Rear earth doping oxygen-fluorine tellurate microcrystalline glass and preparation method thereof

An oxyfluorotellurate and rare earth doping technology is applied in the field of rare earth doped oxyfluorotellurate glass-ceramics and its preparation, which can solve the problems that the research on oxyfluorotellurate glass-ceramics is rarely reported and so on. , to achieve the effects of increased up-conversion luminous intensity, low production cost and simple preparation method

Inactive Publication Date: 2008-08-13
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Claims
  • Application Information

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Problems solved by technology

Previously, a large number of studies have been conducted on the crystallization properties of tellurate ox...

Method used

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  • Rear earth doping oxygen-fluorine tellurate microcrystalline glass and preparation method thereof
  • Rear earth doping oxygen-fluorine tellurate microcrystalline glass and preparation method thereof
  • Rear earth doping oxygen-fluorine tellurate microcrystalline glass and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 and 2

[0027] Embodiments 1 and 2 are only different in glass formula composition, but the glass melting process is the same. The specific process from glass melting to heat treatment microcrystallization is as follows:

[0028] (1) Melting of rare earth-doped oxyfluorine tellurate glass: According to the glass formula in Table 1, mix the powdery raw materials evenly, put them into a platinum crucible and melt them in a silicon carbon rod electric furnace at a temperature of 850-950°C, After being completely melted and clarified for 15-20 minutes, pour the molten glass on the preheated graphite mold, and then quickly move the glass to the temperature that has been raised to the glass transition temperature (T g ) in a muffle furnace for annealing. The annealing process is as follows: keep warm at 325°C for 3 to 4 hours, then drop to room temperature at a rate of 5°C / hour, and take out the glass sample after complete cooling.

[0029] (2) Preparation method of rare earth-doped oxyfl...

Embodiment

[0030] Examples: 3, 4 and 5:

[0031] Concrete preparation process is as follows:

[0032] The first step: carry out batching according to the glass component of embodiment 3,4 and 5 described in table 1;

[0033] The second step: the process of melting the oxyfluorine tellurate glass-ceramics of Examples 3, 4 and 5 is the same as the glass melting process of Examples 1 and 2.

[0034] The third step: the preparation process of embodiment 3, 4 and 5 oxyfluorine tellurite glass-ceramic is basically the same as that of embodiment 1 and 2, that is, according to the glass thermal analysis (DTA) data, the glass sample prepared is made of Room temperature is heated to T at a rate of 10°C / min g After nucleation at a temperature above 15°C for 10 to 15 hours, heat to the first crystallization peak temperature at a rate of 0.5°C / min (T x ) crystallization for 100-200 min, and finally cooled to room temperature at a rate of 1° C. / min and then taken out to obtain transparent oxyfluori...

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Abstract

The present invention relates to a rare earth doping oxyfluoride tellurite nucleated glass and the preparing method thereof, and the mol percentage of the nucleated glass is as follows: TeO2: 68-73%, ZnO: 15-18%, ZnF2: 7-10%, RF3(R is a rare earth element): 3-5%. The preparing method is firstly preparing oxyfluoride tellurite glass with a melting method, then through an accurate heat processing technique the substrate glass is heat treated for crystallization to obtain a transparent oxyfluoride tellurite nucleated glass. The prepared oxyfluoride tellurite nucleated glass is excellent and has excellent infrared transmitting property and the dimension of the crystal phase in the nucleated glass is tens in nano-scale. The preparing method of the nucleated glass of the invention is simple relatively, comparing with the fluoride glass the stability of the glass is better and the heat treating blooming process can be controlled more easily. The nucleated glass is suitable for applying in the optical window material of the mid-infrared waveband, and is used for high intensity upper converting luminous material.

Description

technical field [0001] The present invention relates to glass-ceramics, in particular to rare-earth-doped oxyfluorine tellurate glass-ceramics and its preparation method, which is characterized in that the glass-ceramics has high transmittance in the mid-infrared band, and the rare-earth ions have strong up-conversion luminescence. Compared with fluoride glass, its glass forming ability is greatly improved. Background technique [0002] In the past few decades, a great deal of research has been done on how to form uniform submicroscale crystalline phases in silicate glasses. Compared with traditional glass, glass-ceramics has excellent thermal and mechanical properties, such as low thermal expansion coefficient and high elastic modulus; especially when the crystallite phase size in glass-ceramics is smaller than a certain wave band, it has a high Through the characteristics, the thermal and mechanical properties of the glass are greatly improved. [0003] Extensive resear...

Claims

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Application Information

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IPC IPC(8): C03C10/02C03B32/02
Inventor 张军杰于春雷段忠超汪国年胡丽丽
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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