2001 Fiscal Year Final Research Report Summary
Mechanical Strength of Carbon Nanotubes
| Project/Area Number |
11640324
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
固体物性Ⅰ(光物性・半導体・誘電体)
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| Research Institution | Ishinomaki Senshu University |
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Principal Investigator |
NISHINA Yuichiro School of Science and Engineering, Ishinomaki Senshu University, Professor, 理工学部, 教授 (90005851)
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| Co-Investigator(Kenkyū-buntansha) |
KASUYA Atsuo Tohoku University, Center For Interdisciplenary Research, Professor, 学際研究センター, 教授 (10005986)
MAEDA Toshiteru School of Science and Engineering, Ishinomaki Senshu University, Associate Professor, 理工学部, 助教授 (80202307)
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| Project Period (FY) |
1999 – 2000
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| Keywords | carbon / nanotubes / quartz / quenching / ceramics / critical tension / mechanical property |
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| Research Abstract |
A new method has been developed for fabricating quartz-clad carbon nanotube bundles. The initial stage of making an original carbon fiber consists of hydrothermal purifying process developed by K. Tohji et al. This original sample is vacuum-sealed in a quartz tube, Then the carbon sample is heated up to about 1250 ℃ until the quartz becomes incandescent and so does the carbon and soften. At the moment, quartz tube is taken out in the air and the carbon is quenched and stretched until it solidifies. Then the fiber becomes a thin thread of about 100 nm in diameter.
Through a simple technique of loading test, we may find that the carbon nanotube bundles may stand the critical tension of 40 tonsW/mm^2 as estimated from the bundle diameter of 100 microns or so. Thus, this quartz-clad carbon fiber stands high temperature and acid environment because of the single crystalline character of nanotube.
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