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Pyrope single crystal and preparation method thereof

A pyrope and single crystal technology, applied in the direction of single crystal growth, crystal growth, single crystal growth, etc., can solve problems such as gaps, achieve the effect of flat crystal surface, increase commercial value, and expand production range

Active Publication Date: 2020-03-24
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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  • Pyrope single crystal and preparation method thereof
  • 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 by 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 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;

[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. The pyrope single crystal is prepared from high-purity nanoscale light MgO, gamma-Al2O3 and SiO2. According to the method, sol dispersion and ordered mixing, mechanical stirring, dehydration treatment and HPHT-process high-temperature high-pressure synthesis are successively carried out to obtain a sample, and the sample is subjected to impurity removal treatment with Lefort aqua regia, so the colorless transparent high-quality pyrope single crystal with uniform granularity can be obtained. The crystallinity of the crystal is more than 95%, the anisotropy is good, the crystal edges are clear, and the crystal face is flat. The pyrope single crystal obtained by the invention has high-temperature stability and strong acid corrosion resistance, is expected to be used in the fields of laser window elements and special semiconductor materials for high-temperature work like yttrium aluminum garnet, and is increased in commercial value during application to jewelry accessories. The artificial synthesis method of pyrope is provided for the first time, and the technical blank of synthesizing the pyrope single crystal by using an HPHT process is filled up.

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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IPC IPC(8): C30B29/28C30B1/12
CPCC30B1/12C30B29/28
Inventor 罗首其
Owner 罗首其