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

Method for increasing combination strength of plasma spraying ceramic coat and substrate

A technology of ceramic coating and bonding strength, which is applied in coating, metal material coating process, fusion spraying, etc., and can solve the problems of reducing the service life of the coating, the effect is small, and the bonding strength of the coating and the substrate is low.

Inactive Publication Date: 2008-07-09
HOHAI UNIV
View PDF0 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bonding strength between the coating and the substrate is low, generally about 30MPa, which reduces the service life of the coating and limits the application range of the coating
Therefore, people have been working on improving the bonding strength between the coating and the substrate, but with little success.

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 increasing combination strength of plasma spraying ceramic coat and substrate
  • Method for increasing combination strength of plasma spraying ceramic coat and substrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Spray the NiCrAl bottom layer on the surface of the carbon steel substrate by plasma spraying method, and then use Cr 2 o 3 -8%TiO 2 Spraying the ceramic coating of the working layer;

[0029] (2) Put the above-mentioned sprayed carbon steel substrate into a furnace at 400° C. for 8 hours, and then cool with the furnace.

Embodiment 2

[0031] (1) Spray the NiCr bottom layer on the surface of the carbon steel substrate by plasma spraying method, and then use Al 2 o 3 -13%TiO 2 Spraying the ceramic coating of the working layer;

[0032] (2) Put the above-mentioned sprayed carbon steel substrate into a furnace at 450° C. for 6 hours, and then cool with the furnace.

Embodiment 3

[0034] (1) Spray the NiCrAl bottom layer on the surface of the carbon steel substrate by plasma spraying method, and then use ZrO 2 -8%Y 2 o 3 Spraying the ceramic coating of the working layer;

[0035] (2) Put the above-mentioned sprayed carbon steel substrate into a furnace at 450° C. for 4 hours, and then cool with the furnace.

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 discloses a method for improving plasma sprayed ceramic coatings and base binding strength, which is sprayed ceramic coating fusion processing method. The method is that sceramic coatings which are prepared by plasma spraying are put in special environment which is 300-550 DEG C for 4-8 hours and then is cooled along with a stove. The coatings and a workpiece base are mutually diffused or are formed into a new phase, thereby playing a role of a transition layer between the coatings and the base. The bonding strength of the coatings and the base are improved by about 20 percent and is capable of meeting the application requirements for industries.

Description

1. Technical field [0001] The invention mainly relates to the field of steel surface coatings commonly used in industry, in particular to a method for improving the bonding strength of the steel surface and the plasma sprayed ceramic coating. 2. Background technology [0002] In recent years, plasma spraying technology has been widely used in various fields due to its excellent corrosion resistance and wear resistance. stress. The bonding strength between the coating and the substrate is low, generally about 30MPa, which reduces the service life of the coating and limits the application range of the coating. Therefore, people have been working on improving the bonding strength of coatings and substrates, but with little success. At present, the commonly used methods to improve the bonding strength between the coating and the substrate are: [0003] (1) Workpiece pretreatment includes different degrees of roughening treatment and preheating treatment on the surface 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): C23C4/08C23C4/10C23C4/18C23C4/073C23C4/11C23C4/134
Inventor 王泽华张晶晶林萍华吴玉萍
Owner HOHAI UNIV
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