Graphene reinforced aluminum matrix composite with high electrical conductivity and preparation method thereof

US11739424B2 · kind B2 · utility

Assignee

• WUHAN RESEARCH INSTITUTE OF MATERIALS PROTECTION · CN

Inventors

• Haitao Duan · 红钢城街道, CN
• Yinhua Li · Shangrao, CN
• Jiesong Tu · Hubei, CN
• Jian Li · Hubei, CN
• Xingeng Li · Shandong, CN
• Zhibin Fan · Shandong, CN
• Dan Jia · 红钢城街道, CN
• Shengpeng Zhan · 红钢城街道, CN
• Tian Yang · 红钢城街道, CN
• Yunhu Ding · 红钢城街道, CN
• Lixin Ma · 红钢城街道, CN

Key dates

• Filing date: Jun 17, 2022
• Grant date: Aug 29, 2023
• Expiry date: Jun 17, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C23C18/52
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A graphene reinforced aluminum matrix composite with high electrical conductivity and a preparation method thereof. The method includes: obtaining aluminum coated graphene powder by plating aluminum on a graphene surface, melting aluminum block into aluminum liquid, heating a mold to be lower than an aluminum melting point, alternately pouring the aluminum liquid and the aluminum coated graphene powder into the mold for layered casting to obtain a sandwich structure; extruding the sandwich structure into a rectangular test block and then heating to 500˜600° C., performing heat preservation for a preset time and performing forging treatment, and performing longitudinal cold deformation under inert gas to obtain the graphene reinforced aluminum matrix composite. The method can solve a problem that poor wettability of graphene and aluminum matrix, the graphene is evenly dispersed in the aluminum matrix, which can improve strength of the aluminum matrix and keep its high electrical conductivity.