Fabrication and Evaluation of High Performance 12Ce-ZrO_2/3Y-ZrO_2 Composites for an Implant(Properties(structural and functional)<Special Issue>Guest Editors Dedicated to Prof. Gunter Petzow: Modern Trends in Advanced Ceramics)

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12Ce-ZrO_2 based composites reinforced with the addition of 3Y-ZrO_2 as a second phase were fabricated by the pressureless sintering at 1400℃ and subsequently post-HIP treatment at 1350℃. These 12Ce-ZrO_2 based composites with 3Y-ZrO_2 possessed the high strength over 1000MPa and also maximum fracture toughness of 8MPa・m^<1/2>. Furthermore, the significant inhibition of phase transformation of tetragonal to monoclinic phase under an aqueous hydrothermal condition at 150℃ was obtained for these 12Ce-ZrO_2/3Y-ZrO_2 composites. Their microstructural observations and evaluation of some properties were carried out for these composites. Especially, their local structures of Ce-K, Y-K and Zr-K edges for these 12Ce-ZrO_2/3Y-ZrO_2 composites were examined by XAFS measurements.
社団法人日本セラミックス協会の論文
2006-11-01