Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1673826 | Thin Solid Films | 2008 | 4 Pages |
Abstract
Three-dimensional (3D) double-helix carbon microcoils (CMCs) were synthesized by the catalytic pyrolysis of methane using Ni catalyst in various hot-wire CVD processes. The most effective process is: using preheating method, in which methane was preheated at 1500 °C in a upper reaction tube by a hot wire, and chemical vapor deposition of carbon then occurred at 700–750 °C in a lower reaction tube, where CMCs were synthesized. The growth morphologies and microstructure were examined and compared with the conventional CMCs grown by acetylene catalytic pyrolysis.
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Authors
Xiuqin Chen, M. Hasegawa, Shaoming Yang, Y. Nitta, T. Katsuno, S. Motojima,