Method for preparing magnesia crystal by using temperature control arc furnace

An electric arc furnace and magnesium oxide technology, applied in the field of material science, can solve problems such as poor temperature control ability, and achieve the effects of saving energy, improving output and quality, and reducing costs

Inactive Publication Date: 2005-09-07
LIAONING ZHONGDA SUPERCONDUCTING MATERIAL
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an arc heating method that can effectively control the temperature field required for crystal growth, solve the problem of poor temperature control ability in the prior art, and improve the yield and quality of crystals

Method used

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  • Method for preparing magnesia crystal by using temperature control arc furnace
  • Method for preparing magnesia crystal by using temperature control arc furnace

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Embodiment Construction

[0018] Specific embodiments of the present invention will be described in detail below in conjunction with technical solutions and accompanying drawings.

[0019] The specific embodiment of the temperature-controlled electric arc furnace used in the present invention is as follows.

[0020] The side wall of the cylindrical furnace shell is composed of magnesia-carbon bricks as the inner insulation layer 6, and glass fiber reinforced plastic as the outer insulation layer 8, and there is an air gap 7 between the two layers of materials. lost. The metal bottom plate 9 at the bottom of the furnace is a stainless steel plate, and this bottom plate plays the dual role of heat conduction and support. In order to complete the real-time measurement of the temperature field in the furnace, temperature-sensing probes 17 are evenly distributed on the outer surface of the inner insulation layer, the lower surface of the metal bottom plate, and the upper surface of the water cooling device...

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Abstract

The invention relates to a method for preparing the magnesia crystal by the temperature-controlling arc furnace, which belongs to the material scientific and technical field. The method uses the arc furnace published by (an arc furnace for preparing magnesia crystal), uses the data from the temperature-sensitive device and the furnace temperature state which is computed by the presetted thermal field equation as the criterion to arc welding and cooling, and forms the thermal field avails to crystal growth through the copulation of the arc and cooling device. The invention can increase the yield and quality of the magnesia crystal and can be used for growing another high temperature crystal.

Description

technical field [0001] The invention belongs to the field of material science and technology, and relates to a method for preparing metal oxide crystals, in particular to a method for preparing magnesium oxide crystals with a temperature-controlled electric arc furnace. Background technique [0002] Magnesium oxide crystals have been applied to many high-tech fields, such as thin-film growth substrates for high-temperature superconducting devices, substrate substrates for semiconductor materials, protective films for plasma displays, high-temperature and high-precision optical materials, and high-temperature crucible materials. In the field of high-temperature superconductivity, magnesium oxide crystals have obvious price advantages and good performance compared with other materials (such as gallium arsenide, diamond, white sapphire, etc.) as thin film growth substrates and substrates of semiconductor materials. Although my country has the resource advantage of large reserve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B11/00C30B29/16
Inventor 王宁会王晓臣黄耀戚栋吴彦李国锋
Owner LIAONING ZHONGDA SUPERCONDUCTING MATERIAL
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