Temperature-resistant and wear-resistant dual-phase high-entropy ceramic particle coating and preparation method thereof

By applying a temperature- and wear-resistant dual-phase high-entropy ceramic particle coating to the surface of medical metal implants, and utilizing high-entropy solid solutions and micro/nano hierarchical porous structures, the structural instability and loss of biochemical elements of the ceramic coating under temperature- and temperature-dependent conditions are solved, thus achieving long-term release of the coating's wear resistance and biochemical functions.

CN122358112APending Publication Date: 2026-07-10湖南省特种设备检验检测研究院 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-11
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

The existing ceramic coatings on the surface of medical metal implants suffer from structural instability under temperature change conditions and difficulty in long-term preservation of biochemical functional elements. In particular, microcracks and peeling occur inside the coating under alternating hot and cold conditions, and biochemical elements are lost uncontrollably.

Method used

A temperature- and wear-resistant dual-phase high-entropy ceramic particle coating is adopted. Through a dual-phase high-entropy solid solution formed by transition metal main elements, osteogenic elements, and broad-spectrum antibacterial elements with carbon and nitrogen elements, combined with a micro-nano hierarchical porous structure and an interfacial transition layer, a stable lattice structure and a slow-release mechanism of biochemical functional elements are constructed.

Benefits of technology

The coating achieves structural stability and long-term retention of biochemical functional elements under temperature change conditions, promotes bone repair and antibacterial effects, and improves the wear resistance and sustained release effect of biochemical elements.

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Abstract

This invention relates to the field of surface engineering technology, and discloses a temperature-sensitive and wear-resistant dual-phase high-entropy ceramic particle coating and its preparation method. The coating consists of transition metal main components, osteogenic active elements, broad-spectrum antibacterial elements, carbon elements, and nitrogen elements, forming a dual-phase high-entropy solid solution containing a carbide main phase and a nitride secondary phase. During preparation, the powders are mixed and ball-milled, then deposited under vacuum plasma spraying. The chamber pressure is adjusted to suppress the volatilization of biochemical elements, allowing them to dissolve in the crystal lattice. This coating utilizes the stress field of the dual-phase structure to anchor the biochemical functional elements, suppressing temperature-sensitive stress cracking and element loss, achieving structural stability and long-term synergistic effects of osteogenic and antibacterial properties.
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