Seed crystal rod for large-size crystal growth

By setting holes at the bottom and top in the seed rod, the air flow takes away heat, which solves the problem of seed crystal deformation or breaking due to heat accumulation, extends the service life of the seed crystal and prevents the crucible from being damaged.

CN222666095UActive Publication Date: 2025-03-25BEIJING QIFENG LANDA OPTICAL TECH DEV CO LTD
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Patent Information

Application Number
CN202421441377.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-22
Publication Date
2025-03-25
Estimated Expiration
2034-06-22

AI Technical Summary

Technical Problem

During the growth of large-sized calcium fluoride single crystals, seed crystals are prone to deform or break due to heat accumulation, resulting in cracking or damage to the crucible and causing economic losses.

Method used

A seed rod for large-size crystal growth is designed with hollow inside and openings in communication with the inner cavity at the bottom and top, using air flow to take away the heat from the bottom of the seed rod, reducing the risk of deformation and fracture caused by heat accumulation.

Benefits of technology

The heat at the bottom of the seed rod is quickly taken away by air flow, reducing the possibility of the seed crystal deforming or breaking due to heat accumulation, extending the service life of the seed crystal, and preventing the crucible from rupture or damage.

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Abstract

The utility model discloses a seed crystal rod for large-size crystal growth, the seed crystal rod is hollow, the bottom and top of the seed crystal rod are both provided with openings communicated with the inner cavity of the seed crystal rod, the seed crystal rod prepared by the utility model is helpful for rapid heat dissipation of a seed crystal, the deformation of the seed crystal caused by accumulation of heat on the seed crystal is avoided, and the service life of the seed crystal rod is prolonged. And therefore, the crystal is lengthened or broken.
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