Method for protecting seed crystal layer during production of cast single crystal
A seed crystal layer and single crystal technology is applied in the field of protection of the seed crystal layer during the production of cast single crystals, which can solve the problems affecting the quality of cast single crystals, easy nucleation, etc., so as to reduce the probability of nucleation and growth, and reduce the number of nuclei. crystal, the effect of reducing the probability of dislocation
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[0034]Specific Example 2
[0035]Referencefigure 2 When producing cast single crystals, a method for protecting the seed layer is provided, which includes the following steps:
[0036]Step a: Prepare a protective plate, the size of the protective plate is 950mm×950mm×20mm, which matches the size of the G6 crucible, and the material of the protective plate is silicon material.
[0037]Step b: Prepare a small rectangular parallelepiped shape support leg, the size of the support leg is 30mm×30mm×10mm, and the material of the support leg is silicon material.
[0038]Step c: Pull the single crystal rod to remove the edge skin, and then cut to obtain a cuboid-shaped seed crystal, the size of the seed crystal is 158mm×158mm×20mm.
[0039]Step d: Lay the seed crystal on the bottom of the crucible to form a complete seed crystal layer.
[0040]Step e: Place the small rectangular parallelepiped support legs around the seed crystal layer, only four corners of the seed crystals are subjected to compressive stres...
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