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A laser glass ion exchange enhancement method

A laser glass and ion exchange technology, applied in the field of laser glass, can solve the problems of reduced chemical stability of glass, easy to be corroded, and the surface cannot be effectively repaired, etc., to achieve enhanced chemical stability, long stress relaxation time, and improved surface chemical stability. The effect of stability

Active Publication Date: 2020-10-16
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the surface cannot be effectively repaired after the exchange, and because the surface K + Too much is easy to be corroded, and the chemical stability of the glass will be relatively reduced

Method used

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  • A laser glass ion exchange enhancement method
  • A laser glass ion exchange enhancement method
  • A laser glass ion exchange enhancement method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The present embodiment adopts phosphate laser glass, and the adopted mixed molten salt 1, mixed molten salt 2 and mixed acid have the following compositions:

[0041] Mix molten salt 1:

[0042] Composition wt%

[0043] RbNO3 10%

[0044] CsNO3 90%

[0045] Mixed molten salt 2:

[0046] Composition wt%

[0047] LiNO3 15%

[0048] NaNO3 85%

[0049] Mixed acid:

[0050]

[0051] This embodiment includes the following steps:

[0052] S11: The sample is washed with deionized water and dried.

[0053] S12: Put the mixed molten salt 1 prepared in proportion into the ion exchange vessel, put it in a muffle furnace to heat up to 450°C and stabilize, and then preheat the sample processed in step S11 to 340°C and transfer it to the ion exchange vessel.

[0054] S13: in a muffle furnace at 450° C. for 8 hours, taking out and annealing to room temperature in an annealing furnace.

[0055] S21: Wash the sample processed in step S13 with deionized water and dry it.

[...

Embodiment 2

[0062] The present embodiment adopts phosphate laser glass, and the adopted mixed molten salt 1, mixed molten salt 2 and mixed acid have the following compositions:

[0063] Mix molten salt 1:

[0064] Composition wt%

[0065] RbNO3 20%

[0066] CsNO3 80%

[0067] Mixed molten salt 2:

[0068] Composition wt%

[0069] LiNO3 11%

[0070] NaNO3 89%

[0071] Mixed acid:

[0072]

[0073] This embodiment includes the following steps:

[0074] S11: The sample is washed with deionized water and dried.

[0075] S12: Put the mixed molten salt 1 prepared in proportion into the ion exchange vessel, put it in a muffle furnace to heat up to 430°C and stabilize, and then preheat the sample processed in step S11 to 340°C and transfer it to the ion exchange vessel.

[0076] S13: In a muffle furnace, the temperature is kept at 430° C. for 10 hours, then taken out and annealed to room temperature in an annealing furnace.

[0077] S21: Wash the sample processed in step S13 with dei...

Embodiment 3

[0084] The present embodiment adopts phosphate laser glass, and the adopted mixed molten salt 1, mixed molten salt 2 and mixed acid have the following compositions:

[0085] Mix molten salt 1:

[0086] Composition wt%

[0087] RbNO3 30%

[0088] CsNO3 70%

[0089] Mixed molten salt 2:

[0090] Composition wt%

[0091] LiNO3 8%

[0092] NaNO3 92%

[0093] Mixed acid:

[0094]

[0095] This embodiment includes the following steps:

[0096] S11: The sample is washed with deionized water and dried.

[0097] S12: Put the mixed molten salt 1 prepared in proportion into the ion exchange vessel, put it in a muffle furnace to heat up to 420°C and stabilize, and then preheat the sample processed in step S11 to 300°C and transfer it to the ion exchange vessel.

[0098] S13: After keeping in a muffle furnace at 420° C. for 13 hours, take out and anneal to room temperature in an annealing furnace.

[0099] S21: Wash the sample processed in step S13 with deionized water and dry...

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Abstract

The invention provides an ion exchange enhancement method of laser glass. The method comprises the following steps: S1, ion exchange: carrying out ion exchange treatment of the laser glass by using mixed molten salt formed by a mixture of RbNO3 and CsNO3; S2, surface heat treatment: carrying out rapid heat treatment of the laser glass after being subjected to ion exchange in the step S1 by using mixed molten salt formed by a mixture of NaNO3 and LiNO3; and S3, surface acid treatment: carrying out surface acid treatment of the laser glass after subjected to surface heat treatment in the step S2by using mixed acid formed by a mixture of any two of HCl, H2SO4 and CH3CH2COOH or a mixture of HCl, H2SO4 and CH3CH2COOH. A pressure stress layer with higher stress value and deeper depth can be formed on the surface of the laser glass treated by the method; meanwhile, the stress relaxation time is longer; the chemical stability is greatly improved; the laser glass has higher microhardness, fracture resistance and brittleness temperature and stronger water resistance.

Description

technical field [0001] The invention relates to laser glass, in particular to a method for enhancing ion exchange of laser glass. Background technique [0002] Laser glass, including phosphate laser glass, silicate laser glass and borosilicate laser glass, etc., its application fields cover laser fusion, laser weapons, laser ranging, optical communication waveguide amplifiers, ultra-short pulse lasers, etc. . Among them, phosphate laser glass has excellent properties such as moderate phonon energy, high solubility to rare earth ions, and small nonlinear coefficient, making it the most widely used laser glass medium. [0003] As the working medium of high repetition rate and high average power solid-state lasers, laser glass has higher and higher requirements for its thermal shock resistance under high-intensity optical pumping conditions. However, laser glass is a typical brittle material, with a large expansion coefficient and poor chemical stability. There are defects ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C21/00
CPCC03C21/002
Inventor 陈辉宇胡丽丽陈伟孟涛何宏
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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