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Method for treating surface of fluorphosphate glass

A fluorophosphate glass and surface treatment technology, applied in the field of laser glass, can solve the problems of increased roughness, unsatisfactory effect, surface impurities and crack layers are not eliminated, achieve high-power laser output, improve glass surface Topography, removal of scratches and the effect of microcracked layers

Inactive Publication Date: 2015-09-23
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

If a weak acid is used or the corrosion time is short, the surface impurities and crack layers are not eliminated, and the desired effect cannot be achieved; if a strong acid is used or the corrosion time is long, there will be more corrosion pits on the surface, and the surface roughness will change with the reaction. to increase

Method used

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  • Method for treating surface of fluorphosphate glass
  • Method for treating surface of fluorphosphate glass
  • Method for treating surface of fluorphosphate glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The present embodiment fluorophosphate glass surface treatment method, this method comprises the following steps:

[0028] 1) configure the described mixed acid and mixed alkali solution in the following proportions;

[0029] The mixed acid is composed of hydrochloric acid, perchloric acid and hydrofluoric acid, and its composition is as follows:

[0030]

[0031] The mixed alkali solution is composed of potassium hydroxide and sodium hydroxide in the following proportions:

[0032] Composition mol%

[0033] KOH60

[0034] NaOH 40

[0035] 2) Put the polished fluorophosphorus glass into a polytetrafluoroethylene box, add deionized water, then put it into an ultrasonic cleaner, wash it at 30°C for 5 minutes, and take out the fluorophosphorus glass;

[0036] 3) The mixed acid configured to be diluted is composed of the described mixed acid and pure water in a molar percentage of 1:1;

[0037] 4) Put the fluorophosphorus glass ultrasonically cleaned with deionized ...

Embodiment 2

[0042] The method for treating the surface of fluorophosphate glass in this embodiment comprises the following steps:

[0043] 1) configure the described mixed acid and mixed alkali solution in the following proportions;

[0044] The mixed acid is composed of hydrochloric acid, perchloric acid and hydrofluoric acid, and its composition is as follows:

[0045]

[0046] The mixed lye is composed of potassium hydroxide and sodium hydroxide in the following proportions:

[0047] Composition mol%

[0048] KOH60

[0049] NaOH 40

[0050] 2) Put the polished fluorophosphorus glass into a polytetrafluoroethylene box, add deionized water, then put it into an ultrasonic cleaner, wash it at 30°C for 5 minutes, and take out the fluorophosphorus glass;

[0051] 3) The mixed acid configured to be diluted is composed of the described mixed acid and pure water in a molar percentage of 1:1;

[0052] 4) Put the fluorophosphorus glass ultrasonically cleaned with deionized water into a po...

Embodiment 3

[0057] The method for treating the surface of fluorophosphate glass in this embodiment comprises the following steps:

[0058] 1) configure the described mixed acid and mixed alkali solution in the following proportions;

[0059] The mixed acid is composed of hydrochloric acid, perchloric acid and hydrofluoric acid, and its composition is as follows:

[0060]

[0061] The mixed alkali solution is composed of potassium hydroxide and sodium hydroxide in the following proportions:

[0062] Composition mol%

[0063] KOH60

[0064] NaOH 40

[0065] 2) Put the polished fluorophosphorus glass into a polytetrafluoroethylene box, add deionized water, then put it into an ultrasonic cleaner, wash it at 30°C for 5 minutes, and take out the fluorophosphorus glass;

[0066] 3) The mixed acid configured to be diluted is composed of the mixed acid and pure water in a molar percentage of 1:6;

[0067]4) Put the fluorophosphorus glass ultrasonically cleaned with deionized water into a p...

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Abstract

The invention discloses a method for treating the surface of fluorphosphate glass. The method is used for treating the surface of glass by adopting the manner of combination of chemical corrosion and mechanical polishing. According to the method, a crack layer as well as impurities accumulated at scratches, which is caused by machining the fluorphosphate glass, can be effectively eliminated, the surface defects are reduced, and the roughness of the surface of the glass is reduced. The method comprises the following concrete steps: firstly, cleaning impurities, which are accumulated on the surface, with mixed acid to expose the scratches on the surface layer; secondly, corroding the surface of the glass with alkali liquor to remove a microcrack layer and the scratches; finally, performing secondary polishing to enable the surface of the glass to be transparent and smooth. The method has the advantages that the impurities and the crack layer, which are arranged on the surface of the glass, are respectively removed by a mixed acid solution and a mixed base solution, and the roughness of the surface of the glass can be reduced.

Description

technical field [0001] The invention relates to laser glass, in particular to a surface treatment method for fluorophosphate glass. technical background [0002] Fluorophosphate glass is an optical material that combines the advantages of fluoride glass and phosphate glass, and has a low nonlinear refractive index (n 2 ), high Abbe number, negative refractive index temperature coefficient and other unique optical properties, and at the same time, rare earth ions doped in fluorophosphate glass with high concentration and wide gain bandwidth, making it suitable for high-power ultrashort pulse lasers, up-conversion Lasers and other technical fields have broad application prospects. [0003] After mechanical cold working of fluorophosphate glass, it is inevitable to introduce subsurface defects, such as scratches, impurities, and pits. The existence of surface defects increases the laser damage threshold and reduces the high-power laser output. Studies have found that acid tr...

Claims

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Application Information

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IPC IPC(8): C03C15/00
Inventor 王超张丽艳陈辉宇胡丽丽
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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