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A kind of europium-doped tungstate transparent glass-ceramic and its preparation method

A technology of transparent glass and glass ceramics, applied in the field of europium-doped tungstate transparent glass ceramics and its preparation

Active Publication Date: 2017-08-11
CHANGCHUN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is no relevant report on europium-doped tungstate-based transparent glass ceramics

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  • A kind of europium-doped tungstate transparent glass-ceramic and its preparation method
  • A kind of europium-doped tungstate transparent glass-ceramic and its preparation method
  • A kind of europium-doped tungstate transparent glass-ceramic and its preparation method

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Experimental program
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Embodiment 1

[0026] According to mass percentage 26CaCO 3 -10WO 3 -40SiO 2 -10H 3 BO 3 -8.5NaF-0.5Sb 2 o 3 -5Eu 2 o 3 , weigh each component, and mix the above components well, place them in a corundum crucible, put them into a silicon-molybdenum furnace, raise the temperature to 1500°C, and melt the raw materials into a liquid state. After constant temperature for 1 hour, the liquid in the crucible Pour it on a preheated stainless steel mold to solidify and form it, quickly put it into a muffle furnace at 500°C, keep it warm for 1 hour, and then cool down to room temperature with the furnace to prepare europium-doped transparent tungstate glass; the transparent tungstate glass sample Put it into a box-type resistance furnace, raise the temperature to 580°C at a heating rate of 5°C / min, keep it for 2 hours, then raise it to 740°C at a heating rate of 4°C / min, and keep it for 2 hours to obtain europium-doped transparent tungstic acid Salt glass ceramics; cut the prepared europium-do...

Embodiment 2

[0028] According to mass percentage 30CaCO 3 -10WO 3 -35SiO 2 -15H 3 BO 3 -5NaF-1.5Sb 2 o 3 -3.5Eu 2 o 3 , weigh each component, and mix the above components well, place them in a corundum crucible, put them into a silicon-molybdenum furnace, raise the temperature to 1400 ° C, and melt the raw materials into a liquid state. After 2 hours of constant temperature, the liquid in the crucible Pour it on a preheated stainless steel mold to solidify and form it, quickly put it into a muffle furnace at 500°C, keep it warm for 1 hour, and then cool down to room temperature with the furnace to prepare europium-doped transparent tungstate glass; the transparent tungstate glass sample Put it into a box-type resistance furnace, raise the temperature to 580°C at a heating rate of 4°C / min, keep it for 2 hours, then raise it to 760°C at a heating rate of 4°C / min, and keep it for 1 hour to obtain europium-doped transparent tungstic acid Salt glass ceramics; cut the prepared europium-d...

Embodiment 3

[0030] According to mass percentage 25CaCO 3 -15WO 3 -40SiO 2 -10H 3 BO 3 -5NaF-1Sb 2 o 3 -4Eu 2 o3 , weigh each component, and mix the above components well, place them in a corundum crucible, put them into a silicon-molybdenum furnace, raise the temperature to 1300°C, and melt the raw materials into a liquid state. After 3 hours of constant temperature, the liquid in the crucible Pour it on a preheated stainless steel mold to solidify and form it, quickly put it into a muffle furnace at 500°C, keep it warm for 1 hour, and then cool down to room temperature with the furnace to prepare europium-doped transparent tungstate glass; the transparent tungstate glass sample Put it into a box-type resistance furnace, raise the temperature to 620°C at a heating rate of 3°C / min, keep it for 1 hour, then raise the temperature to 740°C at a heating rate of 4°C / min, and keep it for 2 hours to obtain europium-doped transparent tungstic acid Salt glass ceramics; cut the prepared europ...

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Abstract

The present invention relates to a europium-doped tungstate transparent glass ceramic and a preparation method thereof, wherein the europium-doped tungstate transparent glass ceramic comprises, by mass, 25-35% of CaCO3, 5-15% of WO3, 35-45% of SiO2, 10-15% of H3BO3, 5-15% of NaF, 0.5-1.5% of Sb2O3, and1-5% of Eu2O3, and the preparation method uses a melt crystallization technology. According to the present invention, the main crystal phase of the europium-doped tungstate transparent glass ceramic is calcium tungstate, the transmittance of the europium-doped tungstate transparent glass ceramic having the thickness of 1 mm in the visible light region is 85-86%, two emission peaks exist at 592 nm and 614 nm under the excitation at the wavelength of 394 nm and are respectively corresponding to the <5>D0(arrow)<7>F1 transition and the <5>D0(arrow)<7>F2 transition of the Eu<3+>, and the europium ions enter the crystal phase, such that the fluorescence intensity of the product of the present invention is higher than the fluorescence intensity of the glass having the same chemical composition.

Description

technical field [0001] The invention relates to the technical field of glass ceramics preparation, in particular to europium-doped tungstate transparent glass ceramics with calcium tungstate as crystal phase and a preparation method thereof. Background technique [0002] Transparent glass-ceramic is a kind of material combining microcrystalline phase and glass. Under the action of a suitable nucleating agent, the nucleation and growth of microcrystalline can be controlled. In the glass-ceramic system, the doping concentration of rare earth ions can be It can be very high, and the size of the material can be large, and the thermal shock resistance is better. Compared with single crystal, the preparation process is simple and the price is cheap, so glass ceramics are more suitable for laser working materials. [0003] Tungstate materials have excellent optical and electromagnetic properties and chemical stability, and are widely used in the fields of display, lighting, optical...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/02C03B32/02
Inventor 张洪波苏春辉韦钦磊
Owner CHANGCHUN UNIV OF SCI & TECH