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Fabrication of Porous Hydroxyapatite Using Hydrothermal Hot Pressing and Post-Sintering

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In the present study, a hydrothermal hot pressing (HHP) method was used to fabricate porous hydroxyapatites with high strength. In particular, an interconnected matrix of hydroxyapatite was achieved by solution precipitation and the application of compressive stress during HHP. Hydroxyapatite samples post-sintered after this HHP treatment had a lower relative density and higher open porosity than those prepared by normal sintering. An examination of the pore characteristics suggested that the samples after HHP treatment and post-sintering had a high amount of open pores with a large and round morphology, whereas the samples prepared by normal sintering showed a denser microstructure, with a sharp-edged-pore morphology.
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Document Type: Research Article

Affiliations: 1: Kyoto Institute of Technology, Kyoto 606-8585, Japan 2: Tohoku University, Aramaki, Sendai 980-8579, Japan 3: Shiraishi Central Laboratory Co. Ltd., Amagasaki 660-0085, Japan

Publication date: May 1, 2005

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