Synthesis and TEM Studies of Al₂O₃-Filled BNC Tubules

Abstract

BNC tubules have been synthesized in a high isostatic pressure apparatus in Ar at 1650°C and 1.5 MPa. The synthesis of tubules was performed in BN-crucible in the presence of yttrium aluminum garnet. TEM studies were carried out using a JEM-2010 transmission electron microscope with EELS and EDS techniques, and a JSM-7600F scanning electron microscope. It is established that carbon content varies for different tubules in the sample and does not exceed 50%, and boron and nitrogen amounts in each tubule are approximately the same. It is shown that the tubules contain the Al₂O₃-filling with β-, ϵ- or γ-phase crystal lattice.

Keywords:

• TEM
• SEM
• alumina
• crystallographic orientation
• B-N-C nanotubes