| Budget Amount *help |
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2014: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2013: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2012: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2011: ¥7,800,000 (Direct Cost: ¥6,000,000、Indirect Cost: ¥1,800,000)
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| Outline of Final Research Achievements |
In order to develop the long-operating life artificial joints, carbon nanotubes (CNTs) were combined with alumina ceramics as reinforcement. We found that to enhance the fracture toughness of the composites, it was necessary not only that thinner CNTs having a few defects were dispersed uniformly in the composites but also that the microstructures of the composites were finer. Also, it is known that alumina ceramics are originally bioinert materials. So we found that alumina ceramics, which were ground coarsely and then heated with conc. phosphoric acid, had possibility to show bioactivity. The bioactivity is required property to use the alumina ceramics as artificial bone. Furthermore, in order to apply CNTs as scaffolds to regenerate living bone, CNTs/glass foam composites were fabricated. The foam composites in which CNTs were dispersed relatively uniform in the walls of pores were obtained.
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