A kind of process of making magnesium oxide composite sheet

A production process, magnesium oxide technology, applied in the application of ultra-high pressure process, the method of using atmospheric pressure to chemically change substances, chemical instruments and methods, etc., can solve the problem of harm to the human body, affecting the performance of pressure transmission and heat preservation, Environmental pollution and other issues, to achieve the effect of reducing heat dissipation, improving quality and synthesis stability, and improving the working environment

Active Publication Date: 2021-07-13
ZHENGZHOU ZHONGNAN JETE SUPERABRASIVES
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method needs to add water glass (Na 2 SiO 3 9H 2 O) for mixing materials, water glass is a pungent toxic substance, which is very harmful to the human body in the operation process and has certain pollution to the environment; and it will bring Na in the high temperature and high pressure synthesis process 2 SiO 3 Impurities, while magnesium oxide flakes contain Na 2 SiO 3 It will affect its performance of pressure transmission and heat preservation

Method used

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  • A kind of process of making magnesium oxide composite sheet
  • A kind of process of making magnesium oxide composite sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The manufacturing process of the present embodiment magnesium oxide composite sheet is:

[0029] (1) Dry magnesia powder and zirconia powder at 300°C for 30 minutes;

[0030] (2) Take 80g of magnesia powder and 20g of zirconia powder dried in step (1), mix the magnesia powder and zirconia powder evenly, add 10g of distilled water, stir evenly, and make a mixed slurry;

[0031] (3) Pressing the mixed slurry produced in step (2) into a tablet to make a magnesium oxide prefabricated tablet;

[0032] (4) Put the magnesium oxide prefabricated sheet in an oven, set the temperature at 200°C for 60 minutes, at 800°C for 30 minutes, and at 1300°C for 120 minutes to prepare the magnesium oxide sheet.

[0033] In this embodiment, the pressed abrasive tool used in step (3) is as figure 1 and 2 As shown, the pressed abrasive tool includes an upper indenter 1, a body 2, and a lower indenter 3, and at least two exhaust slots 4 are provided on the bottom side of the upper indenter 1...

Embodiment 2

[0035] The manufacturing process of the magnesium oxide composite sheet of this embodiment is the same as that of Example 1, and the difference is that

[0036] Magnesia powder is 80g, zirconia powder is 10g, distilled water is 5g;

[0037] The holding time is: 30 minutes at 200°C, 40 minutes at 800°C, and 100 minutes at 1300°C.

Embodiment 3

[0039] The manufacturing process of the magnesium oxide composite sheet of this embodiment is the same as that of Example 1, and the difference is that

[0040] Magnesia powder is 85g, zirconia powder is 15g, distilled water is 10g,

[0041] The holding time is: 50 minutes at 200°C, 50 minutes at 800°C, and 150 minutes at 1300°C.

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Abstract

The invention provides a process for making magnesia composite sheets. Using the properties and functions of magnesia powder, by adding a certain amount of zirconia powder and pressing with a special abrasive tool, the magnesia composite sheet is specially baked. The process produces magnesium oxide composite sheets for diamond or cubic boron nitride synthesis, which improves its performance, ensures the stability of quality, and improves the synthesis stability of diamond and cubic boron nitride.

Description

technical field [0001] The invention belongs to the preparation process of magnesium oxide composite sheet for superhard material synthesis, especially the synthesis of plate-shaped diamond single crystal and the synthesis and application of gem-grade diamond large single crystal, and can also be applied to the synthesis of cubic boron nitride. Background technique [0002] In the synthesis process of superhard materials (diamond and cubic boron nitride), it is necessary to use a magnesium oxide sheet as a shielding material to isolate the pollution problem between the synthetic rod and external materials, and at the same time play a certain role of pressure transmission and heat preservation , Therefore, the quality and performance of magnesium oxide sheets directly affect the synthesis effect of diamond or cubic boron nitride. Traditional magnesia flakes are made by mixing yellow magnesia powder with 5%~15% water glass and then pressing them evenly, then putting the presse...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/04C04B35/622B01J3/00
CPCB01J3/06C04B35/04C04B35/622C04B2235/6567C04B2235/661
Inventor 张相法王义煌赵海军李满刚
Owner ZHENGZHOU ZHONGNAN JETE SUPERABRASIVES
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