Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of yttrium oxide transparent ceramic with high visible light transmittance

A transparent ceramic, visible light technology, applied in the field of solid laser gain medium materials

Inactive Publication Date: 2021-03-16
中红外激光研究院(江苏)有限公司
View PDF7 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Technical problem to be solved: This application discloses a method for preparing transparent yttrium oxide ceramics with high visible light transmittance, and the technical problem to be solved is to eliminate carbon pollution

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of yttrium oxide transparent ceramic with high visible light transmittance
  • Preparation method of yttrium oxide transparent ceramic with high visible light transmittance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A method for preparing yttrium oxide transparent ceramics with high visible light transmittance, comprising the following steps:

[0030] The first step, powder preparation: weigh 50g of high-purity Y 2 o 3 as raw material, the Y 2 o 3 Purity>99.99%, particle size 60-200nm, add 46mL of absolute ethanol as ball milling medium, take out the slurry after planetary ball milling, ball milling speed is 140 rpm, ball milling for 20 hours, pour the milled slurry into evaporation In a dish, dry at 70°C for 24 hours; after drying, pass through a 140-mesh sieve for 3 times to obtain high-dispersibility, low-agglomeration Y 2 o 3 Powder;

[0031] The second step, powder molding: Y 2 o 3 The powder is filled into a stainless steel mold, pressurized on both sides at 3MPa, and held for 2 minutes, then vacuum-molded, and held for 5 minutes under 200MPa cold isostatic pressure to obtain a high-density Y 2 o 3 ceramic green body;

[0032] The third step, ceramic sintering: the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle sizeaaaaaaaaaa
flexural strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of yttrium oxide transparent ceramic with high visible light transmittance. The preparation method comprises the following steps: carrying out ball milling, dry pressing molding and cold isostatic pressing molding on a high-purity Y2O3 raw material to obtain a biscuit, and sequentially carrying out vacuum sintering, hot isostatic pressing sintering andhydrogen atmosphere heat treatment. Compared with the traditional air or oxygen heat treatment process, higher visible light transmittance can be achieved through the hydrogen atmosphere heat treatment. The visible light transmittance of the ceramic reaches up to 80%.

Description

technical field [0001] The invention belongs to the field of solid laser gain medium materials, in particular to a preparation method of yttrium oxide transparent ceramics with high visible light transmittance. Background technique [0002] Yttria transparent ceramics have excellent thermal conductivity, low thermal expansion coefficient, and high infrared transmittance, making them ideal materials for optical windows, missile domes, and laser gain media. In recent years, rare earth-doped yttrium oxide transparent ceramics have obtained high-efficiency laser output in solid-state lasers of 1 μm, 1.9 μm, 2.1 μm and 2.7 μm. As an excellent mid-infrared light-transmitting material, the infrared absorption cut-off edge of yttrium oxide is as high as 9.0 μm, and the theoretical transmittance in the 0.3-6 μm wide band is close to 81%. In addition, yttrium oxide has very low infrared emissivity, so it is one of the ideal materials for infrared domes. However, the above-mentione...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/505C04B35/622C04B35/64
CPCC04B35/505C04B35/622C04B35/64C04B2235/9653C04B2235/656C04B2235/6562C04B2235/658C04B2235/6581C04B2235/6582C04B2235/664C04B2235/785C04B2235/786C04B2235/96C04B2235/9607
Inventor 王俊刘鹏唐定远沈德元
Owner 中红外激光研究院(江苏)有限公司