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Multiwalled Carbon Nanotube Monoliths prepared by Spark Plasma Sintering (SPS) and their Mechanical Properties

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タイトル: Multiwalled Carbon Nanotube Monoliths prepared by Spark Plasma Sintering (SPS) and their Mechanical Properties
著者: Uo, Motohiro 著作を一覧する
Hasegawa, Tomoka 著作を一覧する
Akasaka, Tsukasa 著作を一覧する
Tanaka, Isao 著作を一覧する
Munekane, Fuminori 著作を一覧する
Omori, Mamoru 著作を一覧する
Kimura, Hisamichi 著作を一覧する
Nakatomi, Reiko 著作を一覧する
Soga, Kohei 著作を一覧する
Kogo, Yasuo 著作を一覧する
Watari, Fumio 著作を一覧する
キーワード: Carbon nanotube
spark plasma sintering
elastic modulus
hardness
発行日: 2009年
出版者: IOS Press
誌名: Bio-Medical Materials and Engineering
巻: 19
号: 1
開始ページ: 11
終了ページ: 17
出版社 DOI: 10.3233/BME-2009-0558
抄録: Three types of multiwalled carbon nanotube (MWCNT) monoliths without any binders were obtained by spark plasma sintering (SPS) treatment at 2000℃ under 80MPa sintering pressure. Three MWCNTs with different diameters: thin (20~30nm∅, CNT Co., Ltd., Korea), thick (100nm∅, Nano Carbon Technologies Co., Ltd., Japan) and spherical thin (20~30nm∅, granulated diameter=1~3μm, Shimizu Corporation, Japan)) were employed for SPS. SEM observation confirmed that these materials maintained the nanosized tube microstructure of raw CNT powder after SPS treatment. The densest monolith was prepared with the spherical MWCNTs. The mechanical properties of this material were estimated by the dynamic hardness test. The elastic modulus of the monolith did not depend on the difference of MWCNTs, but the hardness of spherical MWCNTs was higher than that of thick MWCNTs. The high density and hardness of the spherical MWCNTs were caused by the high packing density during the SPS process because of its spherical granulation. Thus, the spherical MWCNTs were most useful for the MWCNT monolith preparation with the SPS process and its application as a bone substitute material and a bone tissue engineering scaffold material was suggested.
資料タイプ: article (author version)
URI: http://hdl.handle.net/2115/38771
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 宇尾 基弘

 

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