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Synthesis and Morphology of Niobium Monocarbide Whiskers
Author(s) -
Li JianBao,
Xu GuiYing,
Sun Ellen Y.,
Huang Yong,
Becher Paul F.
Publication year - 1998
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.1151-2916.1998.tb02535.x
Subject(s) - whiskers , materials science , niobium , oxide , metallurgy , impurity , niobium carbide , mineralogy , chemical engineering , composite material , chemistry , organic chemistry , engineering
Niobium monocarbide (NbC) whiskers were successfully synthesized by heating mixtures of niobium oxide (Nb 2 O 5 ) powder and carbon black in an argon atmosphere to temperatures in excess of 1100°C. The whiskers were mainly cuboid or cycloid needles with a square‐pyramid‐shaped tip and were 0.1‐2.0 µm in width and 5‐100 µm in length. The particular shape of the whiskers and the very low impurity levels detected suggest that the NbC whiskers grew via a solid‐vapor growth process.