Diffusion-resistant high-entropy alloy coating material, high-temperature-resistant coating material, preparation method and application thereof

A high-entropy alloy and coating material technology, applied in metal material coating process, coating, superimposed layer plating and other directions, can solve the problems of poor physical matching of substrates, poor blocking effect, poor chemical matching and so on , to extend the service life, improve the resistance to diffusion, and improve the resistance to high temperature oxidation.
CN112064024BActive Publication Date: 2021-08-31GUANGDONG INST OF NEW MATERIALS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GUANGDONG INST OF NEW MATERIALS
Publication Date
2021-08-31

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Abstract

The invention discloses a diffusion-resistant high-entropy alloy coating material, a high-temperature-resistant coating material, a preparation method and an application thereof, and relates to the technical field of coating preparation. The diffusion-resistant high-entropy alloy coating material includes a base material and a diffusion-resistant high-entropy alloy coating, and the elements of the diffusion-resistant high-entropy alloy coating include Al, Co, Cr, Ni and Mo. The high-temperature-resistant coating material and its preparation method form the above-mentioned diffusion-resistant high-entropy alloy coating on the substrate, and then use this as the material body to form a high-temperature-resistant coating, and utilize the unique slow diffusion effect of the diffusion-resistant high-entropy alloy coating. And it has good physical and chemical matching with the substrate and the high-temperature resistant coating, which can effectively inhibit the interdiffusion of alloy components between the substrate and the coating and the precipitation of harmful phases at the interface, and improve the high-temperature oxidation resistance of the coating. The high-temperature-resistant coating material can be applied in the preparation of hot-end parts of aero-engines or gas turbines, thereby improving the service life and working reliability of the parts.
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Description

technical field

[0001] The invention relates to the technical field of coating preparation, and in particular to a diffusion-resistant high-entropy alloy coating material, a high-temperature-resistant coating material and a preparation method and application thereof. Background technique

[0002] Aeroengine or gas turbine turbine blades are used in harsh environments, and their operating temperature is extremely high, which has far exceeded the limit temperature that superalloy materials can withstand. Therefore, high-temperature protective coatings must be used to meet the operating temperature and effectively extend the service life of components. However, due to the large difference in microstructure between the coating material and the superalloy substrate, interdiffusion of elements between the coating and the alloy substrate will inevitably occur during high temperature service. Among them, the main anti-oxidation element Al of the coating diffuses into the substrate, ...

Claims

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