Method for producing a fluidtight and heat curable seal between metal objects and a body of vitroceramic material
AssigneesQuantel Limited, Societe Francaise d'Equipements Pour la Navigation Arienne-S.F.E.N.A.
InventorsGuy Lascar, Jean-Jacques Roland
Life of this patent
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Abstract
A process for producing a fluidtight seal between a body of a vitroceramic material and a metal element intended to be part of the construction of a gas laser and in particular a laser gyrometer includes interposing between the surfaces of the body of vitroceramic material and the metal element to be sealed a joining member of a metal capable of diffusing into the vitroceramic material, and subjecting the assembly thus formed to a thermo-compression operation so as to result in a superficial diffusion of the material of the joining member into the facing surfaces of the body of vitroceramic material and the metal element.
Claims6
A method for producing a fluidtight seal between a body of vitroceramic material formed of an amorphous phase and a quartzic crystalline phase .beta. and a metal element intended to form part of the construction of a gas laser, and in particular a laser gyrometer, said method comprising the steps of:
- interposing between surfaces to be sealed of said body of said vitroceramic material formed of an amorphous phase and a quartzic crystalline phase .beta. and said metal element an annular joining member of aluminum capable of diffusing into said vitroceramic material;
- and
- subjecting the assembly thus formed to a thermo-compression operation comprising a preliminary step of heating the assembly to a temperature required to provide diffusion at the interface between said vitroceramic material and said aluminum annular joining member, said preliminary heating step being followed by a step of compression of the assembly in order to provide a plastic deformation of the joining member, so as to cause a superficial diffusion of the aluminum material of said annular joining member into the facing surfaces of said body of vitroceramic material and said metal element.
Dependencies are inferred from the claim text.