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Oxygen-nitrogen glass material with high elastic energy dissipation capacity and preparation method thereof

A technology of oxygen nitrogen glass and capacity, applied in the field of light transparent armor materials, can solve the problems of size and light transmittance limitations, high requirements, size and transparency limitations, etc., to meet the requirements of industrial production, strong energy dissipation ability, The effect of simple preparation process

Active Publication Date: 2017-02-01
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sapphire has the characteristics of high stiffness, high hardness, high strength, moderate density and high chemical stability, but its size and transparency are limited and its cost is high; the performance of Al-O-N ceramics is better than that of sapphire, but its size and light transmission The rate is also limited, the cost is high, and the product is difficult to obtain; spinel is a crystalline material made by the same powder sintering, hot pressing, hot isostatic pressing and other processes as Al-O-N ceramics, and its mechanical properties are similar to those of sapphire. Comparable to Al-O-N ceramics, but currently only small samples for research are available
At the same time, transparent ceramics also have problems such as difficulty in special-shaped processing, high requirements for raw materials and equipment, sensitivity to impurities, and difficulty in tailoring performance by adjusting the composition.

Method used

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  • Oxygen-nitrogen glass material with high elastic energy dissipation capacity and preparation method thereof
  • Oxygen-nitrogen glass material with high elastic energy dissipation capacity and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Formulation 1: Si 3 N 4 : 7.23mol%, Y 2 o 3 : 14.46mol%, SiO 2 : 51.80mol%, Al 2 o 3 : 12.05 mol%, ZnO: 14.46 mol%.

[0028] (1) Preparation of the mixture: according to the design composition of the specific oxynitride glass, convert it into a mass percentage, accurately weigh the corresponding raw materials of each composition, weigh and ball-mill the powdery raw materials, mix them, and pass through an 80-mesh sieve;

[0029] (2) At room temperature, first vacuumize the furnace, then pour nitrogen into the resistance furnace, and then evacuate again, repeat this 3 times to remove the air in the furnace, and finally maintain the nitrogen pressure in the furnace at 0.1MPa ;

[0030] (3) Put the batch material into a quartz crucible or a corundum crucible, put it in a graphite crucible, cover with a graphite cover, and heat up to 1630 at a heating rate of 5°C / min in a silicon-molybdenum resistance furnace with good sealing. ℃, keep warm for 2 hours;

[0031] (4...

Embodiment 2

[0033] Recipe 2: Si 3 N 4 : 7.23mol%, Y 2 o 3 : 14.46mol%, SiO 2 : 51.80mol%, Al 2 o 3 : 12.05 mol%, SrO: 14.46 mol%.

[0034] (1) Preparation of the mixture: according to the design composition of the specific oxynitride glass, convert it into a mass percentage, accurately weigh the corresponding raw materials of each composition, weigh and ball-mill the powdery raw materials, mix them, and pass through an 80-mesh sieve;

[0035] (2) At room temperature, first vacuumize the furnace, then pour nitrogen into the resistance furnace, and then evacuate again, repeat this 3 times to remove the air in the furnace, and finally maintain the nitrogen pressure in the furnace at 0.1MPa ;

[0036] (3) Put the batch material into a quartz crucible or a corundum crucible, put it in a graphite crucible, cover with a graphite cover, and heat up to 1600 ℃ at a heating rate of 5°C / min in a silicon-molybdenum resistance furnace with good sealing. ℃, keep warm for 2 hours;

[0037] (4) Aft...

Embodiment 3

[0039] Recipe 3: Si 3 N 4 : 6.59mol%, Y 2 o 3 : 8.79mol%, SiO 2 : 47.25mol%, Al 2 o 3 : 10.99 mol%, SrO: 13.19 mol%, ZnO: 13.19 mol%.

[0040] (1) Preparation of the mixture: according to the design composition of the specific oxynitride glass, convert it into a mass percentage, accurately weigh the corresponding raw materials of each composition, weigh and ball-mill the powdery raw materials, mix them, and pass through an 80-mesh sieve;

[0041] (2) At room temperature, first vacuumize the furnace, then pour nitrogen into the resistance furnace, and then evacuate again, repeat this 3 times to remove the air in the furnace, and finally maintain the nitrogen pressure in the furnace at 0.1MPa ;

[0042] (3) Put the batch material into a quartz crucible or a corundum crucible, put it in a graphite crucible, cover with a graphite cover, and heat up to 1600 ℃ at a heating rate of 8°C / min in a silicon-molybdenum resistance furnace with good sealing. ℃, keep warm for 2.4 hour...

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Abstract

The invention discloses an oxygen-nitrogen glass material with high elastic energy dissipation capability and a preparation method of the oxygen-nitrogen glass material. The oxygen-nitrogen glass material is prepared by fusing and annealing SiO2, Al2O3, Y2O3, Si3N4 and ZnO and / or SrO. The preparation method of the oxygen-nitrogen glass material with the high elastic energy dissipation capability is simple, mild in conditions and low in costs of raw materials; the transmission rate of the prepared oxygen-nitrogen glass with a thickness of 2mm in a visible region (400-800nm) is not smaller than 75%; the relative elastic energy dissipation coefficient Drel can reach 2.65; the melting temperature is relatively low; the oxygen-nitrogen glass material can be used for preparing bulk glass materials and can also be used for fully replacing sapphire and AlON ceramic material in the prior art; the oxygen-nitrogen glass material is applied to the fields of light transparent armour material, ultraviolet detection and infrared light transmitting windows.

Description

technical field [0001] The invention relates to a high elastic energy dissipation oxygen nitrogen glass material and a preparation method thereof, in particular to a 2mm thick transparent oxygen nitrogen glass whose transmittance in the visible light region (400-800nm) is not less than 75% and relative elastic energy consumption Dispersion coefficient D rel The oxynitride glass material above 2.0 and the preparation method thereof belong to the field of light transparent armor materials. Background technique [0002] In the process of anti-riot, anti-theft, anti-terrorism, peacekeeping and war, there are often various potential threats (such as explosions, gun shooting, heavy missile attacks, hard object impact, etc.), which requires people to be able to carry out the threat source. Effective protection and resistance, while being able to respond quickly to dangerous situations (related to visible light transmission) to enhance the survivability of personnel; it is required...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/095
Inventor 卢安贤罗志伟李秀英胡晓林刘飘刘涛涌张骞宋俊
Owner CENT SOUTH UNIV
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