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Lead-containing selenide glass and preparing process thereof

A technology of selenide and glass, which is applied in the field of lead-containing selenide glass and its preparation, and achieves the effects of simple processing, strong covalency, and improved thermal stability

Inactive Publication Date: 2007-08-01
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still many problems. For example, the mechanical properties and thermodynamic properties of chalcogenide glasses need to be improved urgently. One of the improvement methods is to develop suitable chalcogenide glasses with good thermal stability, without affecting their infrared optical properties. , to improve its performance by microcrystallization process

Method used

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  • Lead-containing selenide glass and preparing process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Formulation design:

[0025] Using the quaternary system of selenium, germanium, arsenic and lead, the components are designed as follows:

[0026] Table 1 Glass composition of Example 1 (at%)

[0027] GeSe 2

As 2 Se 3

PdS

20

70

10

[0028] Batch preparation:

[0029] High-purity (>99.999%) elemental selenium, germanium, arsenic and lead were respectively used as raw materials, and the formula was calculated according to the composition shown in Table 1.

[0030] Raw material purification and drying:

[0031] Put the quartz tubes filled with Se and As respectively into a high-temperature furnace, heat while vacuuming, and raise the temperature to 300°C, the oxides of Se / As are distilled out, and the raw materials are purified. Then accurately weigh the purified raw materials according to the stoichiometric ratio of the designed composition, add an appropriate amount of oxygen scavenger Mg, Zr, etc. (based on the w...

Embodiment 2～7

[0043] In the following examples, the glass preparation method is the same as in Example 1, and the different glass compositions and performance test results used are listed in Table 3, Table 4 and Table 5 respectively.

[0044] Table 3 Glass composition (at%) of Examples 2-4

[0045] Numbering

GeSe 2

As 2 Se 3

PdS

2

20

80

0

3

20

60

20

4

20

50

30

5

80

10

10

6

60

30

10

7

40

50

10

[0046] Table 4 Performance test results of glass in Examples 2-4

[0047]

Numbering

density

(g / cm 3 )

transition temperature

(℃)

Crystallization temperature

(℃)

thermal stability

(℃)

2

4.5255

193.84

-

-

3

4.98062

192.49

283.18

90.6...

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Abstract

The invention discloses a selenide with lead glass and preparing method, which is composed of 0-100% GeSe2, 0-100% As2Se3 and 0-50% PbSe. The selenide with lead glass possesses bigger quality and stronger covalence nature, which improves hot stability of the glass markedly.

Description

technical field [0001] The invention relates to an infrared optical transmission material, an optical lens material for a thermal imaging system, an infrared optical fiber and a preparation method thereof, in particular to lead-containing selenide glass for an optical lens of a thermal imaging system. Background technique [0002] Chalcogenide glass is an excellent amorphous semiconductor material (with a band gap of 1-3Ev), and also an important infrared-transmitting material. Not only can it be prepared by the traditional melt quenching method, but it can also form glass in a wide range of composition, and has the characteristics of continuously adjustable properties. Therefore, it has important practical applications in many aspects such as infrared, optoelectronics, and semiconductor materials. [0003] Since chalcogenide glass has excellent infrared transmission ability, good glass-forming performance and simple processing, it can be used as an optical lens material fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/32C03B5/235
Inventor 杨光任晶许银生章向华杨云霞陈国荣
Owner EAST CHINA UNIV OF SCI & TECH
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