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Synthesis of Nanocrystalline Boron Carbide via a Solvothermal Reduction of CCl 4 in the Presence of Amorphous Boron Powder
Author(s) -
Gu Yunle,
Chen Luyang,
Qian Yitai,
Zhang Wanqun,
Ma Jianhua
Publication year - 2005
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2004.00023.x
Subject(s) - nanocrystalline material , materials science , amorphous solid , raman spectroscopy , x ray photoelectron spectroscopy , boron , analytical chemistry (journal) , powder diffraction , boron carbide , transmission electron microscopy , nuclear chemistry , chemical engineering , crystallography , chemistry , nanotechnology , metallurgy , physics , engineering , organic chemistry , chromatography , optics
Nanocrystalline boron carbide (B 4 C) was synthesized via a solvothermal reduction of carbon tetrachloride using metallic lithium as reductant in the presence of amorphous boron powder at 600°C in an autoclave. The X‐ray diffraction pattern of the product powder was indexed to the hexagonal B 4 C phase, with lattice constants a =5.606 and c =12.089 Å. The sample was also characterized by Raman spectrum, X‐ray photoelectron spectroscopy and inductively coupled plasma atomic emission spectrometry. Transmission electron microscopy revealed that the B 4 C nanocrystallites were slightly agglomerated, with a particle size of approximately 15–40 nm in diameter.