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A high-quality and rapid crystal growth control method

A growth control and crystal growth technology, applied in the direction of crystal growth, single crystal growth, single crystal growth, etc., can solve the problems of difficult measurement of growth solution, adverse effects of crystal quality, etc., to achieve quality assurance, fast growth rate, stable growth effect of speed

Active Publication Date: 2021-02-19
合肥九州龙腾科技成果转化有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] During the crystal growth process of the cooling method, it is difficult to measure the supersaturation of the growth solution, and the cooling rate can only be set according to experience, which is likely to adversely affect the quality of the crystal

Method used

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  • A high-quality and rapid crystal growth control method
  • A high-quality and rapid crystal growth control method
  • A high-quality and rapid crystal growth control method

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Embodiment Construction

[0032]The specific implementation of the patent of the present invention will be further described below in conjunction with the accompanying drawings.

[0033] An application of a crystal growth process aspect ratio control method, including the following implementation process:

[0034] (1) Potassium dihydrogen phosphate growth solution is loaded into the crystal growth tank, and after the crystal nucleus is placed on the crystal carrier, the system enters the operation preparation state, and the initial setting value is set on the touch screen: TEM(0)=65.00 °C, TEM max =65°C, TEM min =25°C; ΔTEM(0)=0.02°C / hour, ΔTEM max =0.05°C / hour, ΔTEM min =0.01°C / hour; E(0)=3.00%, E max = 6.00%, E min =2.00%; F(0)=2.00%, F max = 4.00%, F min = 1.00%; H 1 (0) = 50.0mm, H 2 (0)=25.0mm, D(0)=50.0mm; k=0, T=0.

[0035] (2) The system enters the automatic operation state, and the timer T starts timing.

[0036] (3) P PLC controls the DC servo motor to drive the crystal carrier to ...

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Abstract

The invention relates to a high-quality and rapid crystal growth control method, which belongs to the field of production process control. The crystal growth system includes a growth device, a control device and a vision-based size detection device. The DC servo motor drives the crystal carrier to rotate clockwise, stop, rotate counterclockwise, stop, and cycle. When the rotation of the crystal carrier stops, the size of the crystal is detected online by the vision system, and the cooling rate of the growth solution is adjusted according to the rules. The method of the invention reflects the supersaturated state of the growth solution through the growth rate of the crystal, which can not only ensure the stable and fast growth rate of the crystal, but also ensure the quality of the crystal.

Description

technical field [0001] The invention relates to a novel crystal growth control system, in particular to a high-quality and rapid crystal growth control method, which belongs to the field of production process control. Background technique [0002] Potassium dihydrogen phosphate crystals are a class of excellent electro-optic nonlinear optical materials because of their large electro-optic and nonlinear optical coefficients, high optical damage threshold, low optical absorption, high optical uniformity and good transmission It is widely used in high-tech fields such as laser, electro-optical modulation and optical fast switching due to its characteristics such as wavelength band. [0003] Potassium dihydrogen phosphate crystals grow in an aqueous solution of potassium dihydrogen phosphate, and the driving force for crystal growth comes from the supersaturation of the solution. Since the solubility and temperature coefficient of potassium dihydrogen phosphate crystals in wate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/02G01B11/06C30B7/08C30B29/14
CPCC30B7/08C30B29/14G01B11/02G01B11/0608
Inventor 潘丰王蕾
Owner 合肥九州龙腾科技成果转化有限公司
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