts are placed in contact with a non-reactive brazing composition, the assembly formed by the parts and the brazing composition is heated to a brazing temperature sufficient for completely or at least partially melting the brazing composition, or rendering the brazing composition viscous, and the parts and the brazing composition are cooled so as to form, after cooling the latter to ambient temperature, a moderately refractory joint. The non-reactive brazing composition is a composition A consisting of silica (SiO2), alumina (Al2O3), and calcium oxide (CaO), or a composition B consisting of alumina (Al2O3), calcium oxide (CaO), and magnesium oxide (MgO), and, before heating the assembly formed by the parts and the brazing composition to the brazing temperature, a supply of silicon in a non-oxidized form is carried out on the surfaces to be assembled of the parts to be assembled, and/or on the surface layers comprising the surfaces to be assembled of the parts to be assembled, and/or in the brazing composition.

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Patent Owner(s)

Patent OwnerAddress
COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESPARIS FRA PARIS PARIS

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chaumat, Valérie Saint-Paul de Varces, FR 10 73
Henne, Jean-François Bethune, FR 7 41
Hodaj, Fiqiri Grenoble, FR 4 19

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