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Purification method for preparing high-purity infrared chalcogenide glass, and apparatus thereof

A technology of chalcogenide glass and purification method is applied in the purification field of preparing high-purity infrared chalcogenide glass, which can solve the problems of inevitable introduction of impurities, limited quality improvement of chalcogenide glass, complicated process, etc., and achieve excellent infrared optical transmission performance. , The effect of reducing the volatilization of raw materials and simple operation process

Active Publication Date: 2013-09-25
CHINA BUILDING MATERIALS ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the crucible connection in this technology makes the process complicated, and impurities will inevitably be introduced during the connection process, resulting in limited improvement in the quality of chalcogenide glass. The patent operation time is longer than 23h

Method used

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  • Purification method for preparing high-purity infrared chalcogenide glass, and apparatus thereof
  • Purification method for preparing high-purity infrared chalcogenide glass, and apparatus thereof
  • Purification method for preparing high-purity infrared chalcogenide glass, and apparatus thereof

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Embodiment 1

[0036] figure 1 It is a structural schematic diagram of the purification device of the present invention; as figure 1 As shown, the purification device of the present invention comprises a purification furnace 6, a quartz ampoule bottle 2, a cooling device 3, a connector 4 and a vacuum pump 5, wherein:

[0037] Quartz ampoule 2, used to accommodate the mixture 1 composed of chalcogenide glass raw material and oxygen scavenger;

[0038] The purification furnace 6 is used to heat the mixture 1 in the quartz ampoule;

[0039] The cooling device 3 is located at the part where the upper end of the quartz ampoule bottle 2 protrudes from the purification furnace 6 to solidify the volatile substances;

[0040] Connector 4, connects quartz ampoule bottle 2 and vacuum pump 5;

[0041] The vacuum pump 5 vacuumizes the quartz ampoule bottle 2 to provide the required vacuum environment for the mixture 1;

[0042] Wherein, the part where the upper end of the quartz ampoule 2 protrudes f...

Embodiment 2

[0045] Purification method of the present invention is specifically as follows: preparation chemical formula is Ge 28 Se 60 Sb 12 Glass raw materials, that is, weigh 50g of raw materials according to the precise proportion of germanium, selenium and antimony in the proportion of 28mol%, 60mol% and 12mol%, respectively, and weigh aluminum and gallium in the mass ratio of 200ppm as oxygen scavenger. In an environment full of an inert atmosphere, the above-mentioned weighed elemental raw materials Ge, Sb, Se and oxygen scavenger are fully mixed and then placed in the quartz ampoule 2, and the quartz ampoule 2 and the vacuum pump 5 are connected together with a connector 4, Vacuum down to 4×10 -4About Pa, put the quartz ampoule 2 into the purification furnace 6 at 300°C, wherein the upper part of the quartz ampoule 2 outside the purification furnace 6 uses a cooling device 3 to solidify the volatile material here, and after purification and heating for 5h, The evacuated quartz ...

Embodiment 3

[0048] Another embodiment of the purification method of the present invention is specifically as follows: the preparation chemical formula is Ge 20 Se 65 Sb 15 Glass raw materials, that is, weigh 50g of raw materials according to the precise ratio of 20mol%, 65mol% and 15mol% of germanium, selenium, and antimony, respectively, and weigh aluminum and magnesium as oxygen scavengers at a mass ratio of 200ppm. Mix the above-mentioned elemental raw materials Ge, Sb, Se and oxygen scavenger fully in the environment of the atmosphere and place them in the quartz ampoule bottle, connect the quartz ampoule bottle 2 and the vacuum pump 5 with the connector 4, and evacuate to 5 ×10 -4 About Pa, put the quartz ampoule bottle 2 into the purification furnace 6 at 280°C, wherein the upper part of the quartz ampoule bottle 2 outside the purification furnace uses a cooling device 3 to solidify the volatile material here, and after purification and heating for 5h, put the The evacuated quart...

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Abstract

The invention discloses a purification method for preparing high-purity infrared chalcogenide glass, and an apparatus thereof. The purification method comprises the following steps: 1, fully mixing a chalcogenide glass raw material and a deoxidant to obtain a mixture, placing the mixture in a quartz ampoule, and pre-evacuating the quartz ampoule until the vacuum degree is less than or equal to 5*10<-4>Pa; 2, placing the evacuated quartz ampoule in a purifying furnace, carrying out raw material entirety purification at 200-400DEG C for 1-6h, and cooling the portions of the quartz ampoule outside the purifying furnace for solidifying volatile components; and 3, cooling the quartz ampoule to room temperature after the purification is completed, carrying out 900-950DEG C high-temperature melting of the quartz ampoule melt-sealed by the oxyhydrogen flame in a rocking furnace, carrying out heat insulation for 6-20h, cooling to 500-650DEG C, and quenching to obtain a chalcogenide glass blank. The method can effectively eliminate impurity peaks in a 1-13mum infrared area range of the chalcogenide glass.

Description

technical field [0001] The invention relates to the technical field of long-wave infrared glass purification, in particular to a purification method and device for preparing high-purity infrared chalcogenide glass for removing impurities and improving purity. Background technique [0002] Infrared optical glass is a special glass material with infrared transmission properties. Compared with single crystal, polycrystalline and other crystalline infrared materials, it has the characteristics of good optical uniformity and easy preparation, especially for large-scale and special-shaped infrared devices. Forming and processing have become one of the focuses of research and application of infrared materials. [0003] Chalcogenide glass refers to the glass formed by the elements of group VIA of the periodic table of elements S, Se, and Te as the main elements and a certain amount of other elements introduced. Compared with oxide glass, chalcogenide glass has the advantages of wid...

Claims

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Application Information

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IPC IPC(8): C03B1/00
Inventor 赵华
Owner CHINA BUILDING MATERIALS ACAD
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