Ductile amorphous boron nitride microribbons
Mengya Zhu, Jingzhuo Zhou, ZeZhou He, Yang Zhang, Hao Wu, Juzheng Chen, YinBo Zhu, Yuan Hou, HengAn Wu, Yang Lü
Abstract
uniaxial tensile measurements, we demonstrated that a-BN microribbons also display a surprising flaw-tolerance behaviour. Combining high-resolution atomic characterization with molecular dynamics simulations, we reveal that the large tensile plasticity of a-BN originates from the topological deformation induced multiple energy-dissipation mechanisms including unfolding and reorientation of local curly h-BN layers and their interlayer debonding, slippage as well as the intralayer tearing. Our findings provide new insights to develop ductile amorphous covalent-bonded materials for emerging applications.
Topics & Concepts
Boron nitrideMaterials scienceElongationDuctility (Earth science)BoronAmorphous solidUltimate tensile strengthComposite materialFracture (geology)MetallurgyCrystallographyCreepChemistryOrganic chemistryGraphene research and applicationsDiamond and Carbon-based Materials ResearchBoron and Carbon Nanomaterials Research