Open AccessA NEW WAY OF MAKING BUCKY ONION BY THERMAL DECOMPOSITION OF SiC NANOMETER POWDERS UNDER HIGH-TEMPERATURE AND VACUUM
Author(s) -
Xiaogang Yang,
Xiaobin Zhang,
Ze Zhang,
Ding Zi-Shang,
Zhou Guo-zhi
Publication year - 1998
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.47.1052
Subject(s) - materials science , nanometre , graphite , transmission electron microscopy , thermal decomposition , carbon fibers , planar , decomposition , electron microscope , composite material , chemical engineering , fullerene , nanotechnology , composite number , optics , chemistry , computer graphics (images) , organic chemistry , engineering , computer science , physics
Bucky onions have been produced by decomposing SiC nanometer powders under high- temperature and vacuum. Transmission electron microscope and high resolution electron microscope observations show that when SiC particles decompose completely, they transform into quasi-spherical hollow carbon particles and onion-like particles composed of concentric graphitic shells. When SiC particles decompose incompletely, they become compound particles, which are composed of β-SiC in particles and of quasi-concentric graphitic shells on surface of particles. The results suggest that the traditional idea that planar graphite is the most stable form of pure carbon would then have to be seriously discussed.