Brazing method Al2O3 ceramic and metallic material
A technology of metal materials and brazing methods, applied in the field of brazing of Al2O3 ceramics and metal materials, can solve the problems of low joint strength and low air tightness of joints, achieve good compactness, easy control, reduce processing temperature and the effect of time
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specific Embodiment approach 1
[0008] Specific implementation mode one: present implementation mode A1 2 o 3 The brazing method of pottery and metal material is to carry out according to the following steps: one, take acetone as medium to Al 2 o 3 The ceramics were ultrasonically cleaned, and the surface of the active metallized alloy foil was cleaned with acetone after the oxide film was removed; 2. The active metallized alloy foil was placed on Al 2 o 3 On the pre-connected surface of the ceramic, the thickness of the foil is 10-400 μm. Put the assembled workpiece into the vacuum heating furnace and vacuumize until the vacuum degree reaches 1.0×10 -3 After Pa, heat up to 700-1000°C at a rate of 10-30°C / min and keep it warm for 5-15 minutes, then cool down to 300-500°C at a rate of 5-10°C / min, turn off the power and naturally cool to room temperature, that is get active metallized Al 2 o 3 Ceramics; 3. Clean the metal materials. After removing the surface oil with a degreasing agent, first wash with ...
specific Embodiment approach 2
[0010] Specific embodiment two: the difference between this embodiment and specific embodiment one is: Al in step one 2 o 3 The ceramics are 95 porcelain or 99 porcelain. Other steps and parameters are the same as those in Embodiment 1.
specific Embodiment approach 3
[0011] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the active metallization alloy in step 1 contains 5%-15% active elements and 70%-85% Al eutectic elements by weight percentage. Other steps and parameters are the same as those in Embodiment 1.
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