Abstract
Amorphous SiBCNAl powders have been prepared by mechanical alloying (MA) technique using crystalline silicon (Si), hexagonal boron nitride (h-BN), graphite (C) and aluminum (Al) as starting materials. Microstructural characterization was carried out by X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM) and selected area diffraction (SAD). The results showed that the MA SiBCNAl powders were completely amorphous and no nanocrystalline structure had been detected. 29Si and 27Al solid-state nuclear magnetic resonance (NMR) spectra have provided evidence that Si and C atoms are intimately mixed at atomic levels and aluminium is present as mixed AlN 4, AlN 5/AlO 4 and AlN 6 units. Structural characterization by X-ray photoelectron spectroscopy (XPS) has shown the coexistence of chemical bonds formed by reactions of element of Si, B, C, N and Al. The thermal stability of SiBCNAl powders has been analyzed by thermogravimetry in argon.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
