A diamond / aluminum composite material with a nano-gradient interface and a preparation method thereof
By plating metal targets on the surface of diamond particles to form a nanogradient multi-carbide interface layer, combined with magnetron sputtering and carburizing, the problem of insufficient interface bonding density of diamond/aluminum composite materials in the prior art is solved, and a composite material preparation with high thermal conductivity and high strength is achieved.
CN118726926BActive Publication Date: 2025-07-25NANJING REALWAY NEW MATERIAL TECHNOLOGY CO LTD
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Patent Information
- Application Number
- CN202410890242.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-04
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2044-07-04
AI Technical Summary
Technical Problem
The prior art is difficult to prepare diamond/aluminum composite materials with tight interface bonding while ensuring high thermal conductivity.
Method used
By plating metal targets on the surface of diamond particles to form a nanogradient multi-carbide interface layer, and combining magnetron sputtering and carburizing methods, diamond/aluminum composite materials with nanogradient interface were prepared.
Benefits of technology
The thermal conductivity and interface bonding density of diamond/aluminum composite materials are improved, the thermal resistance of interface is reduced, the degree of interface diffusion reaction is enhanced, and the high thermal conductivity of diamond particles is fully utilized.
✦ Generated by Eureka AI based on patent content.
Abstract
The present invention relates to the technical field of composite materials, and solves the technical problem that it is difficult to prepare a diamond / aluminum composite material with a tightly bonded interface while ensuring high thermal conductivity in the prior art. In particular, it relates to a diamond / aluminum composite material with a nano-gradient interface and a preparation method thereof. The present invention introduces a carburizing method on the basis of the magnetron sputtering method, and realizes the in-situ generation of new phases in each modified layer from the outermost metal element layer to the diamond surface through adsorption and diffusion, promotes the transformation of the metal modified elements on the diamond particle surface into carbides, and constructs a nano-gradient interface carbide layer. While the nano-scale interface layer improves the interface bonding between diamond and aluminum, it minimizes the introduced interface thermal resistance to the greatest extent. The present invention combines magnetron sputtering deposition with the carburizing method to prepare a nano-gradient multi-carbide interface layer with precisely controllable thickness, enhances the degree of interfacial diffusion reaction between diamond and aluminum, weakens the interfacial phonon scattering, and can give full play to the high thermal conductivity of diamond particles more fully.
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