凯发

Speaker-Gaohui Wu

Gaohui Wu
Harbin Institute of Technology, China
Wu Gaohui received a doctor degree in Engineering from the Nagaoka University of Technology in Japan. He is currently Director in National and Local Joint Laboratory of Metal Matrix Composites. He is also a Doctoral Supervisor and Professor at School of Materials Science and Engineering in Harbin Institute of Technology. He also enjoys special allowance from the State Council. 
He has been conducting research on metal matrix composites (MMCs) since 1981 and built the Institute of Metal Matrix Composites and Engineering. His team has mastered the high quality and low cost fabrication technology of MMCs, several property design theories and interface adjustment key technologies of MMCs, to meet the requirements of national demands. He invented more than 20 types of new MMCs, 8 of which has been applied in a dozen national defense equipment, including the authentic dissipation heat shielding and non-ablating materials, instrument-grade and optical-grade SiC/Al composites with proprietary intellectual property rights, high specific stiffness Cf/Al composites and the corresponding forming technique, high specific strength Cf/Mg composites, self-lubricating TiB2/Al composites, diamond/Al composites with super high thermal conductivity, and electronic packaging composites. The application of these composites solved several key issues relating with the upgrade of equipment. He has won National Award for Technological Invention 2nd Prize, National Science and Technology Progress Special Prize, National Defense Science and Technology Progress 1st, 2nd and 3rd Prize. He is authorized 73 national invention patents. And the number of SCI indexed papers in terms of MMCs he published in recent ten years is more than 280.
Title:Development and prospect of Graphene/Al composites
SymposiumMetal Composites
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Ending Time
Abstract

In the present work, 1.8wt.% graphene reinforced 6063Al composites have been prepared by the vacuum-high pressure infiltration patented method, and the multi-layer graphene in Al matrix has been transformed to few and mono-layered graphene through plastic deformation. It has been found that the graphene with 4 to 5 layers could lead to the significant improvement to the mechanical and thermal conductivity of composites. The yield strength has been improved more than 450% with comparable plasticity to Al matrix. Moreover, the thermal conductivity of few-layered composites has been improved about 200% rather than the multi-layered composites. It indicates that the critical performance of Al composites could be over-all improved, which might breakthrough the limitation of metal materials and be the subversive composites. Furthermore, based on shear-ag model, the strengthening mechanism of graphene reinforced Al matrix composites has been discussed, and the research and application of their application has been prospected.

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Abstract: Minyang Lu

Sponsor: Wenyang Yang

Media: Liping Wang

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