Iron carbide films produced by laser deposition

被引:15
作者
Yamada, Y. [1 ]
Yoshida, H. [1 ]
Kouno, K. [1 ]
Kobayashi, Y. [2 ]
机构
[1] Tokyo Univ Sci, Dept Chem, Shinjuku Ku, Tokyo 1628601, Japan
[2] RIKEN, Nishina Ctr, Wako, Saitama 3510198, Japan
来源
INTERNATIONAL CONFERENCE ON THE APPLICATIONS OF THE MOSSBAUER EFFECT (ICAME 2009) | 2010年 / 217卷
关键词
CARBON NANOTUBES; MOSSBAUER; FE7C3; FE;
D O I
10.1088/1742-6596/217/1/012096
中图分类号
O59 [应用物理学];
学科分类号
摘要
Iron carbide films were produced by laser deposition of iron atoms onto aluminium substrates in an acetylene atmosphere. Gas-phase reaction of energetic Fe atoms with C2H2 yielded Fe/C particles as well as Fe and C atoms. The subsequent reaction on the Al substrate surface produced iron carbide films. The compositions of the films were measured using Mossbauer spectroscopy. The films produced in low-pressure C2H2 were mainly composed of Fe7C3 and Fe3C, while the films produced in high-pressure C2H2 were composed of paramagnetic amorphous Fe-C. When the temperature of the Al substrate was increased, formation of crystalline Fe7C3 and Fe3C was enhanced. The composition of iron carbide films was controlled both by the pressure of C2H2 and the temperature of the Al substrate. X-ray diffraction patterns and scanning electron micro spectroscopy was also applied to confirm the assignments.
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页数:4
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