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Infrared-transmission fluorozirconate glass containing gallium oxide and preparation method of glass

A fluorozirconate, infrared-transmitting technology, used in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve the problems of low phonon energy and large atomic mass, and achieve the effect of high thermal stability

Inactive Publication Date: 2019-08-23
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In gallate glass, gallium oxide is considered to have a structure similar to that of aluminum oxide, and plays a role in connecting the glass network through a four-coordinated manner. In addition, gallium oxide has a large atomic mass and low phonon energy. Adding Ga 2 o 3 Improved thermal stability to oxide glasses has been demonstrated in large-scale BGG glasses, however, new infrared glasses with small amounts of gallium oxide added to fluoride glasses have not been reported

Method used

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  • Infrared-transmission fluorozirconate glass containing gallium oxide and preparation method of glass
  • Infrared-transmission fluorozirconate glass containing gallium oxide and preparation method of glass
  • Infrared-transmission fluorozirconate glass containing gallium oxide and preparation method of glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0028] Calculate the weight percent of the glass according to x=0.5 mole percent (mol%) of the glass composition, and the preparation process is basically the same as in Example 1. The prepared glass is colorless and transparent, and its thermal stability parameters are shown in the figure.

Embodiment 3

[0030] Calculate the weight percentage of glass according to x=1.0 glass composition mole percentage (mol%), then weigh each raw material, add auxiliary reagent NH in the proportion of 25% of the total mass of raw materials 4 HF 2 , mix evenly; then put the uniform powder mixture into a platinum crucible, cover it with a platinum lid, put it into a silicon carbide rod electric furnace at 860°C, melt it for 1 hour, and clarify it for 45 minutes; cool down to 700-800°C, and pour the glass liquid In a preheated stainless steel mold; then quickly move the glass into a muffle furnace that has been heated to the transition temperature (Tg), keep it warm for 4 hours, and then anneal it to room temperature at a speed of 10°C / min. The obtained glass is colorless and transparent , the prepared glass is colorless and transparent, and the thermal stability parameters and infrared transmission spectrum are shown in the figure.

Embodiment 4

[0032] Calculate the weight percent of the glass according to x=1.5 glass composition mole percent (mol%), and the preparation process is basically the same as that of Example 3. The prepared glass is colorless and transparent, and its thermal stability parameters are shown in the figure.

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Abstract

The invention relates to infrared-transmission fluorozirconate glass containing Ga2O3. The gallium oxide is introduced into composition of ZrF4-BaF2-LaF3-AlF3--NaF(ZBLAN) fluoride glass, and the fluorozirconate fluoride glass is modified by the gallium oxide, and the fluorozirconate glass containing the gallium oxide comprises the following raw materials, in percentages by molar: (100-x)(ZrF4-AlF3-BaF2-NaF-LaF3)-xGa2O3. The fluorozirconate glass containing the gallium oxide is prepared by adopting a melt cooling method, and the prepared glass is transparent, has no crystallization, and has very good transmittance equivalent to that of fluorozirconate glass in the middle infrared wave band from 3[mu]m to 5 [mu]m; and the fluorozirconate glass containing the Ga2O3 has better thermal stability (delta T) than ZBLAN glass and very good middle-infrared transmission performance, and is particularly suitable for use as a window material in the middle-infrared wave band.

Description

technical field [0001] The invention relates to a Ga-containing compound with excellent thermal stability 2 o 3 The infrared-transmitting fluorozirconate glass and the preparation method thereof are especially suitable for mid-infrared window materials passing through the 3-5um band. Background technique [0002] With the strategic needs of national defense security, a new generation of optoelectronic weapons has gradually changed from active radar electromagnetic wave detection to passive infrared search and tracking systems. Active radar emits electromagnetic waves that can easily leak the whereabouts of the carrier and hinder the accompanying tasks, and endanger their own safety. , while the passive infrared system effectively avoids this shortcoming by absorbing the infrared radiation emitted by objects, and can track at a long distance, and realize accurate tracking of multiple targets at the same time. In the harsh environment that changes, the infrared transparent m...

Claims

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Application Information

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IPC IPC(8): C03C3/23C03C3/32C03B19/02C03B25/00
CPCC03B19/02C03B25/00C03C3/23C03C3/325
Inventor 李家成崔素杰张龙姜益光王在洋张龙飞
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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