Low-burning-loss abrasive coating material and application thereof

A technology of coating materials and wear, applied in the direction of coating, metal material coating process, molten spraying, etc., can solve the problems of inability to exert superior characteristics, low deposition rate of thermal spraying, poor adhesion, etc., to reduce loss, Effect of increasing component content and easy deposition
CN110872677AActive Publication Date: 2020-03-10BEIJING MINING & METALLURGICAL TECH GRP CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING MINING & METALLURGICAL TECH GRP CO LTD
Publication Date
2020-03-10

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Abstract

The invention belongs to the technical field of coating materials, and particularly relates to a low-burning-loss abrasive coating material and an application thereof. The low-burning-loss abrasive coating material provided by the invention comprises an abrasive component and a framework component, wherein the abrasive component comprises hexagonal boron nitride, the graphitization index of the hexagonal boron nitride is 0.7-2.0, and the pattern of the hexagonal boron nitride is lamellar. The hexagonal boron nitride having specific graphitization indexes and specific pattern is selected as theabrasive component, so that the loss of a boron nitride system abrasive coating material in the hot spraying process can be effectively reduced, the content of boron nitride components in the coatingcan be increased, the abradability of the coating can be improved, and the low-burning-loss abrasive coating material has great application prospects in aircraft engines and combustion turbines.
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Description

technical field

[0001] The invention belongs to the technical field of coating materials, in particular to a low-burning wearable coating material and its application. Background technique

[0002] The abradable sealing coating is coated on the surface of the stator part of the aero-engine, and it can be actively worn when it is rubbed against the rotor part under high temperature and high speed conditions, so that the minimum gap between the rotor and the stator can be realized through the interference fit of the rotor and the stator At the same time, it protects the rotor components from wear, which is of great significance for reducing the fuel consumption of gas turbines, improving efficiency and operating safety. The abradable sealing coating is composed of an abradable component and a skeleton component. The abradable component is generally a low-shear strength non-metallic material such as graphite, hexagonal boron nitride, polyphenylene, etc., providing the abradable...

Claims

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