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Lad containing sulfide glass and its preparationm method

A sulfide and glass technology, applied in the field of lead-containing sulfide glass and its preparation, can solve the problems of weak bond strength, limitation, poor thermomechanical properties, etc., and achieve the effects of high mechanical strength, short processing cycle and high efficiency

Inactive Publication Date: 2006-02-22
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, chalcogenide glasses have weak bond strength and poor thermomechanical properties, which limit their practical applications.

Method used

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  • Lad containing sulfide glass and its preparationm method
  • Lad containing sulfide glass and its preparationm method
  • Lad containing sulfide glass and its preparationm method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Formulation design:

[0033] Using the quaternary system of germanium, antimony, sulfur and lead, the components are designed as follows:

[0034] GeS 2

[0035] Raw material purification:

[0036] Sulfur is purified by distillation to remove moisture and other impurities in the sulfur. Put the quartz tube filled with commercial sulfur (99.999%) into the furnace, heat it while vacuuming, and raise the temperature to 170°C. At this temperature, the water quickly escapes, and the sulfur vapor recrystallizes in the cooling part, thereby being purified. The oxide layer on the surface of the high-purity raw material lead (99.999%) is rubbed off with sandpaper, and then the surface is washed with alcohol. The oxide layer on the surface of the high-purity raw material germanium (99.999%) is eliminated by the oxygen scavenger Mg. Based on the weight of the batch, the amount of Mg added is 250ppm. During the melting process, Mg can be preferentially combined with...

Embodiment 2～9

[0053] In each of the following examples, the glass preparation method is the same as Example 1, and the different glass compositions and performance test results used are listed in Table 3 and Table 4 respectively.

[0054] Example

[0055]

[0056] in:

Embodiment 2

[0057] The glass melting process condition of embodiment 2 is as follows:

[0058] Melting temperature is 900°C, heat preservation for 12 hours;

[0059] The processing conditions of step microcrystallization heat treatment step are as follows:

[0060] Put the cooled glass sample back into the muffle furnace and heat it to 350°C for 350 hours. After the heat preservation is over, the muffle furnace is closed, and the glass sample is cooled to 20°C along with the furnace.

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Abstract

The invention discloses the composition, preparation method and micro crystallization method for lead-containing sulfide glass used in infrared optics, nonlinear optics and optoelectronics. Wherein, the main composition is sulfur, germanium, stibium and lead that also serves as crystal nucleus agent. The preparation method comprises: (a) pretreating the quartz ampoule; (b) preparing glass batch; (c) sealing in vacuum; (d) melting glass; (e) micro crystallizing the glass. The result shows that the product has well performance particular to special permeance ability on infrared zone of 1-12um.

Description

technical field [0001] The present invention relates to infrared optical transmission materials, optical lens materials for thermal imaging systems, infrared optical fiber materials, nonlinear optical materials and preparation methods thereof, in particular to sulfides for optical lenses of thermal imaging systems using high-concentration lead as a nucleating agent Glass and corresponding glass-ceramics. Background technique [0002] Chalcogenide glass is not only an important amorphous semiconductor material (band gap of 1-3eV), but also an extremely important infrared-transmitting material; it can not only be obtained conveniently by traditional melt quenching method, but also can be Glasses are formed over a wide composition range; therefore, they have been extensively studied and have important practical applications in many fields as infrared, optoelectronic, semiconductor materials, etc. However, chalcogenide glasses have weak bond strength and poor thermomechanical p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/32C03B5/235C03B32/02
Inventor 夏方赵东辉章向华杨云霞王华陈国荣
Owner EAST CHINA UNIV OF SCI & TECH
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