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자료유형
학술저널
저자정보
Kim, Min-Sung (Department of Biomedical Engineering Engineering and Materials, School of Medicine, Soonchunhyang University) Park , Ih-Ho (Department of Biomedical Engineering Engineering and Materials, School of Medicine, Soonchunhyang University) Lee, Byong-Taek (Department of Biomedical Engineering Engineering and Materials, School of Medicine, Soonchunhyang University)
저널정보
한국재료학회 한국재료학회지 한국재료학회지 제19권 제12호
발행연도
2009.1
수록면
680 - 685 (6page)

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Using a polyurethane foam replica method, porous hydroxyapatite scaffolds (PHS) were fabricated using conventional and microwave sintering techniques. The microstructure and material properties of the PHS, such as pore size, grain size, relative density and compressive strength, were investigated at different sintering temperatures and holding times to determine the optimal sintering conditions. There were interconnected pores whose sizes ranged between about 300 ${\mu}m$ and 700 ${\mu}m$. At a conventional sintering temperature of 1100$^{\circ}C$, the scaffold had a porous microstructure, which became denser and saw the occurrence of grain growth when the temperature was increased up to 1300$^{\circ}C$. In the case of microwave sintering, even at low sintering temperature and short holding time the microstructure was much denser and had smaller grains. As the holding time of the microwave sintering was increased, higher densification was observed and also the relative density and compressive strength increased. The compressive strength values of PHS were 2.3MPa and 1.8MPa when conventional and microwave sintering was applied at 1300$^{\circ}C$, respectively.

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