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MgB2 多結晶バルク体の力学特性

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Title: MgB2 多結晶バルク体の力学特性
Other Titles: Mechanical Properties of Polycrystalline MgB2 Bulk
Authors: 大橋, 徹也1 Browse this author
波多, 聰2 Browse this author
池田, 賢一3 Browse this author →KAKEN DB
中島, 英治4 Browse this author
山本, 明保5 Browse this author
下山, 淳一6 Browse this author
堀井, 滋7 Browse this author
岸尾, 光二8 Browse this author
Authors(alt): Ohashi, Tetsuya1
Hata, Satoshi2
Ikeda, Ken-ichi3
Nakashima, Hideharu4
Yamamoto, Akiyasu5
Shimoyama, Jun-ichi6
Horii, Shigeru7
Kishio, Kohji8
Keywords: MgB2 bulk
SiC
C10H8
mechanical properties
microstructure
Issue Date: Aug-2008
Publisher: 低温工学・超電導学会
Journal Title: 低温工学
Journal Title(alt): Journal of the Cryogenic Society of Japan
Volume: 43
Issue: 8
Start Page: 342
End Page: 348
Publisher DOI: 10.2221/jcsj.43.342
Abstract: Mechanical properties of superconducting MgB2 materials are important for their practical uses. This paper reports relationships between mechanical properties (Vickers hardness and fracture toughness) and the microstructure in MgB2 bulk materials. MgB2 bulk specimens were prepared by a Premix-PICT (powder in closed tube)-diffusion method. It was found that Vickers hardness and fracture toughness were improved up to about 1.5 times by co-doping with SiC and C10H8. It is interpreted that (i) the improvement of Vickers hardness by the co-doping is mainly due to reducing the MgB2 grain size, and (ii) the improvement of fracture toughness by the co-doping is mainly due to decreasing the amount of amorphous phases.
Type: article
URI: http://hdl.handle.net/2115/75355
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 池田 賢一

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