Rare earth ultraviolet light transmitting glass

An ultraviolet light and glass technology, which is applied in the field of electric vacuum manufacturing, can solve the problems of large attenuation of ultraviolet exposure transmittance, low chemical stability against water, and no major improvement in quality.

Inactive Publication Date: 2013-08-14
陈醒琴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] my country produced UV-transparent glass as early as the 1970s, but it has many gas lines, stripes, and sand spots, and its chemical stability against water is low. The UV transmittance at the glass thickness of 1mm and wavelength of 253.7nm is only There is 60-70%; ...

Method used

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  • Rare earth ultraviolet light transmitting glass

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0008] Concrete embodiment of the present invention and steps are as follows:

[0009] Table 1, specific examples of glass components:

[0010] material ingredient(%)

Example 1

Example 2

Example 3

SiO 2

64.68

64.17

64.71

Al 2 o 3

4.53

4.36

4.53

B 2 o 3

22.41

23.15

22.16

Na 2 o

6.64

6.32

6.41

rare earth

0.59

0.70

0.66

LiO

0.42

0.48

0.64

ZnO

0.72

0.81

0.87

K 2 o

0.0071

0.0069

0.0157

Fe 2 o 3

0.0029

0.0031

0.0043

[0011] Table 2, the physical and chemical performance indicators corresponding to the 3 embodiments in Table 1:

[0012] Physical and chemical performance indicators

Example 1

Example 2

Example 3

Expansion coefficient (×10 -7 / °C)

50.31

50.16

50.3...

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Abstract

The invention discloses rare earth ultraviolet light transmitting glass. According to the technical scheme, the rare earth ultraviolet light transmitting glass comprises the ingredients in percentage by weight of oxides: 62-65% of SiO2, 3-5% of Al2O3, 22-24% of B2O3, 5-7% of Na2O, 0.1-1% of rare earth, 0.1-1% of Li2O, and 0.1-1% of ZnO. The ultraviolet light transmittance at a UVC (ultraviolet C) wave band can be greater than 89-90%, and the rare earth ultraviolet light transmitting glass can be directly sealed-in with refractory metals (tungsten, tantalum, molybdenum, niobium, hafnium, chromium, vanadium, zirconium and titanium) and kovar alloy. The rare earth ultraviolet light transmitting glass is applicable to manufacturing glass bulbs of a phototube, a photomultiplier tube, an ultraviolet sterilization tube, an ozone generation tube and the like, or light window materials.

Description

technical field [0001] The invention relates to the field of electric vacuum manufacturing, in particular to a rare-earth ultraviolet-transmitting glass. Background technique [0002] my country produced UV-transparent glass as early as the 1970s, but it has many gas lines, stripes, and sand spots, and its chemical stability against water is low. The UV transmittance at the glass thickness of 1mm and wavelength of 253.7nm is only There are 60-70%; moreover, the UV exposure transmittance attenuation is large, and the chemical stability against water is poor; until now, its quality has not been greatly improved, and its application still cannot meet the requirements of manufacturing high-end vacuum devices. Contents of the invention [0003] In order to overcome the defects of the prior art, the present invention discloses a design scheme applied to the UVC band rare earth ultraviolet light-transmitting glass components, the components of which are SiO by weight percentage in...

Claims

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Application Information

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IPC IPC(8): C03C3/095
Inventor 陈醒琴
Owner 陈醒琴
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