J044083 金属粒子分散セラミック基複合材料における機能ハイブリッド化([J04408]知的材料・構造システム(8))

概要

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Functional hybridization of ceramic-based composites dispersed with metallic particles is discussed, in particular, crack-healing function. Nano-Ni/Al203 has excellent mechanical properties such as high mechanical strength and high fracture toughness. As well nano-Ni/Al203 has crack-healing function via thermal oxidation. Oxidation of nano-Ni particles with Al203 matrix leads to crack-filling of oxidation product, NiAl2O4, and reduces stress concentration at the crack tip. Hybridization between oxidation of Ni particles with Al203 matrix and outward diffusion of cations in polycrystalline Al203 causes the crack-healing function in nano-Ni/Al203.
一般社団法人日本機械学会の論文
2011-09-11