Diffusion-resistant high-entropy alloy coating material, high-temperature-resistant coating material as well as 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 chemical matching, thermal shock failure, poor blocking effect, etc.
CN112064024AActive Publication Date: 2020-12-11GUANGDONG INST OF NEW MATERIALS
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
GUANGDONG INST OF NEW MATERIALS
Publication Date
2020-12-11

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Abstract

The invention discloses a diffusion-resistant high-entropy alloy coating material, a high-temperature-resistant coating material as well as a preparation method and application thereof, and relates tothe technical field of coating preparation. The diffusion-resistant high-entropy alloy coating material comprises a base material and a diffusion-resistant high-entropy alloy coating, wherein elements of the diffusion-resistant high-entropy alloy coating comprise Al, Co, Cr, Ni and Mo. According to the high-temperature-resistant coating material and the preparation method thereof, the diffusion-resistant high-entropy alloy coating is formed on the base material and then serves as a material body to form a high-temperature-resistant coating, the specific slow diffusion effect of the diffusion-resistant high-entropy alloy coating is utilized, and the diffusion-resistant high-entropy alloy coating has good physical and chemical matching performance with the base material and the high-temperature-resistant coating; and mutual diffusion of alloy components between the base material and the coating and precipitation of interface harmful phases can be effectively inhibited, and the high-temperature oxidation resistance of the coating is improved. The high-temperature-resistant coating material can be applied to preparation of hot-end parts of aero-engines or gas turbines, the service life of the parts is prolonged, and the working reliability of the parts is improved.
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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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