Zirconia single crystal optical fiber and its preparation method and application

A technology of zirconia and optical fiber, applied in chemical instruments and methods, cladding optical fiber, single crystal growth, etc., can solve problems such as inability to perform high temperature measurement, and achieve high hardness, high crystal quality, and high toughness

Active Publication Date: 2020-06-12
江苏晶英光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sapphire crystal fiber cannot be used for high temperature measurements above 2000°C due to its melting point (2050°C) limit
[0005] Ultra-high temperature transient test technology has great application value in the fields of nuclear reactor core, aero-engine, hypersonic vehicle, spacecraft nose cone, etc. Working in harsh environments such as corrosiveness, strong electromagnetic interference, and strong radiation, the traditional contact measurement of precious metals and non-contact infrared temperature measurement can no longer meet the requirements of ultra-high temperature transient temperature measurement, which requires temperature measurement materials and Technology has higher melting point, oxidation resistance, good light transmission characteristics, thermal stability, chemical stability and mechanical strength etc.

Method used

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  • Zirconia single crystal optical fiber and its preparation method and application
  • Zirconia single crystal optical fiber and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] ZrO 2 The preparation method of single crystal fiber is as follows:

[0048] (1) Selection and treatment of source rod and seed crystal

[0049] ZrO 2 The polycrystalline material was cut into two kinds of square rods of 1×1×150mm and 1×1×20mm respectively as raw materials and seed crystals, which were fixed on the Al with grooves with high-temperature ceramic glue. 2 o 3 Dry on rods at 65°C for 4 hours.

[0050] (2) Crystal growth

[0051] a Clean the furnace cavity and laser mirror, fix the prepared raw material on the feeding device, and fix the prepared seed crystal on the upper pulling device. Increase the laser power to 100W to melt the material rod, adjust the center of the material rod to be at the laser reflection focus, continue to increase the power to 140W to form a stable hemispherical melting zone, and keep the temperature for 10 minutes.

[0052] b Lower the seed crystal to make it contact with the melting zone, adjust the position of the seed crystal...

Embodiment 2

[0056] ZrO 2 The preparation method of single crystal fiber is as follows:

[0057] (1) Selection and treatment of source rod and seed crystal

[0058] ZrO 2 The polycrystalline material was cut into two kinds of square rods of 1×1×150mm and 1×1×20mm respectively as raw materials and seed crystals, which were fixed on the Al with grooves with high-temperature ceramic glue. 2 o 3 Dry on rods at 65°C for 4 hours.

[0059] (2) Crystal growth

[0060] a Clean the furnace cavity and laser mirror, fix the prepared raw material on the feeding device, and fix the prepared seed crystal on the upper pulling device. Increase the laser power to 100W to melt the material rod, adjust the center of the material rod to be at the laser reflection focus, continue to increase the power to 140W to form a stable hemispherical melting zone, and keep the temperature for 10 minutes.

[0061] b Lower the seed crystal to make it contact with the melting zone, adjust the position of the seed cryst...

Embodiment 3

[0065] ZrO 2 The preparation method of single crystal fiber is as follows:

[0066] (1) Selection and treatment of source rod and seed crystal

[0067] ZrO 2 The polycrystalline material was cut into two kinds of square rods of 1×1×150mm and 1×1×20mm respectively as raw materials and seed crystals, which were fixed on the Al with grooves with high-temperature ceramic glue. 2 o 3 Dry on rods at 80°C for 4 hours.

[0068] (2) Crystal growth

[0069] a Clean the furnace cavity and laser mirror, fix the prepared raw material on the feeding device, and fix the prepared seed crystal on the upper pulling device. Increase the laser power to 100W to melt the material rod, adjust the center of the material rod to be at the laser reflection focus, continue to increase the power to 140W to form a stable hemispherical melting zone, and keep the temperature for 10 minutes.

[0070] b Lower the seed crystal to make it contact with the melting zone, adjust the position of the seed cryst...

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Abstract

The invention relates to zirconia single-crystal optical fibers as well as a preparation method and application thereof. The crystal molecular formula is ZrO2; the ZrO2 single-crystal optical fibers are fibrous ZrO2 single crystals having a great aspect ratio and have the advantages of ZrO2 single-crystal fibers and ZrO2 polycrystalline fibers at the same time. The zirconia single-crystal opticalfibers have a diameter range of 0.5-1mm and the length of greater than 15cm. The ZrO2 single-crystal fibers grow by means of laser heated pedestal growth (LHPG). The melting point of the zirconia single-crystal optical fibers reaches up to 2715 DEG C. Compared with the prior art, the zirconia single-crystal optical fibers have the excellent physical and chemical properties such as high thermal conductivity, high hardness, high strength, high toughness and very high wear resistance and chemical corrosion resistance, and can used for manufacturing novel high temperature sensors.

Description

technical field [0001] The invention relates to a novel single crystal optical fiber and its preparation method and application, in particular to a zirconia single crystal optical fiber and its preparation method and application, belonging to the technical field of crystals and devices. Background technique [0002] High temperature sensors are mainly used in many fields such as aerospace, weapon manufacturing, nuclear industry, metallurgy, chemical industry, heat treatment, etc., and can measure high temperatures of thousands of degrees. At present, high-temperature thermocouples and tungsten-rhenium thermocouples are generally used in contact high-temperature tests at home and abroad, which basically meet the needs of the medium and low temperature fields. However, with the deepening of research technology, it is necessary to measure the combustion chamber temperature, especially some special combustion fields, such as rocket and missile gas jet temperature, scramjet combu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/16C30B15/16C30B33/02G02B6/02
Inventor 贾志泰王涛张健陶绪堂
Owner 江苏晶英光电科技有限公司
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