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Europium-doped tungstate transparent glass ceramic and preparation method thereof

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: 2016-01-20
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

Method used

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  • Europium-doped tungstate transparent glass ceramic and preparation method thereof
  • Europium-doped tungstate transparent glass ceramic and preparation method thereof
  • Europium-doped tungstate transparent glass ceramic and preparation method thereof

Examples

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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 thoroughly, put it in a corundum crucible, put it in a silicon molybdenum furnace, heat up to 1500 ℃, make the raw material melt into a liquid state, after 1 hour of constant temperature, the liquid in the crucible Pour it on a preheated stainless steel mold to solidify and shape it, quickly put it in a 500℃ muffle furnace, keep it warm for 1 hour, and then cool down to room temperature with the furnace, to prepare a europium-doped transparent tungstate glass; sample the transparent tungstate glass Put it in a box-type resistance furnace, heat up to 580°C at a heating rate of 5°C / min, keep it for 2 hours, then heat it up to 740°C at a heating rate of 4°C / min, keep it for 2 hours, and obtain europium-doped hyalotungstic acid Salt glass ceramics; cut the prepared europium-doped transparent tungstate glass ceramics with a cutt...

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 evenly, put it in a corundum crucible, put it in a silicon-molybdenum furnace, heat up to 1400 ℃, make the raw material melt 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 shape it, quickly put it in a 500℃ muffle furnace, keep it warm for 1 hour, and then cool down to room temperature with the furnace, to prepare a europium-doped transparent tungstate glass; sample the transparent tungstate glass Put it into a box-type resistance furnace, heat it up to 580°C at a heating rate of 4°C / min, keep it for 2 hours, then heat it up to 760°C at a heating rate of 4°C / min, keep it for 1 hour, and obtain europium-doped hyaluronic acid Salt glass ceramics; cut the prepared europium-doped transparent tungstate glass ceramics with a cutting...

Embodiment 3

[0030] According to mass percentage 25CaCO 3 -15WO 3 -40SiO 2 -10H 3 BO 3 -5NaF-1Sb 2 O 3 -4Eu 2 O 3 , Weigh each component, and mix the above components thoroughly, put them in a corundum crucible, put them in a silicon molybdenum furnace, heat up to 1300 ℃, make the raw materials melt 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 shape it, quickly put it in a 500℃ muffle furnace, keep it warm for 1 hour, and then cool down to room temperature with the furnace, to prepare a europium-doped transparent tungstate glass; sample the transparent tungstate glass Put it in a box-type resistance furnace, heat up to 620°C at a heating rate of 3°C / min, keep it for 1 hour, then heat it up to 740°C at a heating rate of 4°C / min, keep it for 2 hours, and obtain europium-doped hyalotungstic acid Salt glass ceramics; cut the prepared europium-doped transparent tungstate glass ceramics with a cut...

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