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A kind of borosilicate glass, anti-halation input window glass and its preparation method and application

A borosilicate glass and window glass technology, which is applied in the field of optical materials, can solve the problems of GaAs composition mismatch, failure to meet the needs of thermal cleaning, failure to meet the input window, etc.

Active Publication Date: 2021-12-14
CHINA BUILDING MATERIALS ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the softening point of the input window is greater than 700°C, the blackening temperature of the glass will be too high, resulting in segregation of the GaAs material itself, resulting in a mismatch of GaAs components; if the softening point is lower than 600°C, the GaAs cathode at around 600°C cannot be satisfied. The need for thermal cleaning of components prior to activation
[0005] The thermal expansion coefficient of the input window for the currently produced low-light image intensifier is 51×10 -7 ℃, the softening point is about 590℃, which cannot meet the requirements of the third-generation low-light image intensifier, and there is no input window that meets the requirements of the third-generation low-light image intensifier
[0006] Now no thermal expansion coefficient, softening point meets the requirements of third-generation low-light image intensifiers, and an input window with anti-halation capability

Method used

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  • A kind of borosilicate glass, anti-halation input window glass and its preparation method and application
  • A kind of borosilicate glass, anti-halation input window glass and its preparation method and application
  • A kind of borosilicate glass, anti-halation input window glass and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] According to the glass composition of Example 1 in Table 1, through calculation and take by weighing 4207 grams of SiO 2 , 2180 g H 3 BO 3 , 1507 grams of Al(OH) 3 , 353 g Li 2 CO 3 , 536 g Na 2 CO 3 , 71 grams of NaCl, 157 grams of K 2 CO 3 , 7.14 g Sb 2 o 3 , 42.8 grams of PbO, 14.27 grams of As 2 o 3 Oxides and compounds were put into a mortar and ground and mixed evenly, and then their mixture was added to a platinum crucible and melted at 1560°C for 10 hours. The molten glass is poured into a heat-resistant cast iron mold for molding and annealed, then put into a Maofu furnace at 500°C for 2 hours, then turn off the power to cool down. Remove the glass that has cooled to room temperature. After testing, its softening temperature is 685°C and its coefficient of thermal expansion is 61×10 -7 / °C. Then make the glass into stepped glass, put it into a closed container and heat it to 557°C, fill it with hydrogen, the hydrogen pressure is 0.17MPa, keep the...

Embodiment 2

[0052] According to the glass composition of Example 7 in Table 1, through calculation and take by weighing 4077 grams of SiO 2 , 2121 g H 3 BO 3 , 1468 grams of Al(OH) 3 , 352 g Li 2 CO 3 , 524 g Na 2 CO 3 , 70.3 g NaCl, 449 g K 2 CO 3 , 49.75 g Sb 2 o 3 , 7.11 grams of PbO, 7.11 grams of As 2 o 3 Oxides and compounds were put into a mortar and ground and mixed evenly, and then their mixture was added to a platinum crucible and melted at 1560°C for 10 hours. The molten glass is poured into a heat-resistant cast iron mold for molding and annealed, then put into a Maofu furnace at 490°C for 2 hours, then power off and cool down. Remove the glass that has cooled to room temperature. After testing, its softening temperature is 664°C, and its thermal expansion coefficient is 66×10 -7 / °C. Then make the glass into stepped glass, put it into a closed container and heat it to 547°C, fill it with hydrogen, the hydrogen pressure is 0.17MPa, keep the pressure for 120 hour...

Embodiment 3

[0054] According to the glass composition of Example 10 in Table 1, through calculation and take by weighing 4123 grams of SiO 2 , 2136 g H 3 BO 3 , 1480g Al(OH) 3 , 352 g Li 2 CO 3 , 710 g Na 2 CO 3 , 70.4 g NaCl, 157 g K 2 CO 3 , 14.23 g Sb 2 o 3 , 42.69 grams of PbO, 7.11 grams of As 2 o 3 Oxides and compounds were put into a mortar and ground and mixed evenly, and then their mixture was added to a platinum crucible and melted at 1560°C for 10 hours. The molten glass is poured into a heat-resistant cast iron mold for molding and annealed, then put into a Maofu furnace at 490°C for 2 hours, then power off and cool down. Remove the glass that has cooled to room temperature. After testing, its softening temperature is 664°C and its coefficient of thermal expansion is 66.8×10 -7 / °C. Then make the glass into stepped glass, put it into a closed container and heat it to 553°C, fill it with hydrogen, the hydrogen pressure is 0.10MPa, keep the pressure for 120 hours,...

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Abstract

The invention discloses a borosilicate glass, an anti-halation input window glass and a preparation method thereof, and relates to the field of optical materials. The components of the borosilicate glass include variable-valent ion components; the variable-valent ion components include arsenic trioxide, lead oxide and antimony trioxide; and the total content of the variable-valent ion components is greater than or equal to 0.85 wt%. The thermal expansion coefficient of the anti-halation input window glass prepared by the present invention is 58~68×10 ‑7 / °C, the softening point is 600°C-700°C, and it has a light absorbing layer on the outside, which can achieve the effect of anti-halation; and the anti-halation input window glass can meet the requirements of the third-generation low-light image intensifier.

Description

technical field [0001] The present application relates to the field of optical materials, in particular to a borosilicate glass, an anti-halation input window glass and a preparation method thereof, in particular to a borosilicate glass used for low-light image intensifiers, an anti-halation Enter glazing, its preparation and use. Background technique [0002] The anti-halation glass input window in the low-light image intensifier is a stepped glass with different diameters on both sides, the middle is transparent glass, and the periphery is wrapped with a layer of black opaque glass. Indium-sealed with the image intensifier tube case. [0003] In the manufacturing process of the second-generation and super-second-generation low-light image intensifiers, the input window and the shell indium are sealed together, and the multi-alkali photocathode is deposited on the surface of the input window and undergoes a 520°C, 24-hour baking. Process; therefore, there is no requiremen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/11C03C23/00C03C1/00G02B1/00
Inventor 刘峻朱永昌于雷马素珍
Owner CHINA BUILDING MATERIALS ACAD