一种取向排列石墨增强铜基复合材料及其制备方法

By preparing strongly magnetic graphite/Fe3O4 composite particles through ball milling and arranging them in a magnetic field, combined with spark plasma sintering, the problem of graphite orientation in copper-based composite materials was solved, improving the thermal conductivity and mechanical properties of the material. This method is suitable for aerospace, military products, automotive, and 3C fields.

CN117660797BActive Publication Date: 2026-07-17NANCHANG UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANCHANG UNIV
Filing Date
2023-11-13
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies make it difficult to achieve efficient and stable orientation of graphite in copper-based composite materials, resulting in poor thermal conductivity and mechanical properties of the materials, as well as complex and costly preparation methods.

Method used

Strongly magnetic graphite/Fe3O4 composite particles were prepared by ball milling and oriented in a copper matrix under the action of a magnetic field. The oriented graphite-reinforced copper matrix composite material was then prepared by spark plasma sintering.

Benefits of technology

The process achieves uniform directional arrangement of graphite in copper-based composite materials, significantly improving the thermal conductivity and mechanical properties of the materials, broadening their application range, and is simple, low-cost, and suitable for large-scale industrial production.

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Abstract

本发明公开了一种取向排列石墨增强铜基复合材料及其制备方法,属于金属基复合材料制备技术领域。本发明将高铁酸钾与石墨混合球磨,随后将产物分离、洗涤、干燥,最后在氮气氛围中高温退火得到具有较强磁性的石墨 / Fe3O4颗粒;将石墨 / Fe3O4颗粒与铜金属颗粒按一定比例混合均匀后松装在模具中,并将该模具放入磁场中,沿着平行于磁场方向缓慢旋转一定时间后,将混合粉末在磁场中进行原位压实;去除磁场后将模具置于真空烧结炉中进行放电等离子烧结,得到石墨 / 铜复合材料。本发明制备方法简单可控,经济有效,可重复性好,安全无污染,获得的石墨增强铜基复合材料性能优异,拓宽了石墨增强铜基复合材料的应用范围。
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