Mechanical Property Measurement of Iron-filled Carbon Nanotube Turfs by Nanoindentation
Date Issued
2009
Date
2009
Author(s)
Chi, Po-Yu
Abstract
Carbon nanotubes arouse a lot of interests in the field of technology. Based on the atomic structure and its tiny size, amazing electromagnetic and mechanical properties have been predicted and proved. The magnetic behavior is enhanced by means of filling iron nanowire into the hollow center of nanotube, which is as grown iron-filled carbon nanotube turfs. Besides, mechanical property of iron filled carbon nano turfs is barely discussed in related research. In this study, we aims to synthesis iron-filled carbon nanotube turfs by chemical vapor deposition and then measure the mechanical property by nanoindentation. And also, relation between mechanical property and iron filling ratio is discussed in this research. he growth parameters, temperature of growth and concentration of additional carbon source, are controlled first to investigate the relation to height of iron filled carbon nanotube turfs. With the changes on height of carbon nanotube turfs, the iron filling ratio are also altered. The iron filling ratio and diameters of carbon nanotube is observed by transmission electron microscope and then mechanical property of each sample is measured by nanoindentation. he results showed increasing growth temperature and concentration of additional carbon source would raise up the height of iron filled carbon nanotube turfs. When providing additional carbon source, the height limit of iron filled carbon nanotube turfs could be break through. On the other hand, the results of nanoindentation exhibit dependent relation of between mechanical property and iron filling ratio. The mechanical property would have exponential growth by increasing iron filling ratio.
Subjects
Iron-filled Carbon nanotube turfs
iron filling ratio
Nanoindentation
Mechanical property
Type
thesis
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