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A pyrope single crystal and preparation method thereof

A pyrope and single crystal technology, applied in the direction of single crystal growth, single crystal growth, crystal growth, etc., can solve problems such as gaps, achieve flat crystal surface, high temperature stability and strong acid corrosion resistance, and improve quality Effect

Active Publication Date: 2021-05-25
罗首其
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the artificial synthesis technology of pyrope single crystal is still blank, and there is no report

Method used

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  • A pyrope single crystal and preparation method thereof
  • A pyrope single crystal and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Weigh the following raw materials:

[0028] Light MgO 3.0g,

[0029] γ-Al 2 o 3 2.5g,

[0030] SiO 2 4.5g;

[0031] The light MgO, γ-Al 2 o 3 and SiO 2 The purity is 99.9%, and the particle size is nano-scale powder material of 20-40nm. Among them, SiO 2 The supplier is Shanghai Chaowei Nano Technology Co., Ltd., light MgO and γ-Al 2 o 3 The supplier is Shanghai Xiangtian Nano Technology Co., Ltd.

[0032] (2) Light MgO, γ-Al prepared by step (1) 2 o 3 and SiO 2 Place them in beakers respectively, and stir and disperse with 20 times the mass of water to obtain MgO dispersion, Al 2 o 3 Dispersion and SiO 2 Dispersions;

[0033] (3) Al 2 o 3 The dispersion is poured into SiO 2 In the dispersion liquid, and continuously stir with a glass rod for no less than 5 minutes until uniform, then add the MgO dispersion, and continuously stir with a glass rod for no less than 5 minutes until uniform, to obtain a mixed solution;

[0034] (4) Place the mixe...

Embodiment 2

[0041] (1) Weigh the following raw materials:

[0042] Light MgO 2.4g,

[0043] γ-Al 2 o 3 1.6g,

[0044] SiO 2 3.2g;

[0045] The light MgO, γ-Al 2 o 3 and SiO 2The purity is above 99.9%, and the nano-scale powder material with a particle size of 20-40nm. Among them, SiO 2 The supplier is Shanghai Chaowei Nano Technology Co., Ltd., light MgO and γ-Al 2 o 3 The supplier is Shanghai Xiangtian Nano Technology Co., Ltd.

[0046] (2) Light MgO, γ-Al prepared in step (1) 2 o 3 and SiO 2 Place them in beakers respectively, and stir and disperse with 15 times the mass of water to obtain MgO dispersion, Al 2 o 3 Dispersion and SiO 2 Dispersions;

[0047] (3) Al 2 o 3 The dispersion is poured into SiO 2 In the dispersion liquid, and continuously stir with a glass rod for no less than 5 minutes until uniform, then add the MgO dispersion, and continuously stir with a glass rod for no less than 5 minutes until uniform, to obtain a mixed solution;

[0048] (4) Place...

Embodiment 3

[0055] (1) Weigh the following raw materials:

[0056] Light MgO 2.1g,

[0057] γ-Al 2 o 3 1.8g,

[0058] SiO 2 3.0g;

[0059] The light MgO, γ-Al 2 o 3 and SiO 2 The purity is 99.5%, and the particle size is nano-scale powder material of 20-40nm.

[0060] (2) Light MgO, γ-Al prepared in step (1) 2 o 3 and SiO 2 Place them in beakers respectively, and stir and disperse with 20 times the mass of water to obtain MgO dispersion, Al 2 o 3 Dispersion and SiO 2 Dispersions;

[0061] (3) Al 2 o 3 The dispersion is poured into SiO 2 In the dispersion liquid, and stir evenly, then add the MgO dispersion liquid, stir evenly, obtain the mixed liquid;

[0062] (4) Place the mixed solution of step (3) in a stirrer, and stir for 10 minutes at a rotating speed of 5000 rpm;

[0063] (5) Heating and evaporating the mixed liquid in step (4) to remove water, and after the evaporation is completed, continue heating to 200° C. and bake for 20 minutes, and obtain the synthetic ...

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Abstract

The invention discloses a pyrope single crystal and a preparation method thereof, comprising high-purity, nano-scale light MgO, γ-Al 2 o 3 and SiO 2 After sol dispersion and orderly mixing, mechanical stirring, and dehydration treatment, high-temperature and high-pressure synthesis is carried out by HPHT process, and the obtained sample is treated with red acid to remove impurities, and high-quality magnesium with uniform particle size can be obtained in a colorless and transparent shape. Aluminum garnet single crystal. The crystal has a crystallinity of more than 95%, good anisotropy, clear crystal edges and smooth crystal planes. The pyrope single crystal obtained in the present invention has high temperature stability and strong acid corrosion resistance, and is expected to be used in laser window components like yttrium aluminum garnet, as well as in the field of special semiconductor materials for high temperature work, and increase its use in jewelry. on commercial value. The present invention proposes the artificial synthesis method of pyrope for the first time, and fills in the technological blank of synthesizing pyrope single crystal by HPHT process.

Description

technical field [0001] The invention belongs to the technical field of new material processing, and relates to a pyrope single crystal and a preparation method thereof. Background technique [0002] Garnet is an ultrabasic rock ore formed in the mantle, and it is one of the symbolic non-rare minerals of ultrabasic rock. Natural garnet is difficult to form in a complex and changeable geological environment. Single-crystal minerals mostly exist in the form of silicate island crystals, so they have no particularly important functions and high value, so people have not studied, manufactured and utilized them like diamonds. [0003] Pyrenet is a type of garnet that is often overlooked in its research and manufacture. At present, the artificial synthesis technology of pyrope single crystal is still blank and has not been reported. Contents of the invention [0004] The applicant accidentally synthesized a special single crystal in an experiment, which was determined to be pyro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/28C30B1/12
CPCC30B1/12C30B29/28
Inventor 罗首其
Owner 罗首其