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Colorless aluminate-niobate glass and preparation method and application thereof

A technology of aluminum niobate and glass, which is applied in the field of aluminum niobate glass and its preparation, can solve problems such as uniformity, achieve the effects of improving forming ability, high refractive index, and solving the problem of high melting point oxide refractory

Active Publication Date: 2019-05-10
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] And because high-refractive index glass generally contains a large amount of high-melting point oxide components, it is difficult to melt and form a uniform melt by conventional heating methods. How to melt high-melting point oxides has also become an important factor restricting the preparation of optical glass.

Method used

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  • Colorless aluminate-niobate glass and preparation method and application thereof
  • Colorless aluminate-niobate glass and preparation method and application thereof
  • Colorless aluminate-niobate glass and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-9

[0055] A colorless aluminum niobate glass and a preparation method thereof, specifically comprising the following steps:

[0056] (1) Prepare the raw materials in the molar ratio of Table 1, and mix the raw materials in a mortar;

[0057] (2) The powder after mixing is pressed into sheet material under the pressure of 10MPa;

[0058] (3) The flake material is calcined at 1100°C for 6 hours, and divided into block raw materials with a mass of about 60mg / block;

[0059] (4) Place the block in the nozzle of the pneumatic suspension furnace, and pass high-purity O 2 To stabilize the block suspended in the air, use three beams of CO 2 Laser heating to 2400°C to heat the block to a molten state, and then cooling at a cooling rate of 250°C / min to obtain glass pellets with a diameter of 3mm;

[0060] (5) Put the glass ball into a muffle furnace for annealing treatment, the annealing temperature is 800°C, and the annealing time is 2h, to obtain spherical colorless aluminum niobate g...

Embodiment 10-18

[0062] A colorless aluminum niobate glass and a preparation method thereof, specifically comprising the following steps:

[0063] (1) Prepare the raw materials in the molar ratio of Table 2, and mix the raw materials in a mortar;

[0064] (2) The powder after mixing is pressed into sheet material under the pressure of 12MPa;

[0065](3) The flake material is calcined at 1100°C for 3 hours, and divided into block raw materials with a mass of about 60mg / block;

[0066] (4) Place the block in the nozzle of the pneumatic suspension furnace, and pass high-purity O 2 To stabilize the block suspended in the air, use three beams of CO 2 Laser heating to 2400°C to heat the block to a molten state, and then cooling at a cooling rate of 250°C / min to obtain glass pellets with a diameter of 3mm;

[0067] (5) Put the glass ball into a muffle furnace for annealing treatment, the annealing temperature is 800°C, and the annealing time is 2h.

[0068] Table 1

[0069]

[0070] Table 2 ...

Embodiment 19-27

[0073] A colorless aluminum niobate glass and a preparation method thereof, specifically comprising the following steps:

[0074] (1) Prepare the raw materials in the molar ratio of Table 3, and mix the raw materials in a mortar;

[0075] (2) The powder after mixing is pressed into sheet material under the pressure of 12MPa;

[0076] (3) The flake material is calcined at 1100°C for 3 hours, and divided into block raw materials with a mass of about 90mg / block;

[0077] (4) Place the block in the nozzle of the pneumatic suspension furnace, and pass high-purity O 2 To stabilize the block suspended in the air, use three beams of CO 2 Laser heating to 2500°C to heat the block to a molten state, and then cooling at a cooling rate of 250°C / min to obtain glass pellets with a diameter of 3.5mm;

[0078] (5) Put the glass ball into a muffle furnace for annealing treatment, the annealing temperature is 810°C, and the annealing time is 3h.

[0079] table 3

[0080]

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Abstract

The invention relates to aluminate-niobate glass and a preparation method and application thereof. The aluminate-niobate glass contains, by mol, 5-20% of Nb2O5, 20-65% of Al2O3, 10-60% of La2O3, 10-20% (not including 10%) of BaO, and 0-10% (not including 0) of other oxides. The problem is solved that high-refractivity glass has high melting temperature, proneness to crystal separation, poor stability and the like; the aluminate-niobate glass with high refractivity and low color dispersion can be attained.

Description

technical field [0001] The invention belongs to the technical field of optical glass materials, and in particular relates to an aluminum niobate glass and its preparation method and application. Background technique [0002] Optical glass is an important part of the optical system, which plays the role of optical transmission and imaging, and can be used in materials such as optical devices, optical fiber communication and optical storage. The emergence of various modern precision devices has higher requirements on the performance of optical materials, among which the two most basic optical constants require glass with higher refractive index and low dispersion. [0003] The glasses disclosed in JP2014210435 and JP2014210436 contain La 2 o 3 , Nb 2 o 5 、Al 2 o 3 and BaO oxide, but the oxide range of the present invention is different from it and there is no intersection. The present invention shrinks the Nb 2 o 5 The range of oxides can reduce the crystallization of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/12
Inventor 陆平张逸轩
Owner WUHAN UNIV OF TECH
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