A high-entropy composite ceramic reinforced copper-based composite material, a preparation method and application thereof

CN122378088APending Publication Date: 2026-07-14XI AN JIAOTONG UNIV
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Patent Information

Application Number
CN202610429673.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-02
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing copper-based bearing materials have difficulty establishing an oil film under low-speed, heavy-load, start-stop, and load fluctuation conditions, leading to fluctuations in the friction coefficient, increased adhesive wear and three-body abrasive wear, and insufficient resistance to scratching and seizing.

Method used

A high-entropy composite ceramic powder preparation method was adopted. MoAlB ceramic powder was attached to the surface of FeCoCrNiMn alloy powder to form a core-shell structured composite precursor powder. The precursor powder was then subjected to spheroidization and rounding treatment to form a densified reforming layer. Subsequently, a metal cladding layer was set on the outer layer to prepare a high-entropy composite ceramic reinforced copper-based composite material.

Benefits of technology

It significantly improves the frictional stability, wear resistance and anti-galling ability of the material under low-speed heavy-load conditions, reduces wear dispersion and the risk of plowing of the mating journal, and ensures the long-term stable operation of the material under low-speed heavy-load conditions.

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Abstract

The application discloses a kind of high-entropy composite ceramic reinforced copper-based composite material and its preparation method and application, belong to ship sliding bearing bearing material technical field.The composite material is with Cu-Sn-Ni alloy as matrix, add FeCoCrNiMn-MoAlB high-entropy composite ceramic powder as reinforcing phase, the composite powder is made by surface complex, plasma spheroidization and optional metal coating treatment, with core-shell structure, high sphericity and good interface compatibility.Its preparation method includes composite powder preparation, raw material mixing, pressing forming, sintering and optional post-processing steps.The application is by the engineering design of reinforcing phase structure and morphology, so that the composite material can effectively reduce the friction coefficient fluctuation under low-speed heavy load working condition, inhibit the development of wear, improve the anti-scratch and anti-bite capacity, while maintaining the original thermal conductivity and bearing performance of matrix, suitable for ship bearing sliding bearing and other low-speed heavy load friction components, with wide industrial application prospect.
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