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Pyrophyllite synthetic block for solving decompression and deflation cannon of synthetic diamond and preparation method of pyrophyllite synthetic block

A technology for synthesizing diamonds and synthetic blocks, which is applied in the field of pyrophyllite synthetic blocks and its preparation, which can solve the problems of surrounding object hazards, diamond breakage, diamond large stress, etc., and achieve the effects of simplifying the process, saving time and manpower

Inactive Publication Date: 2018-06-22
TONGREN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the model of specific synthesis equipment and the market price of tungsten carbide anvil, the price of a tungsten carbide anvil is about 3000-18000 yuan, which will inevitably increase the cost of diamond industrialization
In addition, it will take a certain amount of time to replace the tungsten carbide anvil, which will delay the production or experiment cycle; (2) at the moment of deflation, the sudden drop (0.1-0.6GPa) in the internal pressure of the pyrophyllite block will cause diamond A large internal stress is generated instantly, which seriously affects the hardness and optical properties of the diamond, and even directly causes the diamond to be broken, and the broken diamond has low practical value; (3) at the moment of deflation, there will be small particles The material flying out will cause certain harm to the surrounding objects, and sometimes even cause personal safety

Method used

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  • Pyrophyllite synthetic block for solving decompression and deflation cannon of synthetic diamond and preparation method of pyrophyllite synthetic block
  • Pyrophyllite synthetic block for solving decompression and deflation cannon of synthetic diamond and preparation method of pyrophyllite synthetic block

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preparation example Construction

[0018] The embodiment of the present invention provides a method for preparing pyrophyllite synthetic blocks for synthetic diamond pressure relief and deflation guns, including:

[0019] Analytical pure iron oxide (Fe 2 o 3 ) powder, since the iron oxide powder is difficult to be directly coated on the pyrophyllite composite block, therefore, the iron oxide powder is diluted with a diluent so that the iron oxide powder can be evenly coated on the pyrophyllite composite block. The purity of analytically pure iron oxide powder is not less than 99.7%, and superior pure iron oxide can also be selected. Considering cost and effect, analytically pure iron oxide is preferred.

[0020] The selection of the diluent should follow two principles: (1) The selected liquid should be chemically inert and cannot be mixed with pyrophyllite, tungsten carbide, Fe 2 o 3 etc.; (2) the selected liquid is volatile. Further, in a preferred embodiment of the present invention, the diluent includes...

Embodiment 1

[0027] This embodiment provides a synthetic block of pyrophyllite, which is mainly made by the following steps:

[0028] Select the particle size as 150 mesh to analyze pure iron oxide (Fe 2 o 3 ) powder 5g, dilute the iron oxide powder with 136g absolute ethanol, and fully stir evenly.

[0029] Fe with a soft brush 2 o 3 The powder mixture is evenly applied to the edges of the six sides of the pyrophyllite composite block according to the predetermined width, that is, the junction of two adjacent surfaces of the pyrophyllite composite block. Fe 2 o 3Width of powder coating=(side length of pyrophyllite synthetic block-side length of tungsten carbide atop hammer face) / 2.

[0030] The treated pyrophyllite composite block was dried at 90° C. for 40 minutes to ensure that the absolute ethanol was completely volatilized to obtain a pyrophyllite composite block coated with an iron oxide coating.

Embodiment 2

[0032] This embodiment provides a synthetic block of pyrophyllite, which is mainly made by the following steps:

[0033] Select the particle size as 220 mesh to analyze pure iron oxide (Fe 2 o 3 ) powder 5g, dilute the iron oxide powder with 144g absolute ethanol, and fully stir evenly.

[0034] Fe with a soft brush 2 o 3 The powder mixture is evenly applied to the edges of the six sides of the pyrophyllite composite block according to the predetermined width, that is, the junction of two adjacent surfaces of the pyrophyllite composite block. Fe 2 o 3 Width of powder coating=(side length of pyrophyllite synthetic block-side length of tungsten carbide atop hammer face) / 2.

[0035] Dry the treated pyrophyllite composite block at 110° C. for 20 minutes to ensure that all the diluent is volatilized to obtain a pyrophyllite composite block coated with an iron oxide coating.

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Abstract

The invention provides a pyrophyllite synthetic block for solving a decompression and deflation cannon of a synthetic diamond and a preparation method of the pyrophyllite synthetic block and relates to the technical field of diamond synthesis. The preparation method of the pyrophyllite synthetic block for solving the decompression and deflation cannon of the synthetic diamond comprises the following steps: mixing ferric oxide powder and a diluting solution; coating a mixed solution to an edge of each surface of the pyrophyllite synthetic block; drying the treated pyrophyllite synthetic block to attach the ferric oxide powder to the edge of each surface of the pyrophyllite synthetic block according to a pre-set width, so as to form a ferric oxide coating. The method provided by the invention is simple and convenient to operate, strong in controllability and suitable for large-scale production.

Description

technical field [0001] The invention relates to the technical field of diamond synthesis, and in particular to a synthetic diamond pyrophyllite block and a preparation method thereof which solve the problem of synthesizing a diamond pressure relief and deflation gun. Background technique [0002] Pyrophyllite is a kind of clay mineral with the chemical formula Al 2 (Si 4 o 10 )(OH) 2 , in view of its own excellent characteristics, it is often used as the peripheral material of the pressure transmission medium for high temperature and high pressure synthesis of diamond. In the process of high temperature and high pressure synthesis of diamond, the high pressure is generated by six carbide carbide anvils directly acting on the six surfaces of pyrophyllite and continuously extruded until the preset pressure value is reached, and then for The synthesis of diamond provides an ideal growth environment of static high pressure. When the diamond synthesis is over, it is generall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J3/06
CPCB01J3/06
Inventor 李勇廖江河宋谋胜佘彦超王强王应张志高
Owner TONGREN UNIV
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