Gem-grade large monocrystal diamond multi-cavity composite structure, and preparation method and application thereof

A single crystal diamond, multi-cavity technology, applied in the application of ultra-high pressure process, etc., to achieve the effect of reducing cost, saving power and energy consumption, and improving uniformity

Active Publication Date: 2017-09-01
HENAN POWER NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is: according to the deficiencies in the existing gem-level large single crystal diamond synthesis device and synthesis process, the present invention provides a new gem-level large single crystal diamond multi-cavity synthesis structure and its preparation Methods and Applications

Method used

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  • Gem-grade large monocrystal diamond multi-cavity composite structure, and preparation method and application thereof
  • Gem-grade large monocrystal diamond multi-cavity composite structure, and preparation method and application thereof
  • Gem-grade large monocrystal diamond multi-cavity composite structure, and preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0045] See attached Figure 1~3 As shown, the gem-grade large single crystal diamond multi-cavity composite structure of the present invention includes a pressure transmission block 4 provided with an assembly cavity, an insulator 5 is arranged in the assembly cavity, and conductive plug assemblies are symmetrically arranged at the upper and lower ends of the insulator 5, and the conductive plug components are electrically conductive. The plug assembly includes a heating sheet 3, a metal sheet 2 and a conductive plug 1 arranged in sequence. The heating sheet 3 is connected to the heating pipe 12; the insulator 5 is provided with a plurality of cylindrical synthesis cavities 6, and the height of the cylindrical synthesis cavities 6 is equal to that of the insulator. 5. The height is consistent; a large single crystal growth component is arranged in the cylindrical synthesis chamber 6;

[0046] The large single crystal growth assembly comprises a crystal bed 10, a catalyst sheet...

Embodiment 2

[0047] Embodiment 2: basically the same as Embodiment 1, the difference is:

[0048] The heating sheet 3 is a sheet structure cut from high-purity graphite carbon rods; the heating tube 12 is a tube structure formed by high-purity graphite carbon rods, and the thickness of the tube wall is 1.2 ~2.0mm.

Embodiment 3

[0049] Embodiment 3: basically the same as Embodiment 1, the difference is:

[0050] The heating sheet 3 is a sheet structure cut from high-purity graphite carbon rods; the heating tube 12 is a tube structure formed by high-purity graphite carbon rods, and the thickness of the tube wall is 1.2 ~2.0mm; the insulator is a cylinder formed by mixing and pressing sodium chloride powder and zirconia powder.

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Abstract

The invention discloses a gem-grade large monocrystal diamond multi-cavity composite structure, and a preparation method and an application thereof. The multi-cavity composite structure comprises a pressure transfer block provided with an assembly cavity, wherein an insulator is arranged in the assembly cavity; conductive plug assemblies are symmetrically arranged at the upper end and the lower end of the insulator; the insulator is provided with a plurality of cylindrical synthesis cavities; a large monocrystal growth assembly is arranged in each cylindrical synthesis cavity; heating tubes are arranged in the cylindrical synthesis cavities; a crystal bed, a catalyst sheet, a carbon source, a pressure transfer sheet and an insulating tube are sequentially arranged in each cylindrical synthesis cavity from bottom to top; each crystal bed, each catalyst sheet, each carbon source and each pressure transfer sheet are sequentially arranged in the corresponding cylindrical synthesis cavity from bottom to top; each insulating tube coats the peripheries of the corresponding carbon source and catalyst sheet and is arranged between the corresponding pressure transfer sheet and crystal bed; each heating tube coats the peripheries of the corresponding pressure transfer sheet, insulating tube and crystal bed; an assembly synthesis block is arranged into the assembly cavity; and the conductive plug assemblies are symmetrically arranged at two sides of the assembly synthesis block to obtain a multi-cavity synthesis structure. By adopting the gem-grade large monocrystal diamond multi-cavity composite structure, stable high-quality synthesis of 1-5carat large monocrystal can be achieved.

Description

[0001] 1. Technical field: [0002] The invention belongs to the technical field of superhard material synthesis, and in particular relates to a gem-level large single crystal diamond multi-cavity synthesis structure and its preparation method and application. [0003] 2. Background technology: [0004] Diamond is a widely used extreme functional material with excellent physical properties such as high hardness, good wear resistance, good thermal conductivity, semiconductor and good light transmission. my country synthesized industrial-grade diamond for the first time in 1963. After more than 50 years of joint efforts by people in the industry, my country has become the world's leading producer of diamonds. However, we are far behind advanced foreign countries such as Europe, America and Japan in terms of synthetic research on gem-grade diamonds. [0005] With the continuous advancement of science and technology, gem-grade diamond has been widely used in ultra-precision machin...

Claims

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Application Information

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IPC IPC(8): B01J3/06
CPCB01J3/06B01J2203/0655B01J2203/068
Inventor 邵增明张存升
Owner HENAN POWER NEW MATERIAL
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