Corrosivity of quartz sight glass
When the molten silicon pulling silicon single crystals of quartz sight glass corrosion: the direct method 9CZ) manufacturing monocrystalline silicon, monocrystalline silicon production accounted for about 90%, is widely used in integrated circuits, power electronic components etc., must adopt the direct method of quartz glass crucible for melting silicon single crystal pulling vessel, temperature 1447 - 5 DEG C, the melting of silicon there is a certain degree of corrosion on the quartz sight glass, although the amount of corrosion is very small, but because the silicon crystals require high purity metal impurities in quartz glass to silicon single crystal. So the purity of the quartz glass crucible is an important property.

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