放電プラズマ焼結によるβ-リン酸三カルシウム透明体の作製

概要

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β-tricalcium phosphate (Ca_3(PO_4)_2,β-TCP) is known to be biocompatible and osteoconductive. In the present study, β-TCP ceramics were prepared by the spark plasma sintering (SPS) technique at temperatures ranging from 800 to 1000℃ at a pressure of 60 MPa for 10 min at a heating rate of 25℃/min. No phases other than β-TCP were detected in the samples sintered at 800, 900 and 1000℃ by x-ray diffractometry. The relative densities of the β-TCP ceramics sintered at 800, 900 and 1000℃ were 70, 95 and more than 99%, respectively. Transparent β-TCP ceramics were obtained at 1000℃ for 10 min. From the results obtained by scanning probe microscopy, the ceramics prepared at 800 and 900℃ were found to have a few pores. The transparent ceramics had an average grain size of 1.5μm and seemed to be pore-free.
社団法人日本セラミックス協会の論文
2004-08-01