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

Yttrium coated stable zirconium oxide powder, preparation and application thereof

A technology of yttrium-stabilized zirconia and stabilized zirconia, which is applied in the field of coating preparation, can solve the problems of poor thermal stability and easy sintering, and achieve the effects of good anti-sintering performance, low production cost and easy control

Active Publication Date: 2008-12-10
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
View PDF0 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the shortcomings of the existing yttrium-stabilized zirconia (YSZ) coatings, which are easy to sinter at high temperatures and have poor thermal stability, the invention provides a core-shell structure modified YSZ ceramic powder for thermal barrier coatings, which is characterized in that the powder The body is a heterogeneously coated YSZ powder prepared by heterogeneous precipitation method using yttrium stabilized zirconia (YSZ) with a particle size of 20-40 μm as the raw material. The coating layer is hundreds of nanometers in diameter and several microns in length. Rod crystal structure, relatively complete coating

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
  • Yttrium coated stable zirconium oxide powder, preparation and application thereof
  • Yttrium coated stable zirconium oxide powder, preparation and application thereof
  • Yttrium coated stable zirconium oxide powder, preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Disperse 50g of YSZ powder in 100g of lanthanum nitrate solution with a concentration of 0.3mol / L, ultrasonically disperse for 30min, weigh urea and add it to the above solution, urea and La 3+ The concentration ratio was 5:1. The suspension was heated in a water bath at 90°C with constant stirring and kept for 30 hours. After cooling, it was centrifuged and dried in an oven at 70°C for 24 hours.

[0036] Weigh 500 g of the powder obtained above, add 50 g of PVA with a concentration of 5 wt %, grind with a mortar, and sieve to obtain a thermal spray powder with relatively uniform particle size distribution and good fluidity.

[0037] The alloy substrate is selected as the substrate, and the substrate is cleaned with ethanol before spraying, and after sandblasting, the treated sample is immediately plasma sprayed. The spraying powder adopts the above-mentioned 100-200 mesh modified powder. For the plasma spraying process, the current is 660A, the spraying distance is 13...

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

No PUM Login to View More

Abstract

The invention relates to a modified yttrium coating stable zirconia powder body and a preparation method and an application thereof, which belong to the coating preparation field. The invention takes a YSZ powder body as a raw material, adopts a non-homogeneous phase precipitation method to prepare an outphase coating YSZ powder body, and obtains a coating YSZ powder body with good effects through controlling conditions such as solution concentration, reaction temperature and time, etc. A thermal barrier coating with anti-sintering performance, a slow grain growth at a high temperature and good thermal insulating performance can be obtained after the powder body undergoes granulation and plasma spraying.

Description

technical field [0001] The invention relates to a modified coated yttrium-stabilized zirconia powder and a preparation method and application thereof, belonging to the field of coating preparation. Background technique [0002] The development of my country's aerospace industry and the urgent need for energy-saving and emission-reduction technologies have put forward higher requirements for the thermal efficiency of engines or gas turbines, which means that the temperature of hot-end components such as combustion chambers needs to be further increased. At present, the existing superalloys are difficult to meet the requirements. The usual solutions to this problem include developing new superalloys, improving cooling technology, and preparing thermal barrier coatings (Thermal Berrier Coatings, TBC) on the surface of the hot end parts of superalloys. Due to the limitation of the melting point of the metal alloy, the potential to further increase the working temperature is very...

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): C04B35/628C04B35/48
Inventor 高彦峰刘云罗宏杰陶顺衍周霞明
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com