Insight into reactions and interface between boron nitride nanotube and aluminium
Data(s) |
14/11/2012
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Resumo |
Nature and mechanism of interfacial reactions between boron nitride nanotubes (BNNTs) and aluminum matrix at high temperature (650 °C) are studied using high-resolution transmission electron microscopy (HRTEM). This study analyzes the feasibility of the use of BNNTs as reinforcement in aluminum matrix composites for structural application, for which interface plays a critical role. Thermodynamic comparison of aluminum (Al)-BNNT with analogous Al-carbon nanotube (Al-CNT) system reveals lesser amount of reaction in the former. Experimental observation also reveals thin (~7 nm) reaction-product formation at Al-BNNT interface even after 120 min of exposure at 650 °C. The spatial distribution of the reaction-product species at the interface is governed by the competitive diffusion of N, Al, and B. Morphology of the reaction products are influenced by their orientation relationship with BNNT walls. A theoretical prediction on Al-BNNT interface in macroscale composite suggests the formation of strong bond between the matrix and reinforcement phase.<br /> |
Identificador | |
Idioma(s) |
eng |
Publicador |
Cambridge University Press |
Relação |
http://dro.deakin.edu.au/eserv/DU:30052720/lahiri-insightinto-2012.pdf http://dx.doi.org/10.1557/jmr.2012.294 |
Palavras-Chave | #boron nitride nanotube #aluminum #interface |
Tipo |
Journal Article |