Titanium Dioxide Coated Graphene Prepared by Pressure Sintering as Reinforcement in Aluminum Matrix Composites [压力烧结制备二氧化钛包覆的石墨烯增强铝基复合材料]

作者：Wu Q.; Guo Z.^*; Li N.; Jiang L.; He W.

来源：Rare Metal Materials and Engineering, 2021, 50(9): 3068-3075.

• 7075Al alloy
• Composite
• Graphene nanoplatelets
• TiO2 coating

Graphene nanoplatelets (GNPs) reinforced 7075Al nanocomposites were synthesized by pressure sintering method. A novel method for optimizing interfacial bonding through TiO2 coated GNPs was proposed. The effects of TiO2 coated GNPs on mechanical properties and microstructure of the aluminum matrix nanocomposites were investigated. Results show that the mechanical properties of the nanocomposites are improved by addition of TiO2 coated GNPs, compared with those of nanocomposites with pure GNPs. The yield strength, ultimate tensile strength, and microhardness of the nanocomposites reinforced by TiO2 coated GNPs are increased by 38.9%, 34.4%, and 20.1%, respectively, compared with those of the matrix. The improvement of the mechanical properties is attributed to the coating layer, which optimizes the interface bonding between the reinforcement and the matrix, thereby improving the efficiency of load transfer.

• 单位
  南昌航空大学