Vertical horizontal Gradient freezing method is
shorted to VHGF method, which is a method used for producing large quantity sapphire
crystal. This technique is a vertical temperature gradient cooling system based
on the law, and the use of VGF grown GaAs crystal rods, low potential density
can reach high quality crystal rods. VGF is divided based on the law, the
combination of the horizontal temperature gradient cooling process, this way,
can long grain size (diameter and height) and long-grain shape is relatively
unrestricted.
Chunks of polycrystalline, produced by horizontal synthesis, are placed in a crucible with a seed crystal of the required orientation. The crucible is then placed vertically in a furnace and a temperature gradient is moved up the length of the crystal (away from the seed).
Single crystal growth propagates from the seed crystal and, because the crystal forms in the shape of the crucible, diameter control of the ingot is relatively simple.
If there is any other question refer to tungsten crucible for sapphire growth furnace, please feel free to contact us through the following methods:
Email:sales@chinatungsten.com
Tel.:+86 592 512 9696
Fax:+86 592 512 9797
Chunks of polycrystalline, produced by horizontal synthesis, are placed in a crucible with a seed crystal of the required orientation. The crucible is then placed vertically in a furnace and a temperature gradient is moved up the length of the crystal (away from the seed).
Single crystal growth propagates from the seed crystal and, because the crystal forms in the shape of the crucible, diameter control of the ingot is relatively simple.
If there is any other question refer to tungsten crucible for sapphire growth furnace, please feel free to contact us through the following methods:
Email:sales@chinatungsten.com
Tel.:+86 592 512 9696
Fax:+86 592 512 9797
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