Metamaterials made from Ni-based amorphous alloy micro-nanolattices with high mechanical and electrochemical performance  

作　　者：Wentao Zhang Zhongzheng Yao Changsheng Guo Huiqiang Ying He Zhu Si Lan 

机构地区：[1]Herbert Gleiter Institute of Nanoscience,School of Materials Science and Engineering,Nanjing University of Science and Technology,Nanjing,210094,China

出　　处：《Progress in Natural Science:Materials International》2024年第6期1327-1332,共6页自然科学进展·国际材料(英文版)

基　　金：financially supported by the National Key R&D Program of China(No.2021YFB3802800);the National Natural Science Foundation of China(Grant Nos.52222104,12261160364,22275089)

摘　　要：Amorphous alloys,i.e.,metallic glasses,combine high strength,hardness,excellent wear and corrosion resistance,and unique thermoplasticity due to their short-range ordered but long-range disordered glassy structures.However,critical size constraints limit their applications in advanced fields such as electrocatalysis,sensing,and complex devices.Here we report a novel lattice metamaterial fabricated by conformally depositing NiNbSn amorphous alloy coatings onto three-dimensional(3D)-printed polymer scaffolds with a cubic micro-nano lattice template.The cubic lattice design enables efficient stress transfer and uniform strain energy distribution,minimizing stress concentration.Meanwhile,the NiNbSn coating,featuring amorphous and nanocrystalline components,further enhances the structure through size hardening.The resulting hybrid polymer/alloy lattice shows excellent mechanical properties and an exceptional energy absorption capacity.Furthermore,coating the hybrid lattice with a NiMoPB glassy film results in a 3D nano-micro electrode for glucose detection,achieving a sensitivity of 13 times higher than that of the castcounterpart.Our strategy opens a new path to fabricating hybrid polymer/MGs micro-nano lattice structures with excellent mechanical and electrochemical performance,broadening the potential applications of metamaterials.

关 键 词：complex deviceshere polymer scaffolds wi nickel based alloys advanced fields amorphous alloys 

分 类 号：TG139.6[一般工业技术—材料科学与工程] TB34[金属学及工艺—合金]