| Co-Investigator(Kenkyū-buntansha) |
TOHJI Kazuyuki 東北大学, 大学院環境科学研究科, 教授 (10175474)
TAKAGI Toshiyuki 東北大学, 流体科学研究所, 教授 (20197065)
ONO Takahito 東北大学, 大学院工学研究科, 教授 (90282095)
FU Ning 千葉大学, 大学院工学研究科, 教授 (60250685)
OMORI Mamoru 東北大学, 大学院工学研究科, 技術補佐員 (30005954)
YAMAMOTO Go 東北大学, 大学院工学研究科, 助教 (30436159)
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| Budget Amount *help |
¥134,550,000 (Direct Cost: ¥103,500,000、Indirect Cost: ¥31,050,000)
Fiscal Year 2013: ¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2012: ¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
Fiscal Year 2011: ¥33,020,000 (Direct Cost: ¥25,400,000、Indirect Cost: ¥7,620,000)
Fiscal Year 2010: ¥28,990,000 (Direct Cost: ¥22,300,000、Indirect Cost: ¥6,690,000)
Fiscal Year 2009: ¥38,350,000 (Direct Cost: ¥29,500,000、Indirect Cost: ¥8,850,000)
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| Research Abstract |
Preparation and evaluation of multi-walled carbon nanotube (MWCNT) reinforced alumina composites were conducted with the objective of promoting practical applications of engineered ceramic composites. Uniform dispersion of MWCNTs in matrix precursors was achieved primarily by controlling the rigidity of the MWCNTs used and through their surface modifications. Furthermore, in view of the advantage for industrial applications, a pressureless sintering method was developed in contrast with the pressure-assisted techniques used in the previous studies. The achievements then enabled us to successfully produce homogeneous MWCNT/alumina composites with the highest strength and fracture toughness compared with the literature data. It was demonstrated that the MWCNT/alumina composites developed in this study had superior friction/wear properties, electric conductivity, and electric magnetic wave absorption characteristics, providing a useful foundation for their practical applications.
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