Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing YAG transparent ceramics based on improved Isobam gel system

A technology of transparent ceramics and gels, applied in the field of transparent ceramics preparation, can solve the problems of reducing the transmittance of YAG transparent ceramics, insufficient densification of green bodies, affecting the efficiency of preparation, etc. The effect of improving transmittance

Active Publication Date: 2018-09-11
XUZHOU NORMAL UNIVERSITY
View PDF9 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in order to ensure better fluidity of the slurry, the current gel forming technology generally has a solid content of less than 70wt.%, which leads to insufficient densification of the green body and low density
Due to the inherent properties of the Isobam gel system, the strength of the green body is not high, and the gel time is also long, which affects the efficiency of the preparation
Therefore, the lower solid content of the slurry and the lower density of the green body greatly reduce the transmittance of YAG transparent ceramics, and ultimately affect the practical application of this molding method in YAG transparent ceramics

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
  • Method for preparing YAG transparent ceramics based on improved Isobam gel system
  • Method for preparing YAG transparent ceramics based on improved Isobam gel system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A method for preparing YAG transparent ceramics based on improved Isobam gel system, it comprises the following steps:

[0046] Step 1. Follow Y 3 Al 5 o 12 The stoichiometric ratio of the molecular formula weighs the high-purity nano Y 2 o 3 Powder (average particle size: 500nm) 53.676g, high-purity nano-Al 2 o 3 Powder (average particle size: 200nm) 71.324g;

[0047] Step 2. Put 375g of high-purity alumina grinding balls, 156.25ml of absolute ethanol, 0.5ml of dispersant PEI, and sintering aid SiO 2 0.625g was put into a nylon ball mill jar together with the weighed nano-oxide powder, mixed and ball milled at a speed of 160r / min for 15 hours to obtain a mixed slurry A;

[0048] Step 3: Take out the mixed slurry A and place it in an oven at 60°C for 24 hours, pass through a 150-mesh sieve, place the sieved powder in a muffle furnace for calcination, and raise the temperature from room temperature to 700°C, the heating rate 2°C / min, keep warm for 8 hours, then ...

Embodiment 2

[0059] A method for preparing YAG transparent ceramics based on improved Isobam gel system, it comprises the following steps:

[0060] Step 1. Follow Y 3 Al 5 o 12 The stoichiometric ratio of the molecular formula weighs the high-purity nano Y 2 o 3 Powder (average particle size: 600nm) 34.352g, high-purity nano-Al 2 o 3 Powder (average particle size: 600nm) 45.648g;

[0061] Step 2. Put 80g of high-purity alumina grinding balls, 66.67ml of absolute ethanol, 0.08ml of dispersant PEI, and sintering aid SiO 2 Put 0.04g and MgO 0.04g together with the weighed nano-oxide powder into an alumina ceramic ball mill pot, mix and ball mill at a speed of 120r / min for 24 hours to obtain a mixed slurry A;

[0062] Step 3: Take out the mixed slurry A and place it in an oven at 50°C for 48 hours, pass through a 100-mesh sieve, place the sieved powder in a muffle furnace for calcination, and raise the temperature from room temperature to 800°C, the heating rate 2°C / min, keep warm for...

Embodiment 3

[0070] A method for preparing YAG transparent ceramics based on improved Isobam gel system, it comprises the following steps:

[0071] Step 1. Follow Y 3 Al 5 o 12 The stoichiometric ratio of the molecular formula weighs the high-purity nano Y 2 o 3 Powder (average particle size: 550nm) 214.703g, high-purity nano-Al 2 o 3 Powder (average particle size: 400nm) 285.297g;

[0072] Step 2. Put 1200g of high-purity alumina grinding balls, 604.17ml of absolute ethanol, 4ml of dispersant PEI, and sintering aid SiO 2 1.25 g was put into a polytetrafluoroethylene ball mill jar together with the weighed nano-oxide powder, and mixed and ball milled at a speed of 150 r / min for 20 hours to obtain a mixed slurry A;

[0073] Step 3: Take out the mixed slurry A and place it in an oven at 55°C for 36 hours, pass through a 200-mesh sieve, place the sieved powder in a muffle furnace for calcination, and raise the temperature from room temperature to 900°C. 3°C / min, keep warm for 7 hours...

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
The average particle sizeaaaaaaaaaa
The average particle sizeaaaaaaaaaa
The average particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing YAG transparent ceramics based on an improved Isobam gel system. The method comprises the following steps that (1) grinding balls, an organic solvent, adispersing agent A, a sintering additive and ceramic powder are placed into a ball mill tank, ball milling and mixing are carried out to obtain mixed slurry A; (2) the mixed slurry A is dried, sievedand calcined to obtain raw material powder conducted with gel injection molding; (3) deionized water, an Isobam solution, an epoxy resin cross-linking agent, a pH conditioning agent, a dispersing agent B and the grinding balls are added into the ball mill tank, lastly, the raw material powder is added, after preliminary stirring is carried out, and then ball milling and mixing are carried out to obtain mixed slurry B with high solid content; (4) vacuum degassing, injection molding, gel drying and curing and gel discharging are carried out; (5) vacuum sintering, annealing and polishing are carried out on biscuit after gel discharging, and the YAG transparent ceramics are obtained. The provided method for preparing the YAG transparent ceramics based on the improved Isobam gel system has theadvantages that the solid content of the ceramic slurry is improved, the density of the biscuit is improved, the permeability of the YAG transparent ceramics prepared by vacuum sintering is greatly improved, the technology is simple, and the method is conductive to industrialized production.

Description

technical field [0001] The invention belongs to the technical field of preparation of transparent ceramics, in particular to a method for preparing YAG transparent ceramics based on an improved Isobam gel system. Background technique [0002] Yttrium aluminum garnet (YAG for short) has a stable cubic phase structure, no birefringence, high melting point, and good chemical and photochemical stability. It is widely used in laser matrix gain materials, and can also be used to make high-temperature visible and infrared windows. Compared with YAG single crystal, YAG transparent ceramics can meet the large size and higher doping concentration required for the preparation of high-power lasers, so YAG has almost all the advantages of an ideal laser host material, and has shown good performance in replacing YAG single crystal application prospects. The preparation of YAG transparent ceramics includes powder preparation, molding, sintering and machining processes. The purpose of the...

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
IPC IPC(8): C04B35/44C04B35/634C04B35/622
CPCC04B35/44C04B35/622C04B35/63424C04B35/63456C04B35/63476C04B2235/3206C04B2235/3208C04B2235/3225C04B2235/3418C04B2235/5445C04B2235/6023C04B2235/6562C04B2235/6565C04B2235/6567C04B2235/662C04B2235/9653
Inventor 张乐姚庆袁子田周天元高光珍王骋陈浩
Owner XUZHOU NORMAL UNIVERSITY
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com