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A kind of sulfide infrared glass and its preparation method

A technology of infrared glass and sulfide, which is applied in the field of sulfide infrared glass and its preparation, can solve the problem that the light transmission range of sulfide glass cannot completely cover the atmospheric window of 8-12 μm, and achieve high hardness, low cost and high mechanical strength Effect

Active Publication Date: 2016-12-21
NANJING WAVELENGTH OPTO ELECTRONICS SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the problem that the light transmission range of sulfide glass cannot completely cover the 8-12 μm atmospheric window in the prior art, the present invention provides a sulfide infrared glass with a light transmission range that can cover the 8-12 μm band and its preparation method

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  • A kind of sulfide infrared glass and its preparation method
  • A kind of sulfide infrared glass and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Ga 8 Sb 32 S 60 Sulfide infrared glass preparation

[0024] Mix Ga, Sb and S with a purity ≥ 99.999% in proportion to obtain a glass mixture, put the glass mixture into a clean quartz ampoule with a hydroxyl content of less than 10ppm, and evacuate until the vacuum degree is less than 10 -2 Pa, the quartz ampoule was sealed with an oxyhydrogen flame. Put the sealed quartz ampoule containing the glass mixture into a swing furnace, raise the temperature to 900°C and keep it warm for 24 hours, take it out and quench it in water; Rate cooling to room temperature, that is, Ga 8 Sb 32 S 60 Sulfide infrared glass. figure 1 It is a photo of the glass of this embodiment taken by an infrared camera with a working wavelength of 7.5-13 μm. Through the glass of this embodiment, the network-shaped object placed behind the glass can be clearly seen.

[0025] Bruker Tensor27 Fourier transform infrared spectrometer was used to test the infrared transmission spectrum of 3mm thick...

Embodiment 2

[0028] Ga 4 Sb 36 S 60 Sulfide infrared glass preparation

[0029] Mix Ga, Sb and S with a purity ≥ 99.999% in proportion to obtain a glass mixture, put the glass mixture into a clean quartz ampoule with a hydroxyl content of less than 10ppm, and evacuate until the vacuum degree is less than 10 -2 Pa, the quartz ampoule was sealed with an oxyhydrogen flame. Put the sealed quartz ampoule containing the glass mixture into a swing furnace, raise the temperature to 850°C and keep it warm for 36 hours, take it out and quench it in water; Rate cooling to room temperature, that is, Ga 4 Sb 36 S 60 Sulfide infrared glass.

[0030] Bruker Tensor27 Fourier transform infrared spectrometer was used to test the infrared transmission spectrum of 3mm thick glass sheet; the Archimedes method was used to test the glass density; the TAQ2000 differential scanning calorimeter was used to test the glass transition temperature of the glass, and the heating rate was 10°C / min ;Using INSTRON W...

Embodiment 3

[0033] Ga 10 Sb 28 S 62 Sulfide infrared glass preparation

[0034] Mix Ga, Sb and S with a purity ≥ 99.999% in proportion to obtain a glass mixture, put the glass mixture into a clean quartz ampoule with a hydroxyl content of less than 10ppm, and evacuate until the vacuum degree is less than 10 -2 Pa, the quartz ampoule was sealed with an oxyhydrogen flame. Put the sealed quartz ampoule containing the glass mixture into a swing furnace, raise the temperature to 950°C and keep it warm for 48 hours, take it out and quench it in water; Rate cooling to room temperature, that is, Ga 10 Sb 28 S 62 Sulfide infrared glass.

[0035] Bruker Tensor27 Fourier transform infrared spectrometer was used to test the infrared transmission spectrum of 3mm thick glass sheet; the Archimedes method was used to test the glass density; the TAQ2000 differential scanning calorimeter was used to test the glass transition temperature of the glass, and the heating rate was 10°C / min ;Using INSTRON...

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Abstract

The invention discloses sulfide infrared glass and a preparation method. The chemical formula of the sulfide infrared glass is GaxSbyS1-x-y, wherein x is more than or equal to 0.04 and less than or equal to 0.10, and y is more than or equal to 0.28 and less than or equal to 0.36. The preparation method of the sulfide infrared glass comprises the following steps of (1) preparing a glass mixture from elemental gallium, elemental antimony and elemental sulfur; (2) placing the glass mixture in a sealed vacuum container, preserving heat for 24 to 48 hours at 850 to 950 DEG C, smelting the glass mixture, taking out the glass mixture, and quenching the glass mixture to form glass; (3) preserving the heat of the formed glass for 3 to 5 hours at 220 to 250 DEG C, annealing the glass, and cooling the glass to the room temperature at the speed of 0.1 to 0.5 DEG C / min. The sulfide glass has higher transmittance (over than 55 percent) at the wave band of 8 to 12 microns, is strong in mechanical strength, high in hardness, low in cost and environment-friendly, and can be used in the technical field of infrared thermal imaging.

Description

technical field [0001] The invention relates to an infrared optical glass material, in particular to a sulfide infrared glass and a preparation method thereof. Background technique [0002] With the rapid growth of demand for thermal imaging equipment in fields such as night vision, industrial control, and medical testing, infrared optical materials required for thermal imaging systems have attracted much attention. Thermal imaging equipment used outdoors is mainly designed based on the 8-12 μm atmospheric window, because the infrared light in the 8-12 μm band has very little loss when transmitted in the atmosphere, and the peak infrared intensity radiated by objects at outdoor temperatures is within this band. At present, the optical materials used in infrared thermal imaging systems on the market mainly include germanium single crystal, zinc selenide crystal and chalcogenide glass, among which chalcogenide glass has excellent infrared transmission performance, low refracti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/32C03C4/10
Inventor 杨安平张鸣杰杨志勇张斌任和郭威杨艳唐定远
Owner NANJING WAVELENGTH OPTO ELECTRONICS SCI & TECH CO LTD