Mechanical Robust Nacre‐Mimetic Composites with Designable Cryptic Coloration and Electromagnetic Wave‐Transparent Performance
Abstract
AbstractCeramic materials are widely used in various protective equipment owing to their excellent mechanical properties and chemical stability, while their applications are limited by monotonous color and poor toughness. Inspired by the colorful and tough natural shells, nacre‐mimetic alumina (Al2O3)‐based (NMA) composites are fabricated by proposing a dual‐oxide interface design strategy inspired by the hierarchical structure of natural nacre. The NMA composites achieve color regulation, providing possibilities for their application in camouflage protective armor. The fracture toughness of the optimal NMA composite is more than three times that of commercial Al2O3 ceramic. Simultaneously, the NMA composites have obvious advantages in terms of impact resistance compared with Al2O3 ceramic and polymer polymethyl methacrylate (PMMA). Additionally, the hierarchical structure of the NMA composites provides favorable structural conditions for transmission of electromagnetic (EM) waves at the frequency band of 18–26.5 GHz. These characteristics make the NMA composites potential protective materials for radar and communication equipment.
Article Details
Authors (8)
Jun Pang
Department of Urology, Kidney and Urology Center, The Seventh Affiliated Hospital, Sun Yat-sen University
Zhen‐Bang Zhang
Institute of Innovative Materials Department of Chemistry Department of Materials Science and Engineering Shenzhen Key Laboratory of Sustainable Biomimetic Materials Guangming Advanced Research Institute Southern University of Science and Technology Shenzhen 518055 China
Ze‐Yu Wang
Tianjin Key Laboratory of Advanced Functional Porous Materials Institute for New Energy Materials and Low‐Carbon Technologies, School of Materials Science and Engineering Tianjin University of Technology Tianjin 300384 P. R. China
Si‐Chao Zhang
New Cornerstone Science Laboratory Department of Chemistry Institute of Biomimetic Materials & Chemistry Anhui Engineering Laboratory of Biomimetic Materials Division of Nanomaterials & Chemistry Hefei National Research Center for Physical Sciences at the Microscale University of Science and Technology of China Hefei 230026 China
Shao‐Meng Wen
New Cornerstone Science Laboratory Department of Chemistry Institute of Biomimetic Materials & Chemistry Anhui Engineering Laboratory of Biomimetic Materials Division of Nanomaterials & Chemistry Hefei National Research Center for Physical Sciences at the Microscale University of Science and Technology of China Hefei 230026 China
Chen Cui
Huai‐Ling Gao
CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Modern Mechanics University of Science and Technology of China Hefei Anhui 230027 China
Shu‐Hong Yu
New Cornerstone Science Laboratory Department of Chemistry Institute of Biomimetic Materials and Chemistry Anhui Engineering Laboratory of Biomimetic Materials Division of Nanomaterials and Chemistry Hefei National Research Center for Physical Sciences at the Microscale University of Science and Technology of China Hefei 230026 China