Method for heating and melting precast shaped filler in sapphire crystal growth

A sapphire and crystal growth technology, applied in chemical instruments and methods, single crystal growth, crystal growth, etc., can solve problems such as high cost of crystal block materials, affecting the yield and quality of sapphire crystals, and difficulty in miniaturization

Inactive Publication Date: 2013-08-14
苏州海铂晶体有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] The crystal block material of the flame method is not only costly, but it is difficult to make it small, and there are large gaps when charging, and powder or other forms of powder are usually used to fill the gaps.
[0007] The powder and the briquettes and granules prepared from the powder are in the growing crystal, because the impurities contained in the raw material may form bubbles during the heating process, which will affect the yield and quality of the sapphire crystal

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  • Method for heating and melting precast shaped filler in sapphire crystal growth

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Embodiment Construction

[0021] The invention discloses a method for raising the temperature of a pre-cast shape filler in a sapphire growth crystal. The heating system is started, and the temperature rises from 25°C to 1650°C, wherein the temperature rise slope is 200°C / h; when the temperature reaches 1650°C, Modify the temperature increase slope to 30°C / h, and raise the temperature to 2000°C until the block is completely melted.

[0022] The technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] Dimensions of precast shapes:

[0024] The co...

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Abstract

The invention discloses a method for heating and melting a precast shaped filler in sapphire crystal growth, which comprises the following steps: starting a heating system to heat from 25 DEG C to 1650 DEG C, wherein the heating gradient is 200 DEG C/h; and after the temperature reaches 1650 DEG C, changing the temperature increase gradient to 30 DEG C/h, and further heating to 2000 DEG C until a block material is completely molten. The precast shaped filler disclosed by the invention causes less bubble defects in comparison with a crystal block treated by a flame method; the packed density of the precast shaped filler can be up to 2.6-2.8 g/cm<3>; and more materials can be filled under the condition of not changing the size of a crucible, thereby meeting the requirements for the density of the raw material in large-size sapphire crystal growth in China at present.

Description

technical field [0001] The invention relates to the technical field of sapphire crystal growth, and relates to a method for raising the temperature of the compound in the sapphire crystal growth, in particular to a method for raising the temperature of the filler in the sapphire crystal growth. Background technique [0002] Since 1885, Fremy, Feil and Wyse melted natural ruby ​​powder and potassium dichromate using hydrogen-oxygen flame to make the sensational "Geneva Ruby". During this period, in order to adapt to the development of science and technology and the special requirements of industrial production for the quality, size and shape of sapphire crystals, in order to improve the yield and utilization rate of sapphire crystals and reduce costs, the growth method of sapphire and its related theories were studied. A lot of research, the results are remarkable. Up to now, it has a high technical level and a large production capacity, and the crystal growth equipment for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B35/00C30B29/20
Inventor 周虹金启源方建雄
Owner 苏州海铂晶体有限公司
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