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

Treatment method for improving oxidation resistance of thermal barrier coating (TBC) bonding layer

A technology of thermal barrier coating and treatment method, which is applied in the direction of coating, metal material coating technology, fusion spraying, etc., and can solve the problem of uneven growth of thermally grown oxide layer, reduction of oxidation resistance of coating, and bonding layer surface Large roughness and other problems, to achieve the effect of uniform thermal growth oxide layer, high energy utilization rate, and improve high temperature service performance

Inactive Publication Date: 2012-10-10
DALIAN UNIV OF TECH
View PDF3 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The second is that the surface roughness of the bonding layer prepared by the plasma spraying method is relatively large, which makes the interface between the bonding layer and the ceramic layer uneven, and it is easy to make the growth of the thermally grown oxide layer uneven, which leads to the oxidation resistance of the coating. reduce

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
  • Treatment method for improving oxidation resistance of thermal barrier coating (TBC) bonding layer
  • Treatment method for improving oxidation resistance of thermal barrier coating (TBC) bonding layer
  • Treatment method for improving oxidation resistance of thermal barrier coating (TBC) bonding layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Combined with the specific experimental process, the implementation plan for improving the high-temperature oxidation resistance of the thermal barrier coating bonding layer by high-current pulsed electron beam irradiation is described in detail. Taking the same pulse width and different energy densities as an example, the specific steps are as follows:

[0027] The first step, preparation of thermal barrier coating tie layer (MCrAlY)

[0028] After the superalloy substrate (or parts such as engine blades) is pre-grinded, polished, and cleaned, the low-pressure plasma spraying method (LPPS) is used to deposit a bonding layer on the superalloy substrate. The coating material of the bonding layer is MCrAlY;

[0029] In the second step, the sample that has been sprayed with the thermal barrier coating bonding layer is fixed on the sample stage, and vacuumized

[0030] Fix the thermal barrier coating adhesive layer sample prepared by the plasma spraying method on the sample...

Embodiment 2

[0040] Combined with the specific experimental process, the implementation plan for improving the high-temperature oxidation resistance of the thermal barrier coating bonding layer by intense pulsed electron beam irradiation is described in detail. Taking the same energy density and different pulse widths as an example, the specific steps are as follows:

[0041] The first step, preparation of thermal barrier coating tie layer (MCrAlY)

[0042] After the superalloy substrate (or parts such as engine blades) is pre-grinded, polished, and cleaned, the low-pressure plasma spraying method (LPPS) is used to deposit a bonding layer on the superalloy substrate. The coating material of the bonding layer is MCrAlY;

[0043] The second step is to fix the sample with the thermal barrier coating bond layer deposited on the sample stage and vacuumize

[0044] Fix the thermal barrier coating adhesive layer sample prepared by the plasma spraying method on the sample stage of the high-current...

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 treatment method for improving the oxidation resistance of a thermal barrier coating (TBC) bonding layer, and belongs to the technical field of surface treatment and modification of the TBC bonding layer. In the material surface treatment and modification processes, the surface roughness of the TBC bonding layer (MCrAlY) prepared by a plasma spraying method is reduced through high current pulsed electron beam irradiation, and the pores and holes of a coating are reduced, so that the high-temperature oxidation resistance of the TBC bonding layer is improved. Technical conditions are that vacuum degree is 3.5*10<-2>Pa, voltage is 15kV, frequency is 1Hz, pulse width is 50 to 200mu s, energy density is 8 to 18J / cm<2>, and pulse times is 10 to 20. The method has the advantages that the surface roughness of the TBC bonding layer (MCrAlY) prepared by the plasma spraying method is reduced through high current pulsed electron beam irradiation, the pores and holes of the coating are reduced, and penetrated microcracks are avoided, so that the high-temperature oxidation resistance of the TBC bonding layer is effectively improved.

Description

technical field [0001] The invention relates to a treatment method for improving the oxidation resistance of the bonding layer of a thermal barrier coating, that is, the high-current pulsed electron beam irradiation realizes the remelting of the surface of the bonding layer of the thermal barrier coating prepared by the plasma spraying method, and the coating surface is smooth , the loose pores disappear and the roughness is reduced, thereby improving the oxidation resistance of the bonding layer of the thermal barrier coating, belonging to the technical field of surface treatment and modification of the bonding layer of the thermal barrier coating. Background technique [0002] With the development of aerospace technology, the service temperature of hot end parts such as engine turbine blades is getting higher and higher, which puts forward higher requirements for the high temperature resistance of the superalloy used to prepare the blades. One of the methods to solve the pr...

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): C23C4/18C23C24/10
Inventor 梅显秀刘越马腾才
Owner DALIAN UNIV OF TECH
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