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

Method for preparing zirconium oxide thermal barrier coating by spraying process

A thermal barrier coating, zirconia technology, applied in the field of material science, can solve problems such as coating failure, and achieve the effects of less agglomeration, high reactivity, and excellent resistance to molten salt corrosion.

Active Publication Date: 2013-09-11
GUANGXI XUTENG INDUSTRIAL GROUP CO LTD
View PDF8 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of preparing thermal barrier coatings, Y is usually used in the prior art 2 o 3 、 Ta 2 o 5 、Nd 2 o 3 or or La 2 o 3 As a stabilizer component, the thermal corrosion caused by the chemical reaction between the above components and impurities such as vanadium salt and sodium salt in the oil at high temperature is also a common factor leading to coating failure

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A, the preparation of nanoscale ZrO2 powder

[0044] (1) Weigh 230 parts by weight of Zr(OH) 4 and 33 parts by weight of YCl 3 , added to deionized water to prepare an acidic solution with a concentration of 6%, heated to 65°C under stirring conditions, completely dissolved and mixed thoroughly;

[0045] (2) Take 660 parts by weight of potassium hydroxide, add it to deionized water to prepare a 13% alkaline solution, add the acidic solution prepared in the above steps dropwise to the alkaline solution at a constant speed, and adjust the pH value to 9.4, so that Co-precipitate the two salts to obtain yttria-stabilized zirconia with crystal water, and precipitate for 3 hours to obtain a hydrogel;

[0046] (3) Add a dispersant and an alkali-removing agent to the hydrogel prepared in the above steps, beat and filter, and the Zr(OH) after washing with deionized water 4 AgNO for hydrogel 3 Check until no Cl is detected - ; The dispersant adopts PEG4000, and the addition ...

Embodiment 2

[0055] A, the preparation of nanoscale ZrO2 powder

[0056] (1) Weigh 240 parts by weight of Zr(OH) 4 and 29 parts by weight of YCl 3 , added to deionized water to prepare an acidic solution with a concentration of 6%, heated to 65°C under stirring conditions, completely dissolved and mixed thoroughly;

[0057](2) Take 680 parts by weight of potassium hydroxide, add it into deionized water to prepare a 13% alkaline solution, add the acidic solution prepared in the above steps into the alkaline solution dropwise at a uniform speed, and adjust the pH value to 9.3, so that Co-precipitate the two salts to obtain yttria-stabilized zirconia with crystal water, and precipitate for 3 hours to obtain a hydrogel;

[0058] (3) Add a dispersant and an alkali-removing agent to the hydrogel prepared in the above steps, beat and filter, and the Zr(OH) after washing with deionized water 4 AgNO for hydrogel 3 Check until no Cl is detected - ; The dispersant adopts PEG4000, and the additio...

Embodiment 3

[0067] A, the preparation of nanoscale ZrO2 powder

[0068] (1) Weigh 250 parts by weight of Zr(OH) 4 and 27 parts by weight of YCl 3 , added to deionized water to prepare an acidic solution with a concentration of 6%, heated to 65°C under stirring conditions, completely dissolved and mixed thoroughly;

[0069] (2) Take 690 parts by weight of potassium hydroxide, add it to deionized water to prepare a 13% alkaline solution, add the acidic solution prepared in the above steps dropwise to the alkaline solution at a constant speed, and adjust the pH value to 9.5, so that Co-precipitate the two salts to obtain yttria-stabilized zirconia with crystal water, and precipitate for 3 hours to obtain a hydrogel;

[0070] (3) Add a dispersant and an alkali-removing agent to the hydrogel prepared in the above steps, beat and filter, and the Zr(OH) after washing with deionized water 4 AgNO for hydrogel 3 Check until no Cl is detected - ; The dispersant adopts PEG4000, and the addition ...

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 method for preparing a zirconium oxide thermal barrier coating by a spraying process, which comprises the following steps: preparing large-specific-area stable nano zirconium oxide powder by a green environment-friendly process; and on the basis of the prepared large-specific-area stable nano zirconium oxide powder, adding proper amounts of Lu2O3, In2O3, Al2O3 and TiO2 to prepare the ZrO2 thermal barrier coating. The prepared coating has the advantages of high stability and high corrosion resistance.

Description

technical field [0001] The invention belongs to the technical field of material science, and in particular relates to a method for preparing a zirconia thermal barrier coating by a spraying method. [0002] Background technique [0003] Thermal barrier coating (Thermal Barrier Coating) is a layer of ceramic coating, which is deposited on the surface of high temperature resistant metal or superalloy. Advanced devices (such as engine turbine blades) can operate at high temperatures, and can improve the thermal efficiency of devices (engines, etc.) to more than 60%. [0004] NASA (National Aeronautics and Space Administration) - Lewis Research Center in the United States proposed the concept of thermal barrier coating as early as the 1950s in order to improve the high temperature and corrosion resistance of gas turbine blades and rocket engines. After a long period of exploration in the material selection and preparation process of the coating, a major breakthrough was made i...

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): C23C4/10C04B35/48C04B35/624C23C4/11C23C4/134
CPCY02T50/60
Inventor 张关莲
Owner GUANGXI XUTENG INDUSTRIAL GROUP CO LTD
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