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Radio‐Frequency Atmospheric‐Pressure Plasma Synthesis of Ultrafine ZrC Powders
Author(s) -
Bai Liuyang,
Zhang Haibao,
Jin Huacheng,
Yuan Fangli,
Huang Shulan,
Li Jinlin
Publication year - 2012
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/j.1744-7402.2012.02816.x
Subject(s) - materials science , atmospheric pressure , atmospheric pressure plasma , plasma , analytical chemistry (journal) , diffraction , particle size , ultrafine particle , chemical engineering , nuclear chemistry , nanotechnology , chromatography , optics , meteorology , chemistry , physics , quantum mechanics , engineering
A radio‐frequency atmospheric‐pressure plasma process has been applied to the synthesis of ultrafine ZrC powders using ZrCl 4 and CH 4 as precursors. Both thermodynamic analysis and experiments were conducted and the as‐prepared samples were characterized by X ‐ray diffraction, electron microscopy, and laser scattering. Results showed that ZrC powders with particle size <100 nm and surface area of 36.56 M 2 /g could be obtained. The addition of excess H 2 contributed to the increase in conversion rate. The conversion rate was about 65% when the carrier gas ratio ( H 2 / CH 4 ) was set at 4.0 and added axially through the injection probe.