Boron nitride nanotubes as nanocrucibles for morphology and phase transformations in encapsulated nanowires of the Mg-O system
Boron nitride (BN) nanotubes were filled with nanowires made of Mg-containing compounds: a metallic Mg-based material; a MgO-based phase; and a thermally and chemically unstable oxygen-rich MgO{sub 2}-based phase. Crystallography of the tubes and their fillings was studied using high-resolution transmission electron microscopy, electron energy loss spectroscopy and energy dispersive X-ray analysis. These compounds displayed markedly different behavior inside BN nanotube channels during in situ TEM electron-irradiation-induced and thermal heating. The interplay between phases, their morphology and phase transformations were observed under heating. Thus the applicability of chemically and thermally stable BN nanotubes as one-dimensional nanocrucibles for novel nanoscale metallurgy/chemistry in the practically important Mg-O system has been thoroughly documented. This opens up a pathway for BN nanotube-channel-confined reactions in other inorganic systems.
- OSTI ID:
- 20634713
- Journal Information:
- Acta Materialia, Vol. 52, Issue 11; Other Information: DOI: 10.1016/j.actamat.2004.03.025; PII: S1359645404001740; Copyright (c) 2004 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 1359-6454
- Country of Publication:
- United States
- Language:
- English
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