A method for producing a fecraly coating

The FeCrAlY coating prepared by plasma glow discharge assisted cleaning, arc ion plating, high-energy pulsed magnetron sputtering, and gradient coating method solves the problems of high porosity and low adhesion, and achieves stability and self-healing performance under high temperature environment, meeting the application requirements of high-temperature equipment.

CN119800295BActive Publication Date: 2026-07-14CHINA NATIONAL NUCLEAR CORP SOUTHERN TECHNOLOGY CO LTD +2
View PDF 1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA NATIONAL NUCLEAR CORP SOUTHERN TECHNOLOGY CO LTD
Filing Date
2024-12-27
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing FeCrAlY coatings have high porosity, low film-substrate adhesion, poor high-temperature corrosion resistance, and insufficient self-healing ability, which makes the coatings prone to peeling and failure, and cannot meet the requirements for long-term service in high-temperature environments.

Method used

The substrate was activated by plasma glow discharge-assisted cleaning technology, combined with arc ion plating and bias-assisted attraction of Al ions to bombard the substrate, and a dense FeCrAlY coating was prepared by high-energy pulse magnetron sputtering technology and gradient coating method. Self-healing was achieved by pre-embedding Al elements in the substrate, thereby improving the adhesion between the film and the substrate and the corrosion resistance.

Benefits of technology

The prepared FeCrAlY coating has high density, excellent film-substrate adhesion, high temperature resistance and corrosion resistance. It can maintain stability under cyclic thermal stress, has self-healing ability, and extends service life.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure HDA0005214783510000011
    Figure HDA0005214783510000011
  • Figure HDA0005214783510000021
    Figure HDA0005214783510000021
  • Figure HDA0005214783510000031
    Figure HDA0005214783510000031
Patent Text Reader

Abstract

The application relates to the technical field of material surface treatment, and discloses a preparation method of a FeCrAlY coating. The preparation method of the FeCrAlY coating comprises the following steps: S1, performing plasma glow assisted cleaning on a substrate in a magnetron sputtering device provided with a FeCrAlY magnetron target, an Al arc target and the substrate, so as to obtain an activated substrate; S2, performing arc ion plating and bias assisted attraction Al ion bombardment injection on the activated substrate, so as to obtain an Al-rich substrate; and S3, performing gradient sputtering film coating on the surface of the Al-rich substrate by using a high-energy pulse and direct-current composite magnetron sputtering method, and performing annealing, so as to obtain the FeCrAlY coating. The preparation method of the FeCrAlY coating provided by the application has the advantages that the prepared FeCrAlY coating has strong film-substrate adhesion, high-temperature resistance, corrosion resistance, excellent oxidation resistance and self-repairing performance.
Need to check novelty before this filing date? Find Prior Art