A novel metal-ceramic composite combining the structures of nacre and nanofiber reinforced foam  

作　　者：Guodong Shi Zhanjun Wu Hengli Wang 

机构地区：[1]State Key Laboratory of Structural Analysis for Industrial Equipment,Dalian University of Technology,Dalian 116024,China [2]Key Laboratory of Advanced Technology for Aerospace Vehicles,Liaoning Province,Dalian University of Technology,Dalian 116024,China

出　　处：《Journal of Materials Science & Technology》2023年第26期189-199,共11页材料科学技术（英文版）

基　　金：financially supported by the National Key R&D Program of China(No.2018YFA0702800);the National Natural Sci-ence Foundation of China(No.51002019);the Fundamental Re-search Funds for the Central Universities(Nos.DUT21GF309 and DUT22LAB114).

摘　　要：Lightweight high-strength and tough composites have enormous potentials in a multitude of fields in-cluding biomaterials,sporting goods,aerospace and automobile industries.Herein,we present a strat-egy to develop a novel bulk Al/SiC composite with a nacre/foam hybrid structure to combine excellent lightweight of foams with outstanding strength and toughness of nacre.To reduce the adverse effect of foam pores on mechanical properties,we further propose to strengthen the foams with 3D nanofiber networks,obtaining a nacre/nanofiber reinforced foam structure.Simultaneously,new particle-bubble co-assembly and selective infiltration technologies are proposed to prepare the novel nacre/foam and nacre/nanofiber reinforced foam structures.The nacre/nanofiber reinforced foam composite shows greater specific strength and toughness than the nacre/foam composite,conventional dense Al/SiC composites and many engineering materials.Our approach opens a promising new avenue for the structure design and manufacturing of lightweight,high-performance structural materials.

关 键 词：Nanofiber reinforced foams Nacre-mimetic Microstructure Mechanical properties Freeze-casting Metal-ceramic composites 

分 类 号：TB333[一般工业技术—材料科学与工程]