TY - JOUR
T1 - Fabrication and compressive strength of macrochannelled tetragonal zirconia polycrystals with calcium phosphate coating layer
AU - Koh, Young Hag
AU - Kim, Hae Won
AU - Kim, Hyoun Ee
AU - Halloran, John W.
N1 - Funding Information:
This research was supported by a grant from the Center for Advanced Materials Processing (CAMP) of the 21st Century Frontier R&D Program funded by the Ministry of Science and Technology, Republic of Korea.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2003/9
Y1 - 2003/9
N2 - Macrochannelled tetragonal zirconia polycrystals (TZP) coated with a calcium phosphate layer were fabricated using a coextrusion process to produce strong and bioactive porous bioceramics. The initial feedrod, composed of three materials [TZP (shell), calcium phosphate (intermediate layer), and carbon black (core)], was coextruded through a 750-μm orifice at 120°C, producing a continuous and flexible filament. Each sheet, which was composed of a unidirectional array of filaments, was stacked and then warm-pressed at 140°C with 10 MPa. After binder burnout, the green billet was sintered between 1350 and 1600°C for 1 h in air, leaving uniform macrochannels clad on the inside with bioactive calcium phosphate on a strong TZP body. The compressive strength of the specimen was much higher than that of calcium phosphate with a similar structure.
AB - Macrochannelled tetragonal zirconia polycrystals (TZP) coated with a calcium phosphate layer were fabricated using a coextrusion process to produce strong and bioactive porous bioceramics. The initial feedrod, composed of three materials [TZP (shell), calcium phosphate (intermediate layer), and carbon black (core)], was coextruded through a 750-μm orifice at 120°C, producing a continuous and flexible filament. Each sheet, which was composed of a unidirectional array of filaments, was stacked and then warm-pressed at 140°C with 10 MPa. After binder burnout, the green billet was sintered between 1350 and 1600°C for 1 h in air, leaving uniform macrochannels clad on the inside with bioactive calcium phosphate on a strong TZP body. The compressive strength of the specimen was much higher than that of calcium phosphate with a similar structure.
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U2 - 10.1557/JMR.2003.0280
DO - 10.1557/JMR.2003.0280
M3 - Article
AN - SCOPUS:0141481871
SN - 0884-2914
VL - 18
SP - 2009
EP - 2012
JO - Journal of Materials Research
JF - Journal of Materials Research
IS - 9
ER -