Unlock instant, AI-driven research and patent intelligence for your innovation.

MCrAlYX bonding layer and thermal barrier coating with enhanced double-interface performance and preparation method of MCrAlYX bonding layer and thermal barrier coating

A technology of thermal barrier coating and bonding layer, applied in the direction of coating, metal material coating process, melt spraying, etc., can solve the problem of ignoring the interdiffusion performance of coating and substrate, the bonding of ceramic surface layer, and the reduction of beneficial element content. , the decline of mechanical properties of the substrate, etc., to achieve the effect of performance optimization, enhanced bonding force, and not easy to peel off

Active Publication Date: 2022-04-01
BEIJING MINING & METALLURGICAL TECH GRP CO LTD +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]However, most McrAlY material designs only focus on the anti-oxidation and anti-corrosion effect, while ignoring the interdiffusion performance between the coating and the substrate and the bonding layer with the ceramic surface layer. Combination
However, in a long-term high-temperature environment, the elements in the coating and the substrate will diffuse each other, which will easily cause the mechanical properties of the substrate to decrease, and the content of beneficial elements in the coating will decrease. It is necessary to provide a new dual-interface performance enhancement. MCrAlYX bonding layer

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
  • MCrAlYX bonding layer and thermal barrier coating with enhanced double-interface performance and preparation method of MCrAlYX bonding layer and thermal barrier coating
  • MCrAlYX bonding layer and thermal barrier coating with enhanced double-interface performance and preparation method of MCrAlYX bonding layer and thermal barrier coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A method for preparing a thermal barrier coating, comprising the steps of:

[0052] Substrate pretreatment: Rene N5 nickel-based single crystal superalloy is selected as the substrate, and the substrate is pretreated. The pretreatment includes sandblasting, cleaning and drying the surface of the substrate;

[0053] High-density layer spraying, using supersonic flame spraying method to deposit MCrAlYX powder material on the surface of the substrate to obtain a high-density layer with a thickness of 50 μm and a roughness Ra of 5.5 μm. The substrate is preheated before spraying. The preheating temperature is 150°C;

[0054] High-roughness layer spraying: MCrAlYX powder material is deposited on the surface of the high-density layer by atmospheric plasma spraying method to obtain a high-roughness layer with a thickness of 350 μm and a roughness Ra of 7.5 μm. The parameters of the atmospheric plasma spraying method in this step are: argon The air flow rate is 35L / min, the hy...

Embodiment 2

[0065] A method for preparing a thermal barrier coating, comprising the steps of:

[0066] Substrate pretreatment: select RENE N5 nickel-based single crystal superalloy as the substrate, and pretreat the substrate. The pretreatment includes sandblasting, cleaning and drying the surface of the substrate;

[0067] High-density layer spraying, using supersonic flame spraying method to deposit MCrAlYX powder material on the surface of the substrate to obtain a high-density layer with a thickness of 100 μm and a roughness Ra of 6 μm. The substrate is preheated before spraying, and the preheating temperature is 500 ℃;

[0068] High-roughness layer spraying: MCrAlYX powder material is deposited on the surface of the high-density layer by atmospheric plasma spraying method to obtain a high-roughness layer with a thickness of 150 μm and a roughness Ra of 10.5 μm. The parameters of the atmospheric plasma spraying method in this step are: argon The air flow rate is 50 L / min, the hydroge...

Embodiment 3

[0079] A method for preparing a thermal barrier coating, comprising the steps of:

[0080] Substrate pretreatment: select RENE N5 nickel-based single crystal superalloy as the substrate, and pretreat the substrate. The pretreatment includes sandblasting, cleaning and drying the surface of the substrate;

[0081] High-density layer spraying, using supersonic flame spraying method to deposit MCrAlYX powder material on the surface of the substrate to obtain a high-density layer with a thickness of 200 μm and a roughness Ra of 7.5 μm. The substrate is preheated before spraying. The preheating temperature is 800°C;

[0082] High-roughness layer spraying: MCrAlYX powder material is deposited on the surface of the high-density layer by atmospheric plasma spraying method to obtain a high-roughness layer with a thickness of 90 μm and a roughness Ra of 14.5 μm. The parameters of the atmospheric plasma spraying method in this step are: argon The air flow rate is 65 L / min, the hydrogen f...

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

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Roughnessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of coating protection, and particularly discloses a double-interface performance reinforced MCrAlYX bonding layer, a thermal barrier coating and a preparation method of the double-interface performance reinforced MCrAlYX bonding layer and the thermal barrier coating. According to the bonding layer, a diffusion resistance area containing a large number of densely-arranged secondary beta in-situ precipitated phases is generated in situ at the interface between the base material and the high-compactness layer of the bonding layer, and X is one or more of Hf, Si, Ta, Re and W. The thermal barrier coating comprises an MCrAlYX bonding layer sprayed on a base material and a ceramic surface layer sprayed on a high-roughness layer of the MCrAlYX bonding layer. The preparation method of the thermal barrier coating comprises the following steps that the base material is pretreated; spraying a high-density layer; spraying a high-roughness layer; spraying a ceramic surface layer; performing vacuum primary aging treatment; and performing atmospheric secondary aging heat treatment. The method has the advantages that diffusion resistance between the bonding layer and the base material can be achieved, and high bonding performance between the bonding layer and the ceramic layer can be achieved.

Description

technical field [0001] The application relates to the technical field of coating protection, more specifically, it relates to a MCrAlYX bonding layer and a thermal barrier coating with double-interface performance strengthening and a preparation method thereof. Background technique [0002] In recent years, MCrAlY (M=Co, Ni or Co+Ni) coatings have been widely used in high-temperature oxidation-resistant protective coatings and bonding layers between substrates and ceramic layers in thermal barrier coatings. M represents the matrix element, usually Ni and Co. In order to further improve the performance of the coating, other elements will be added to the coating, represented by X, to form MCrAlYX multi-element alloy material. [0003] However, most McrAlY material designs only focus on the anti-oxidation and anti-corrosion effect, while ignoring the interdiffusion performance between the coating and the substrate and the combination with the ceramic surface layer when used as ...

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): C23C4/073C23C4/134C23C4/129C23C4/18C22C19/05C22C30/00C23C4/10
Inventor 张鑫郑兆然杜开平原慷彭浩然皮自强陈星
Owner BEIJING MINING & METALLURGICAL TECH GRP CO LTD