Four de fusion-solidification comportant une modulation des...

C - Chemistry – Metallurgy – 30 – B

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C30B 11/00 (2006.01) C30B 33/02 (2006.01) C30B 35/00 (2006.01)

Patent

CA 2743543

The furnace (1) for melting and solidifying a crystalline material (3) comprises a crucible (2), which has a bottom (4) and side walls (5), and means for heating the crystalline material by magnetic induction. The furnace includes at least one lateral thermal insulation system (6) placed on the periphery of the crucible (2) around the side walls (5). At least one lateral element of the lateral or thermal insulation system (6) moves, relative to the side walls (5), between an insulation position and a position that promotes thermal losses. The lateral thermal insulation system (6) has an electrical conductivity of less than 1 S/m and a thermal conductivity of less than 15 W/m/K.

Le four (1) de fusion et de solidification pour matériau cristallin (3) comporte un creuset (2) ayant un fond (4) et des parois latérales (5), des moyens de chauffage du matériau cristallin par induction magnétique. Le four comporte au moins un système latéral d'isolation thermique (6) disposé à la périphérie du creuset (2) autour des parois latérales (5). Au moins un élément latéral du système latéral d'isolation thermique (6) se déplace, par rapport aux parois latérales (5), entre une position d'isolation et une position favorisant les fuites thermiques. Le système latéral d'isolation thermique (6) a une conductivité électrique inférieure à 1S/m et une conductivité thermique inférieure à 15W/m/K.

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