A kind of electromagnetic ultrasonic brazing method for sic ceramics
A technology of electromagnetic ultrasonic and brazing method, applied in the field of SiC ceramic welding, can solve problems such as large residual stress of joints, cracking of base materials, and difficulty in low-temperature connection, and achieve the effects of low production cost, improved joint strength, and improved comprehensive mechanical properties.
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Embodiment 1
[0025] This electromagnetic ultrasonic brazing method for SiC ceramics includes the following steps:
[0026] Step 1, the width of the solder foil 2 is processed to be completely consistent with the width and size of the SiC ceramic 6; the solder foil 2 is a Sn-Zn-Ti-Al foil.
[0027] Step 2: Grinding the surfaces of the solder foil 2 and the SiC ceramic 6 with sandpaper, and cleaning with acetone for 10-30 min.
[0028] Step 3. Fill the solder foil 2 processed in step 2 between the two surfaces of the SiC ceramics 6 to be welded, so that the two SiC ceramics 6 are horizontally placed side by side, and another solder foil 2 is horizontally placed between the two surfaces. on the upper edge of each surface to be welded, and put them in the muffle furnace, set it directly above the heating device 1, raise the temperature to 100 °C at a rate of 10 °C / min and keep it for 8 minutes, and then set it in the vertical direction In the static magnetic field, the permanent magnet 3 and ...
Embodiment 2
[0030] This electromagnetic ultrasonic brazing method for SiC ceramics includes the following steps:
[0031] Step 1, the width of the solder foil 2 is processed to be completely consistent with the width and size of the SiC ceramic 6; the solder foil 2 is a Sn-Zn-Ti-Al foil.
[0032] Step 2: Grinding the surfaces of the solder foil 2 and the SiC ceramic 6 with sandpaper, and cleaning with acetone for 10-30 min.
[0033] Step 3. Fill the solder foil 2 processed in step 2 between the two surfaces of the SiC ceramics 6 to be welded, so that the two SiC ceramics 6 are horizontally placed side by side, and another solder foil 2 is horizontally placed between the two surfaces. on the upper edge of each surface to be welded, and put them in the muffle furnace, set it directly above the heating device 1, raise the temperature to 400 °C at a rate of 30 °C / min and keep it for 10 minutes, and then set it in the vertical direction In the static magnetic field, the permanent magnet 3 and...
Embodiment 3
[0035] This electromagnetic ultrasonic brazing method for SiC ceramics includes the following steps:
[0036] Step 1, the width of the solder foil 2 is processed to be completely consistent with the width and size of the SiC ceramic 6; the solder foil 2 is a Sn-Zn-Ti-Al foil.
[0037] Step 2: Grinding the surfaces of the solder foil 2 and the SiC ceramic 6 with sandpaper, and cleaning with acetone for 10-30 min.
[0038] Step 3. Fill the solder foil 2 processed in step 2 between the two surfaces of the SiC ceramics 6 to be welded, so that the two SiC ceramics 6 are horizontally placed side by side, and another solder foil 2 is horizontally placed between the two surfaces. on the upper edge of each surface to be welded, and put them in the muffle furnace, set it directly above the heating device 1, raise the temperature to 260 °C at a rate of 20 °C / min and keep it for 5 minutes, and then set it in the vertical direction In the static magnetic field, the permanent magnet 3 and ...
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