A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PROCEDE DE FABRICATION PAR FRITTAGE FLASH D'UNE PIECE DE FORME COMPLEXE
The invention relates to a method for manufacturing a metal, ceramic, or composite part (PF) by flash sintering, which comprises simultaneously applying, inside a die (M), a uniaxial pressure and an electric current to a device containing a powder constituent material, said uniaxial pressure being applied by means of at least two pistons (P1, P2) which slide toward one another inside said die and each of which has a bearing surface (F1, F2) contacting said material, said bearing surfaces engaging so as to define the shape of the part to be manufactured, characterised in that: said part has a complex shape, including at least one first slender portion (V), such as a rod, plate, bevel, or shell, and a second portion (B), such as a base, plinth, or solid part, which is not slender in the slender direction of said first portion, and in that said uniaxial pressure is applied in a direction (z) substantially parallel to the smallest dimension of said first portion of the part, or to one of the two smallest dimensions thereof if said part is a rod. The invention also relates to a device for implementing such a method, and to a turbine blade made of a TiAl intermetallic alloy or a metal/silicide composite sintered by flash sintering.
PROCEDE DE FABRICATION PAR FRITTAGE FLASH D'UNE PIECE DE FORME COMPLEXE
The invention relates to a method for manufacturing a metal, ceramic, or composite part (PF) by flash sintering, which comprises simultaneously applying, inside a die (M), a uniaxial pressure and an electric current to a device containing a powder constituent material, said uniaxial pressure being applied by means of at least two pistons (P1, P2) which slide toward one another inside said die and each of which has a bearing surface (F1, F2) contacting said material, said bearing surfaces engaging so as to define the shape of the part to be manufactured, characterised in that: said part has a complex shape, including at least one first slender portion (V), such as a rod, plate, bevel, or shell, and a second portion (B), such as a base, plinth, or solid part, which is not slender in the slender direction of said first portion, and in that said uniaxial pressure is applied in a direction (z) substantially parallel to the smallest dimension of said first portion of the part, or to one of the two smallest dimensions thereof if said part is a rod. The invention also relates to a device for implementing such a method, and to a turbine blade made of a TiAl intermetallic alloy or a metal/silicide composite sintered by flash sintering.
PROCEDE DE FABRICATION PAR FRITTAGE FLASH D'UNE PIECE DE FORME COMPLEXE
METHOD FOR MANUFACTURING A PART HAVING A COMPLEX SHAPE BY FLASH SINTERING
VERFAHREN ZUR HERSTELLUNG EINES TEILS MIT KOMPLEXER FORM DURCH FLASH-SINTERN
COURET ALAIN (author) / MONCHOUX JEAN-PHILIPPE (author) / DURAND LISE (author) / JABBAR HOURIA (author) / VOISIN THOMAS (author)
2016-08-17
Patent
Electronic Resource
French
PROCEDE DE FABRICATION DE PIECE DE FORME COMPLEXE PAR FRITTAGE SOUS PRESSION A PARTIR D'UNE PREFORME
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