303 生体用炭素繊維強化セラミックス複合材料の開発とその超塑性(関東支部茨城講演会)

概要

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A purpose of this study is a development of high performance bio-ceramics composite materials which have excellent mechanical properties and high fracture toughness equal to characteristics of a human dense bone. For the purpose, a hydroxyapatite (HAp) having excellent bio-compatibility and organism activity is reinforced by carbon fibers (CF) having bio-adaptability and good strength properties. The mechanical properties and the microstructures of the carbon fiber reinforced bio-ceramics composite materials (CF/HAp) are evaluated. The bending strength and the fracture toughness were nearly equal to those of the human dense bone. And in order to solve the difficulty of the processing, the strain-rate-jump bending test at high temperatures was performed. The coefficient of strain rate sensitivity (m value) was 0.26. The superplasticity was insufficient, however, the plastic deformation was large. The CF/HAp can be formed by plastic processings at high temperatures. As a result, the CF/HAp was considered to be effective on the utilization as a high performance biomaterial.
社団法人日本機械学会の論文
2005-09-08