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Transparent oxyfluoride tellurite glass

A technology of tellurate glass and oxyfluoride, which is applied in the field of optical glass materials, can solve the problems of easy crystallization and phase separation of glass, poor thermal stability, and low transition temperature, and achieve high transition temperature and low maximum sound The effect of sub-energy and low melting temperature

Inactive Publication Date: 2012-06-27
SHENYANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The glass transition temperature of the reported tellurite glass is low, the thermal stability is not good, and it contains Pb and Cd elements that are harmful to the human body and the environment.
Poor thermal stability means that the glass is prone to crystallization and phase separation, which in turn leads to high brittleness and easy fracture of the material

Method used

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  • Transparent oxyfluoride tellurite glass
  • Transparent oxyfluoride tellurite glass
  • Transparent oxyfluoride tellurite glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of transparent oxyfluoride tellurate glass, select the raw material formula of transparent oxyfluoride tellurate glass according to the first group in Table 1, that is, 70TeO 2 -7Al 2 o 3 -13CaF 2 -10LaF 3 (mol%). Its preparation method is:

[0022] 1. According to the composition of the above-mentioned new transparent oxyfluoride tellurate glass, select the raw material formula of transparent oxyfluoride tellurate glass, among which TeO 2 and LaF 3 For high-purity raw materials, CaF 2 and Al 2 o 3 For the analysis of pure raw materials, each raw material was weighed according to the stoichiometric ratio.

[0023] 2. After uniformly mixing the raw materials in step 1 in a planetary ball mill for 30 minutes, pour them into a platinum crucible and cover it.

[0024] 3. Put the covered platinum crucible in step 2 into a silicon carbon rod resistance furnace for melting, the melting temperature is 850°C, keep it warm for 30 minutes, then raise it to 50°C, a...

Embodiment 2

[0029] A kind of transparent oxyfluoride tellurate glass, according to the second group in Table 1, select the raw material formula of transparent oxyfluoride tellurate glass, that is, 70TeO 2 -12Al 2 o 3 -8CaF 2 -10LaF 3 (mol%). Its preparation method is:

[0030] 1. According to the composition of the above-mentioned new transparent oxyfluoride tellurate glass, select the raw material formula of transparent oxyfluoride tellurate glass, among which TeO 2 and LaF 3 For high-purity raw materials, CaF 2 and Al 2 o 3 For the analysis of pure raw materials, each raw material was weighed according to the stoichiometric ratio.

[0031] 2. After uniformly mixing the raw materials in step 1 in a planetary ball mill for 30 minutes, pour them into a platinum crucible and cover it.

[0032] 3. Put the covered platinum crucible in step 2 into a silicon carbon rod resistance furnace for melting, the melting temperature is 900°C, keep it warm for 30 minutes, then raise it to 50°C,...

Embodiment 3

[0036] A transparent oxyfluoride tellurate glass, according to the third group in Table 1, select the transparent oxyfluoride tellurate glass raw material formula, namely 70TeO 2 -7Al 2 o 3 -18CaF 2 -5LaF 3 (mol%). Its preparation method is:

[0037] 1. According to the composition of the above-mentioned new transparent oxyfluoride tellurate glass, select the raw material formula of transparent oxyfluoride tellurate glass, among which TeO 2 and LaF 3 For high-purity raw materials, CaF 2 and Al 2 o 3 For the analysis of pure raw materials, each raw material was weighed according to the stoichiometric ratio.

[0038] 2. After uniformly mixing the raw materials in step 1 in a planetary ball mill for 30 minutes, pour them into a platinum crucible and cover it.

[0039]3. Put the covered platinum crucible in step 2 into a silicon carbon rod resistance furnace for melting, the melting temperature is 850°C, keep it warm for 30 minutes, then raise it to 50°C, and keep it war...

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Abstract

The invention relates to a transparent oxyfluoride tellurite glass, which comprises the following components by mole ratio: 55-75mol% of TeO2, 5-25mol% of Al2O3, 0-18mol% of CaF2, 0-15mol% of LaF3. The oxyfluoride tellurite glass uses a traditional glass melting process for melting and molding. The oxyfluoride tellurite glass possesses excellent thermal stability, and is an ideal rare earth doped up-conversion luminescence matrix material which is capable of enhancing the permeability of the matrix, improving the treatment load of a land infiltration system and improving the denitrification efficiency, the oxyfluoride tellurite glass does not contain toxic heavy metals Pb and Cd elements which are harmful to human body and environment.

Description

technical field [0001] The invention relates to the field of optical glass materials, in particular to a novel transparent oxyfluoride tellurate glass capable of realizing upconversion luminescence and a preparation method thereof. Background technique [0002] Due to the special electronic layer structure of rare earth elements, when its 4f electrons transition between different energy levels, they can absorb or emit spectra of various wavelengths from ultraviolet, visible to infrared light regions, so long-wavelength laser diode pumping Under this, rare earth ion-doped optical glass materials can produce short-wavelength up-conversion luminescence. Up-conversion luminescence has broad application prospects in the fields of short-wavelength lasers, optical communications, three-dimensional display technology, solar cells, and medical diagnosis. For example, dye-sensitized solar cells absorb sunlight between 290 and 700nm and convert it into electrical energy, but make litt...

Claims

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Application Information

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IPC IPC(8): C03C3/23
Inventor 候朝霞薛召露王少洪
Owner SHENYANG UNIV
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