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Monocrystal growing furnace in multiple falling crucible method

A multi-crucible and growth furnace technology, which is applied in the directions of single crystal growth, crystal growth, self-solidification, etc., can solve the problems that cannot meet the needs of large-scale production, and achieve the effect of preventing the position of the crucible from changing

Inactive Publication Date: 2009-01-14
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although this invention breaks through the limitation that a single crucible can only grow a single crystal, it still has the following limitations like all original single crystal growth furnaces: 1. It can only be used for the growth of lead tungstate crystals; The need for mass production

Method used

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  • Monocrystal growing furnace in multiple falling crucible method
  • Monocrystal growing furnace in multiple falling crucible method
  • Monocrystal growing furnace in multiple falling crucible method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: A multi-crucible descending method single crystal growth furnace, including a furnace body 1 and a lifting platform 2 made of Morgan bricks, a furnace body 3 is provided in the furnace body 1, and the furnace chamber 3 includes a high temperature zone 31, a growth zone 33 and a Low temperature zone 32, the parameter of furnace 3 is: the furnace height H1=750mm of high temperature zone 31; The furnace height H2=360mm of low temperature zone 32; The furnace height H3=60mm of growth zone 33; The hearth width D2=160mm of the low temperature zone 32, the whole furnace length L=1250mm, two asbestos boards 4 are arranged at the furnace mouth of the low temperature zone 32, guide rails (not shown) are provided on the furnace body 1, and the asbestos boards 4 are provided with The guide rail groove (not shown) matched with the guide rail, the asbestos board 4 is provided with a synchronous drive mechanism (not shown) to make the asbestos boards 4 on both sides open ...

Embodiment 2

[0022] Embodiment two: other structures are identical with embodiment one, and difference is that the hearth width D1=120mm of high temperature zone 31; Bismuth Oxide (BGO) crystals.

Embodiment 3

[0023] Embodiment 3: Other structures are the same as Embodiment 1, except that the furnace width D1=135mm in the high temperature zone 31; the furnace width D2=270mm in the low temperature zone 32, and the opening width D3 of the asbestos board 4 is 270mm.

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Abstract

The monocrystal growing furnace in multiple falling crucible method includes one furnace body and one elevating platform, the furnace body has hearth, and the elevating platform has 1-15 crucible muffs with 1-2 crucible each set along the hearth. The hearth includes one high temperature region, one growth region and one low temperature region, and features the low temperature region of width 2 times that of the high temperature region and the hearth width regulator set in the low temperature region. The present invention is superior in that regulating the hearth width ratio between the high temperature region and the low temperature region can regulate the temperature gradient in the growth region to meet the requirement of growing different kinds of crystal on the temperature field and that 1-30 different monocrystals may be grown simultaneously in the furnace.

Description

technical field [0001] The invention relates to an optical crystal growth furnace, in particular to a multi-crucible descending method single crystal growth furnace. Background technique [0002] Among the existing optical crystal growth methods, the crucible drop method is one of the main methods. The traditional single crystal growth furnace uses a single crucible to grow a single crystal, but the growth efficiency is low. The Chinese Invention Patent No. 94114075.X authorized by the announcement on May 26, 1999 discloses a new technology for growing large-sized, high-quality, multiple scintillation lead tungstate (PWO) simultaneously by using the crucible drop method, which can grow simultaneously 2, 4 or 8 PWO crystals. However, although this invention breaks through the limitation that a single crucible can only grow a single crystal, it still has the following limitations like all original single crystal growth furnaces: 1. It can only be used for the growth of lead ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B11/00
Inventor 黄国松徐铁峰聂秋华戴世勋
Owner NINGBO UNIV