@article{26b8442718eb4a98bdc0cd9b804c7aa4,
title = "Exceptionally strong boron nitride nanotube aluminum composite interfaces",
abstract = "We report the direct strength property measurements along boron nitride nanotube (BNNT) aluminum (Al) composite interface using in situ scanning electron microscopy single-nanotube pullout techniques. The nanomechanical measurements reveal that the BNNT-Al interface possesses an average interfacial shear strength of ∼46 MPa and a maximum shear load of ∼340 nN, and is over 60% stronger than the comparable carbon nanotube (CNT) -Al interface. This strong interface enables significant loading of the nanotube during pull-out from the metal matrix with a generated maximum tensile stress close to its intrinsic strength limit. Density functional theory (DFT) calculations reveal stronger interfacial physio- and chemisorption interactions on an oxidized Al interface with hexagonal boron nitride (hBN) as compared to graphene, which are in contrast to comparable binding properties of hBN and graphene with pure Al. The exceptional Al-BNNT strength properties can thus be attributed to a partially oxidized metal-nanotube binding interface, which has important implications for optimizing the local interfacial load transfer and bulk properties of BNNT-metal nanocomposites.",
keywords = "Boron nitride nanotube, Interfacial shear, Metal matrix composite, Oxidation, Single-nanotube pullout experiments",
author = "Yingchun Jiang and Ning Li and Zihan Liu and Chenglin Yi and Huimin Zhou and Cheol Park and Fay, {Catharine C.} and Jia Deng and Chew, {Huck Beng} and Changhong Ke",
note = "Funding Information: The authors acknowledge the support of the National Science Foundation, United States under grant nos. NSF-CMMI 2009134 , 2009684 , and 2006127 , and the United States Air Force Office of Scientific Research under Grant No. FA9550-15-1-0491 . The DFT calculations were performed using the computational time provided by the Blue Waters sustained-petascale computing project, which is supported by the Delta research computing project, which is supported by the National Science Foundation (award OCI 2005572), and the State of Illinois. Delta is a joint effort of the University of Illinois at Urbana-Champaign and its National Center for Supercomputing Applications. The use of the Advanced Cyberinfrastructure Coordination Ecosystem: Services & Support (ACCESS), through allocations TG-PHY220010, TG-MAT210010, and TG-MAT210031 is also gratefully acknowledged. Funding Information: The authors acknowledge the support of the National Science Foundation, United States under grant nos. NSF-CMMI 2009134, 2009684, and 2006127, and the United States Air Force Office of Scientific Research under Grant No. FA9550-15-1-0491. The DFT calculations were performed using the computational time provided by the Blue Waters sustained-petascale computing project, which is supported by the Delta research computing project, which is supported by the National Science Foundation (award OCI 2005572), and the State of Illinois. Delta is a joint effort of the University of Illinois at Urbana-Champaign and its National Center for Supercomputing Applications. The use of the Advanced Cyberinfrastructure Coordination Ecosystem: Services & Support (ACCESS), through allocations TG-PHY220010, TG-MAT210010, and TG-MAT210031 is also gratefully acknowledged. Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",
year = "2023",
month = mar,
doi = "10.1016/j.eml.2022.101952",
language = "English (US)",
volume = "59",
journal = "Extreme Mechanics Letters",
issn = "2352-4316",
publisher = "Elsevier Limited",
}